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/**
* @file ModbusRtu.h
* @version 1.21
* @date 2016.02.21
* @author Samuel Marco i Armengol
* @contact sammarcoarmengol@gmail.com
* @contribution Helium6072
* @contribution gabrielsan
*
* @description
* Arduino library for communicating with Modbus devices
* over RS232/USB/485 via RTU protocol.
*
* Further information:
* http://modbus.org/
* http://modbus.org/docs/Modbus_over_serial_line_V1_02.pdf
*
* @license
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; version
* 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* @defgroup setup Modbus Object Instantiation/Initialization
* @defgroup loop Modbus Object Management
* @defgroup buffer Modbus Buffer Management
* @defgroup discrete Modbus Function Codes for Discrete Coils/Inputs
* @defgroup register Modbus Function Codes for Holding/Input Registers
*
*/
#ifndef MODBUS_RTU_H
#define MODBUS_RTU_H
#include <inttypes.h>
#include "Arduino.h"
/**
* @struct modbus_t
* @brief
* Master query structure:
* This includes all the necessary fields to make the Master generate a Modbus query.
* A Master may keep several of these structures and send them cyclically or
* use them according to program needs.
*/
typedef struct
{
uint8_t u8id; /*!< Slave address between 1 and 247. 0 means broadcast */
uint8_t u8fct; /*!< Function code: 1, 2, 3, 4, 5, 6, 15 or 16 */
uint16_t u16RegAdd; /*!< Address of the first register to access at slave/s */
uint16_t u16CoilsNo; /*!< Number of coils or registers to access */
uint16_t *au16reg; /*!< Pointer to memory image in master */
}
modbus_t;
enum
{
RESPONSE_SIZE = 6,
EXCEPTION_SIZE = 3,
CHECKSUM_SIZE = 2
};
/**
* @enum MESSAGE
* @brief
* Indexes to telegram frame positions
*/
enum MESSAGE
{
ID = 0, //!< ID field
FUNC, //!< Function code position
ADD_HI, //!< Address high byte
ADD_LO, //!< Address low byte
NB_HI, //!< Number of coils or registers high byte
NB_LO, //!< Number of coils or registers low byte
BYTE_CNT //!< byte counter
};
/**
* @enum MB_FC
* @brief
* Modbus function codes summary.
* These are the implement function codes either for Master or for Slave.
*
* @see also fctsupported
* @see also modbus_t
*/
enum MB_FC
{
MB_FC_NONE = 0, /*!< null operator */
MB_FC_READ_COILS = 1, /*!< FCT=1 -> read coils or digital outputs */
MB_FC_READ_DISCRETE_INPUT = 2, /*!< FCT=2 -> read digital inputs */
MB_FC_READ_REGISTERS = 3, /*!< FCT=3 -> read registers or analog outputs */
MB_FC_READ_INPUT_REGISTER = 4, /*!< FCT=4 -> read analog inputs */
MB_FC_WRITE_COIL = 5, /*!< FCT=5 -> write single coil or output */
MB_FC_WRITE_REGISTER = 6, /*!< FCT=6 -> write single register */
MB_FC_WRITE_MULTIPLE_COILS = 15, /*!< FCT=15 -> write multiple coils or outputs */
MB_FC_WRITE_MULTIPLE_REGISTERS = 16 /*!< FCT=16 -> write multiple registers */
};
enum COM_STATES
{
COM_IDLE = 0,
COM_WAITING = 1
};
enum ERR_LIST
{
ERR_NOT_MASTER = -1,
ERR_POLLING = -2,
ERR_BUFF_OVERFLOW = -3,
ERR_BAD_CRC = -4,
ERR_EXCEPTION = -5
};
enum
{
NO_REPLY = 255,
EXC_FUNC_CODE = 1,
EXC_ADDR_RANGE = 2,
EXC_REGS_QUANT = 3,
EXC_EXECUTE = 4
};
const unsigned char fctsupported[] =
{
MB_FC_READ_COILS,
MB_FC_READ_DISCRETE_INPUT,
MB_FC_READ_REGISTERS,
MB_FC_READ_INPUT_REGISTER,
MB_FC_WRITE_COIL,
MB_FC_WRITE_REGISTER,
MB_FC_WRITE_MULTIPLE_COILS,
MB_FC_WRITE_MULTIPLE_REGISTERS
};
#define T35 5
#define MAX_BUFFER 64 //!< maximum size for the communication buffer in bytes
/**
* @class Modbus
* @brief
* Arduino class library for communicating with Modbus devices over
* USB/RS232/485 (via RTU protocol).
*/
class Modbus
{
private:
Stream *port; //!< Pointer to Stream class object (Either HardwareSerial or SoftwareSerial)
uint8_t u8id; //!< 0=master, 1..247=slave number
uint8_t u8txenpin; //!< flow control pin: 0=USB or RS-232 mode, >1=RS-485 mode
uint8_t u8state;
uint8_t u8lastError;
uint8_t au8Buffer[MAX_BUFFER];
uint8_t u8BufferSize;
uint8_t u8lastRec;
uint16_t *au16regs;
uint16_t u16InCnt, u16OutCnt, u16errCnt;
uint16_t u16timeOut;
uint32_t u32time, u32timeOut, u32overTime;
uint8_t u8regsize;
void sendTxBuffer();
int8_t getRxBuffer();
uint16_t calcCRC(uint8_t u8length);
uint8_t validateAnswer();
uint8_t validateRequest();
void get_FC1();
void get_FC3();
int8_t process_FC1( uint16_t *regs, uint8_t u8size );
int8_t process_FC3( uint16_t *regs, uint8_t u8size );
int8_t process_FC5( uint16_t *regs, uint8_t u8size );
int8_t process_FC6( uint16_t *regs, uint8_t u8size );
int8_t process_FC15( uint16_t *regs, uint8_t u8size );
int8_t process_FC16( uint16_t *regs, uint8_t u8size );
void buildException( uint8_t u8exception ); // build exception message
public:
Modbus(uint8_t u8id, Stream& port, uint8_t u8txenpin =0);
void start();
void setTimeOut( uint16_t u16timeOut); //!<write communication watch-dog timer
uint16_t getTimeOut(); //!<get communication watch-dog timer value
boolean getTimeOutState(); //!<get communication watch-dog timer state
int8_t query( modbus_t telegram ); //!<only for master
int8_t poll(); //!<cyclic poll for master
int8_t poll( uint16_t *regs, uint8_t u8size ); //!<cyclic poll for slave
uint16_t getInCnt(); //!<number of incoming messages
uint16_t getOutCnt(); //!<number of outcoming messages
uint16_t getErrCnt(); //!<error counter
uint8_t getID(); //!<get slave ID between 1 and 247
uint8_t getState();
uint8_t getLastError(); //!<get last error message
void setID( uint8_t u8id ); //!<write new ID for the slave
void setTxendPinOverTime( uint32_t u32overTime );
void end(); //!<finish any communication and release serial communication port
//
// Deprecated functions
// Deprecated: Use constructor: "Modbus m(0,Serial,0)" instead.
Modbus(uint8_t u8id=0, uint8_t u8serno=0, uint8_t u8txenpin=0) __attribute__((deprecated));
// Deprecated: Use "start()" instead.
template<typename T_Stream>
void begin(T_Stream* port_, long u32speed_) __attribute__((deprecated));
// Deprecated: Use "start()" instead.
template<typename T_Stream>
void begin(T_Stream* port_, long u32speed_, uint8_t u8txenpin_) __attribute__((deprecated));
// Deprecated: Use "start()" instead.
void begin(long u32speed = 19200) __attribute__((deprecated));
};
#endif // MODBUS_RTU_H

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README.txt
libmodbus is a library that provides a Serial Modbus implementation for Arduino.
A primary goal was to enable industrial communication for the Arduino in order to link it to industrial devices such as HMIs, CNCs, PLCs, temperature regulators or speed drives.
now you can use software serial with the update from Helium6072!
LIBRARY CONTENTS
=================================================================
LICENSE.txt GNU Licence file
keywords.txt Arduino IDE colouring syntax
/documentation
Library documentation generated with Doxygen.
/examples
Sample sketches to implement miscellaneous settings:
/examples/advanced_slave Modbus slave node, which links Arduino pins to the Modbus port.
/examples/RS485_slave Modbus slave adapted to the RS485 port
/examples/simple_master Modbus master node with a single query
/examples/simple_slave Modbus slave node with a link array
/examples/software_serial_simple_master Modbus master node that works via software serial
INSTALLATION PROCEDURE
=================================================================
Refer to this documentation to Install this library:
http://arduino.cc/en/Guide/Libraries
Starting with version 1.0.5, you can install 3rd party libraries in the IDE.
Do not unzip the downloaded library, leave it as is.
In the Arduino IDE, navigate to Sketch > Import Library. At the top of the drop down list, select the option to "Add Library".
You will be prompted to select this zipped library.
Return to the Sketch > Import Library menu. You should now see the library at the bottom of the drop-down menu. It is ready to be used in your sketch.
The zip file will have been expanded in the libraries folder in your Arduino sketches directory.
NB : the library will be available to use in sketches, but examples for the library will not be exposed in the File > Examples until after the IDE has restarted.
KNOWN ISSUES
=================================================================
It is not compatible with ARDUINO LEONARDO and not tested under ARDUINO DUE and newer boards.
TODO List
=================================================================
Common to Master and Slave:
1) Implement other Serial settings: parity, stop bits, ...
2) End frame delay, also known as T35
3) Test it with several Arduino boards: UNO, Mega, etc..
4) Extend it to Leonardo
Master:
1) Function code 1 and 2 still not implemented
2) Function code 15 still not implement
3) Other codes under development
New features by Helium6072 29 July 2016
=================================================================
1) "port->flush();" changed into "while(port->read() >= 0);"
Since Serial.flush() (port->flush(); in ModbusRtu.h line 287, 337, & 827) no longer empties incoming buffer on 1.6 (Arduino.cc : flush() "Waits for the transmission of outgoing serial data to complete. Prior to Arduino 1.0, this instead removed any buffered incoming serial data.), use "while(port->read() >= 0);" instead.
2) software serial compatible
New constructor Modbus::Modbus(uint8_t u8id) and method void Modbus::begin(SoftwareSerial *sPort, long u32speed) that makes using software serial possible.
Check out sexample "software_serial_simple_master" and learn more!

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<div id="projectname">Modbus Master and Slave for Arduino
&#160;<span id="projectnumber">1.2</span>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structmodbus__t.html">modbus_t</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Master query structure: This includes all the necessary fields to make the Master generate a <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> query. A Master may keep several of these structures and send them cyclically or use them according to program needs. <a href="structmodbus__t.html#details">More...</a><br/></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_modbus.html">Modbus</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Arduino class library for communicating with <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> devices over USB/RS232/485 (via RTU protocol). <a href="class_modbus.html#details">More...</a><br/></td></tr>
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<tr class="memitem:ac5a7c6ee8dea0ccb09dfc611bd08a0ac"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="_modbus_rtu_8h.html#ac5a7c6ee8dea0ccb09dfc611bd08a0ac">T35</a>&#160;&#160;&#160;5</td></tr>
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<tr class="memitem:a1d5dab30b404fab91608086105afc78c"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="_modbus_rtu_8h.html#a1d5dab30b404fab91608086105afc78c">MAX_BUFFER</a>&#160;&#160;&#160;64</td></tr>
<tr class="memdesc:a1d5dab30b404fab91608086105afc78c"><td class="mdescLeft">&#160;</td><td class="mdescRight">maximum size for the communication buffer in bytes <a href="#a1d5dab30b404fab91608086105afc78c">More...</a><br/></td></tr>
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Enumerations</h2></td></tr>
<tr class="memitem:a06fc87d81c62e9abb8790b6e5713c55b"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom">{ <a class="el" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b">RESPONSE_SIZE</a> = 6,
<a class="el" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55ba4bf89c487b3f7e29d56eb3fe657d6c05">EXCEPTION_SIZE</a> = 3,
<a class="el" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55baefcc8f6d8d181aaef9d131a357b1a332">CHECKSUM_SIZE</a> = 2
}</td></tr>
<tr class="separator:a06fc87d81c62e9abb8790b6e5713c55b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa9996e8b4648c78acf6cde2401e230ba"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230ba">MESSAGE</a> { <br/>
&#160;&#160;<a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68">ID</a> = 0,
<a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af">FUNC</a>,
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<a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f">NB_LO</a>,
<a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baaf84036e1dd68a2e160c3394fc083e892">BYTE_CNT</a>
<br/>
}</td></tr>
<tr class="memdesc:aa9996e8b4648c78acf6cde2401e230ba"><td class="mdescLeft">&#160;</td><td class="mdescRight">Indexes to telegram frame positions. <a href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230ba">More...</a><br/></td></tr>
<tr class="separator:aa9996e8b4648c78acf6cde2401e230ba"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aff1341ea5077cc6097a0d7db89be4cf6"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6">MB_FC</a> { <br/>
&#160;&#160;<a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a513dc96919a5d5c75f129c1b5b2afea9">MB_FC_NONE</a> = 0,
<a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0">MB_FC_READ_COILS</a> = 1,
<a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e">MB_FC_READ_DISCRETE_INPUT</a> = 2,
<a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f">MB_FC_READ_REGISTERS</a> = 3,
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&#160;&#160;<a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07">MB_FC_READ_INPUT_REGISTER</a> = 4,
<a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7">MB_FC_WRITE_COIL</a> = 5,
<a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f">MB_FC_WRITE_REGISTER</a> = 6,
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&#160;&#160;<a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb">MB_FC_WRITE_MULTIPLE_REGISTERS</a> = 16
<br/>
}</td></tr>
<tr class="memdesc:aff1341ea5077cc6097a0d7db89be4cf6"><td class="mdescLeft">&#160;</td><td class="mdescRight"><a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> function codes summary. These are the implement function codes either for Master or for Slave. <a href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6">More...</a><br/></td></tr>
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<tr class="memitem:a4f165b5bd333856a84635b2594013982"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982">COM_STATES</a> { <a class="el" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20">COM_IDLE</a> = 0,
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}</td></tr>
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&#160;&#160;<a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a12a9ad0aaae512b253a9da9ea19f2b04">ERR_NOT_MASTER</a> = -1,
<a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a7d2c6c1b333f4b566c613e52b62ab901">ERR_POLLING</a> = -2,
<a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1aafd42890a0ce129e23977fc1aca4044b">ERR_BUFF_OVERFLOW</a> = -3,
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&#160;&#160;<a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1ab4be9b5f7e8905633a3c045157f1dd0a">ERR_EXCEPTION</a> = -5
<br/>
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<tr class="memitem:adf764cbdea00d65edcd07bb9953ad2b7"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom">{ <br/>
&#160;&#160;<a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae">NO_REPLY</a> = 255,
<a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2">EXC_FUNC_CODE</a> = 1,
<a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280">EXC_ADDR_RANGE</a> = 2,
<a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7a062e13fdfefabb1d620506a526be3920">EXC_REGS_QUANT</a> = 3,
<br/>
&#160;&#160;<a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7a00e93edc9146c12fd21490d1a0d15f89">EXC_EXECUTE</a> = 4
<br/>
}</td></tr>
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Variables</h2></td></tr>
<tr class="memitem:aede21762dc4aa80a14df8dd40ef105f0"><td class="memItemLeft" align="right" valign="top">const unsigned char&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="_modbus_rtu_8h.html#aede21762dc4aa80a14df8dd40ef105f0">fctsupported</a> []</td></tr>
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</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><dl class="section version"><dt>Version</dt><dd>1.2 </dd></dl>
<dl class="section date"><dt>Date</dt><dd>2014.09.09 </dd></dl>
<dl class="section author"><dt>Author</dt><dd>Samuel Marco i Armengol <a href="#" onclick="location.href='mai'+'lto:'+'sam'+'ma'+'rco'+'ar'+'men'+'go'+'l@g'+'ma'+'il.'+'co'+'m'; return false;">samma<span style="display: none;">.nosp@m.</span>rcoa<span style="display: none;">.nosp@m.</span>rmeng<span style="display: none;">.nosp@m.</span>ol@g<span style="display: none;">.nosp@m.</span>mail.<span style="display: none;">.nosp@m.</span>com</a> </dd></dl>
<p>Arduino library for communicating with <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> devices over RS232/USB/485 via RTU protocol.</p>
<p>Further information: <a href="http://modbus.org/">http://modbus.org/</a> <a href="http://modbus.org/docs/Modbus_over_serial_line_V1_02.pdf">http://modbus.org/docs/Modbus_over_serial_line_V1_02.pdf</a></p>
<p>This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; version 2.1 of the License.</p>
<p>This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.</p>
<p>You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA </p>
<p>Definition in file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>maximum size for the communication buffer in bytes </p>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00133">133</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<td class="memname">#define T35&#160;&#160;&#160;5</td>
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<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00132">132</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<h2 class="groupheader">Enumeration Type Documentation</h2>
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<td class="memname">anonymous enum</td>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b"></a>RESPONSE_SIZE</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a06fc87d81c62e9abb8790b6e5713c55ba4bf89c487b3f7e29d56eb3fe657d6c05"></a>EXCEPTION_SIZE</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a06fc87d81c62e9abb8790b6e5713c55baefcc8f6d8d181aaef9d131a357b1a332"></a>CHECKSUM_SIZE</em>&nbsp;</td><td class="fielddoc">
</td></tr>
</table>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00057">57</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
</div>
</div>
<a class="anchor" id="adf764cbdea00d65edcd07bb9953ad2b7"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">anonymous enum</td>
</tr>
</table>
</div><div class="memdoc">
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae"></a>NO_REPLY</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2"></a>EXC_FUNC_CODE</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280"></a>EXC_ADDR_RANGE</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="adf764cbdea00d65edcd07bb9953ad2b7a062e13fdfefabb1d620506a526be3920"></a>EXC_REGS_QUANT</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="adf764cbdea00d65edcd07bb9953ad2b7a00e93edc9146c12fd21490d1a0d15f89"></a>EXC_EXECUTE</em>&nbsp;</td><td class="fielddoc">
</td></tr>
</table>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00113">113</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<a class="anchor" id="a4f165b5bd333856a84635b2594013982"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982">COM_STATES</a></td>
</tr>
</table>
</div><div class="memdoc">
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20"></a>COM_IDLE</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a4f165b5bd333856a84635b2594013982ad70b4cc84cc2f21d8b46f73f186dae6b"></a>COM_WAITING</em>&nbsp;</td><td class="fielddoc">
</td></tr>
</table>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00099">99</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
</div>
</div>
<a class="anchor" id="a792f00821300f1c7c768db990db646c1"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1">ERR_LIST</a></td>
</tr>
</table>
</div><div class="memdoc">
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="a792f00821300f1c7c768db990db646c1a12a9ad0aaae512b253a9da9ea19f2b04"></a>ERR_NOT_MASTER</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a792f00821300f1c7c768db990db646c1a7d2c6c1b333f4b566c613e52b62ab901"></a>ERR_POLLING</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a792f00821300f1c7c768db990db646c1aafd42890a0ce129e23977fc1aca4044b"></a>ERR_BUFF_OVERFLOW</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a792f00821300f1c7c768db990db646c1a918477ee2e5e31f01b03a83f472b63b0"></a>ERR_BAD_CRC</em>&nbsp;</td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a792f00821300f1c7c768db990db646c1ab4be9b5f7e8905633a3c045157f1dd0a"></a>ERR_EXCEPTION</em>&nbsp;</td><td class="fielddoc">
</td></tr>
</table>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00105">105</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
</div>
</div>
<a class="anchor" id="aff1341ea5077cc6097a0d7db89be4cf6"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6">MB_FC</a></td>
</tr>
</table>
</div><div class="memdoc">
<p><a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> function codes summary. These are the implement function codes either for Master or for Slave. </p>
<dl class="section see"><dt>See Also</dt><dd>also <a class="el" href="_modbus_rtu_8h.html#aede21762dc4aa80a14df8dd40ef105f0">fctsupported</a> </dd>
<dd>
also <a class="el" href="structmodbus__t.html" title="Master query structure: This includes all the necessary fields to make the Master generate a Modbus q...">modbus_t</a> </dd></dl>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="aff1341ea5077cc6097a0d7db89be4cf6a513dc96919a5d5c75f129c1b5b2afea9"></a>MB_FC_NONE</em>&nbsp;</td><td class="fielddoc">
<p>null operator </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0"></a>MB_FC_READ_COILS</em>&nbsp;</td><td class="fielddoc">
<p>FCT=1 -&gt; read coils or digital outputs </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e"></a>MB_FC_READ_DISCRETE_INPUT</em>&nbsp;</td><td class="fielddoc">
<p>FCT=2 -&gt; read digital inputs </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f"></a>MB_FC_READ_REGISTERS</em>&nbsp;</td><td class="fielddoc">
<p>FCT=3 -&gt; read registers or analog outputs </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07"></a>MB_FC_READ_INPUT_REGISTER</em>&nbsp;</td><td class="fielddoc">
<p>FCT=4 -&gt; read analog inputs </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7"></a>MB_FC_WRITE_COIL</em>&nbsp;</td><td class="fielddoc">
<p>FCT=5 -&gt; write single coil or output </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f"></a>MB_FC_WRITE_REGISTER</em>&nbsp;</td><td class="fielddoc">
<p>FCT=6 -&gt; write single register </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304"></a>MB_FC_WRITE_MULTIPLE_COILS</em>&nbsp;</td><td class="fielddoc">
<p>FCT=15 -&gt; write multiple coils or outputs </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb"></a>MB_FC_WRITE_MULTIPLE_REGISTERS</em>&nbsp;</td><td class="fielddoc">
<p>FCT=16 -&gt; write multiple registers </p>
</td></tr>
</table>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00087">87</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
</div>
</div>
<a class="anchor" id="aa9996e8b4648c78acf6cde2401e230ba"></a>
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<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230ba">MESSAGE</a></td>
</tr>
</table>
</div><div class="memdoc">
<p>Indexes to telegram frame positions. </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68"></a>ID</em>&nbsp;</td><td class="fielddoc">
<p>ID field. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af"></a>FUNC</em>&nbsp;</td><td class="fielddoc">
<p>Function code position. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c"></a>ADD_HI</em>&nbsp;</td><td class="fielddoc">
<p>Address high byte. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c"></a>ADD_LO</em>&nbsp;</td><td class="fielddoc">
<p>Address low byte. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6"></a>NB_HI</em>&nbsp;</td><td class="fielddoc">
<p>Number of coils or registers high byte. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f"></a>NB_LO</em>&nbsp;</td><td class="fielddoc">
<p>Number of coils or registers low byte. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="aa9996e8b4648c78acf6cde2401e230baaf84036e1dd68a2e160c3394fc083e892"></a>BYTE_CNT</em>&nbsp;</td><td class="fielddoc">
<p>byte counter </p>
</td></tr>
</table>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00068">68</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
</div>
</div>
<h2 class="groupheader">Variable Documentation</h2>
<a class="anchor" id="aede21762dc4aa80a14df8dd40ef105f0"></a>
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<div class="memproto">
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<td class="memname">const unsigned char fctsupported[]</td>
</tr>
</table>
</div><div class="memdoc">
<b>Initial value:</b><div class="fragment"><div class="line">= { </div>
<div class="line"> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0">MB_FC_READ_COILS</a>,</div>
<div class="line"> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e">MB_FC_READ_DISCRETE_INPUT</a>,</div>
<div class="line"> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f">MB_FC_READ_REGISTERS</a>, </div>
<div class="line"> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07">MB_FC_READ_INPUT_REGISTER</a>,</div>
<div class="line"> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7">MB_FC_WRITE_COIL</a>,</div>
<div class="line"> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f">MB_FC_WRITE_REGISTER</a>, </div>
<div class="line"> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304">MB_FC_WRITE_MULTIPLE_COILS</a>,</div>
<div class="line"> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb">MB_FC_WRITE_MULTIPLE_REGISTERS</a></div>
<div class="line">}</div>
</div><!-- fragment -->
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00121">121</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<div id="projectname">Modbus Master and Slave for Arduino
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<div id="projectbrief">Arduino library for implementing a Modbus Master or Slave through Serial port</div>
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<a href="_modbus_rtu_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="code" href="structmodbus__t.html"> 48</a></span>&#160;<span class="keyword">typedef</span> <span class="keyword">struct </span>{</div>
<div class="line"><a name="l00049"></a><span class="lineno"><a class="code" href="structmodbus__t.html#af78ad11f93e63022a1c279de7206358c"> 49</a></span>&#160; uint8_t <a class="code" href="structmodbus__t.html#af78ad11f93e63022a1c279de7206358c">u8id</a>; </div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="code" href="structmodbus__t.html#a57d1630d4548e5d50d79e206a48b09bc"> 50</a></span>&#160; uint8_t <a class="code" href="structmodbus__t.html#a57d1630d4548e5d50d79e206a48b09bc">u8fct</a>; </div>
<div class="line"><a name="l00051"></a><span class="lineno"><a class="code" href="structmodbus__t.html#a224ead9ff72467696e94fba9cf06bd3c"> 51</a></span>&#160; uint16_t <a class="code" href="structmodbus__t.html#a224ead9ff72467696e94fba9cf06bd3c">u16RegAdd</a>; </div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43"> 52</a></span>&#160; uint16_t <a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a>; </div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="code" href="structmodbus__t.html#a36212dd6316cbffb8ea31b2a2f5ae1be"> 53</a></span>&#160; uint16_t *<a class="code" href="structmodbus__t.html#a36212dd6316cbffb8ea31b2a2f5ae1be">au16reg</a>; </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;} </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<a class="code" href="structmodbus__t.html" title="Master query structure: This includes all the necessary fields to make the Master generate a Modbus q...">modbus_t</a>;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="keyword">enum</span> { </div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b"> 58</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b">RESPONSE_SIZE</a> = 6, </div>
<div class="line"><a name="l00059"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55ba4bf89c487b3f7e29d56eb3fe657d6c05"> 59</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55ba4bf89c487b3f7e29d56eb3fe657d6c05">EXCEPTION_SIZE</a> = 3, </div>
<div class="line"><a name="l00060"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55baefcc8f6d8d181aaef9d131a357b1a332"> 60</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55baefcc8f6d8d181aaef9d131a357b1a332">CHECKSUM_SIZE</a> = 2</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;};</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;</div>
<div class="line"><a name="l00068"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230ba"> 68</a></span>&#160;<span class="keyword">enum</span> <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230ba" title="Indexes to telegram frame positions. ">MESSAGE</a> {</div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68"> 69</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68" title="ID field. ">ID</a> = 0, </div>
<div class="line"><a name="l00070"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af"> 70</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af" title="Function code position. ">FUNC</a>, </div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c"> 71</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a>, </div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c"> 72</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a>, </div>
<div class="line"><a name="l00073"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6"> 73</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a>, </div>
<div class="line"><a name="l00074"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f"> 74</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a>, </div>
<div class="line"><a name="l00075"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baaf84036e1dd68a2e160c3394fc083e892"> 75</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baaf84036e1dd68a2e160c3394fc083e892" title="byte counter ">BYTE_CNT</a> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;};</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6"> 87</a></span>&#160;<span class="keyword">enum</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6" title="Modbus function codes summary. These are the implement function codes either for Master or for Slave...">MB_FC</a> {</div>
<div class="line"><a name="l00088"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a513dc96919a5d5c75f129c1b5b2afea9"> 88</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a513dc96919a5d5c75f129c1b5b2afea9">MB_FC_NONE</a> = 0, </div>
<div class="line"><a name="l00089"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0"> 89</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0">MB_FC_READ_COILS</a> = 1, </div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e"> 90</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e">MB_FC_READ_DISCRETE_INPUT</a> = 2, </div>
<div class="line"><a name="l00091"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f"> 91</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f">MB_FC_READ_REGISTERS</a> = 3, </div>
<div class="line"><a name="l00092"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07"> 92</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07">MB_FC_READ_INPUT_REGISTER</a> = 4, </div>
<div class="line"><a name="l00093"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7"> 93</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7">MB_FC_WRITE_COIL</a> = 5, </div>
<div class="line"><a name="l00094"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f"> 94</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f">MB_FC_WRITE_REGISTER</a> = 6, </div>
<div class="line"><a name="l00095"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304"> 95</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304">MB_FC_WRITE_MULTIPLE_COILS</a> = 15, </div>
<div class="line"><a name="l00096"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb"> 96</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb">MB_FC_WRITE_MULTIPLE_REGISTERS</a> = 16 </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;};</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982"> 99</a></span>&#160;<span class="keyword">enum</span> <a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982">COM_STATES</a> {</div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20"> 100</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20">COM_IDLE</a> = 0,</div>
<div class="line"><a name="l00101"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982ad70b4cc84cc2f21d8b46f73f186dae6b"> 101</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982ad70b4cc84cc2f21d8b46f73f186dae6b">COM_WAITING</a> = 1</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;};</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;</div>
<div class="line"><a name="l00105"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1"> 105</a></span>&#160;<span class="keyword">enum</span> <a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1">ERR_LIST</a> {</div>
<div class="line"><a name="l00106"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a12a9ad0aaae512b253a9da9ea19f2b04"> 106</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a12a9ad0aaae512b253a9da9ea19f2b04">ERR_NOT_MASTER</a> = -1,</div>
<div class="line"><a name="l00107"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a7d2c6c1b333f4b566c613e52b62ab901"> 107</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a7d2c6c1b333f4b566c613e52b62ab901">ERR_POLLING</a> = -2,</div>
<div class="line"><a name="l00108"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1aafd42890a0ce129e23977fc1aca4044b"> 108</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1aafd42890a0ce129e23977fc1aca4044b">ERR_BUFF_OVERFLOW</a> = -3,</div>
<div class="line"><a name="l00109"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a918477ee2e5e31f01b03a83f472b63b0"> 109</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a918477ee2e5e31f01b03a83f472b63b0">ERR_BAD_CRC</a> = -4,</div>
<div class="line"><a name="l00110"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1ab4be9b5f7e8905633a3c045157f1dd0a"> 110</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1ab4be9b5f7e8905633a3c045157f1dd0a">ERR_EXCEPTION</a> = -5</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;};</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<span class="keyword">enum</span> { </div>
<div class="line"><a name="l00114"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae"> 114</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae">NO_REPLY</a> = 255, </div>
<div class="line"><a name="l00115"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2"> 115</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2">EXC_FUNC_CODE</a> = 1,</div>
<div class="line"><a name="l00116"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280"> 116</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280">EXC_ADDR_RANGE</a> = 2, </div>
<div class="line"><a name="l00117"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7a062e13fdfefabb1d620506a526be3920"> 117</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7a062e13fdfefabb1d620506a526be3920">EXC_REGS_QUANT</a> = 3, </div>
<div class="line"><a name="l00118"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7a00e93edc9146c12fd21490d1a0d15f89"> 118</a></span>&#160; <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7a00e93edc9146c12fd21490d1a0d15f89">EXC_EXECUTE</a> = 4 </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;};</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;</div>
<div class="line"><a name="l00121"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#aede21762dc4aa80a14df8dd40ef105f0"> 121</a></span>&#160;<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="_modbus_rtu_8h.html#aede21762dc4aa80a14df8dd40ef105f0">fctsupported</a>[] = { </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0">MB_FC_READ_COILS</a>,</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e">MB_FC_READ_DISCRETE_INPUT</a>,</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f">MB_FC_READ_REGISTERS</a>, </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07">MB_FC_READ_INPUT_REGISTER</a>,</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7">MB_FC_WRITE_COIL</a>,</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f">MB_FC_WRITE_REGISTER</a>, </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304">MB_FC_WRITE_MULTIPLE_COILS</a>,</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb">MB_FC_WRITE_MULTIPLE_REGISTERS</a></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;};</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;</div>
<div class="line"><a name="l00132"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#ac5a7c6ee8dea0ccb09dfc611bd08a0ac"> 132</a></span>&#160;<span class="preprocessor">#define T35 5</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"><a class="code" href="_modbus_rtu_8h.html#a1d5dab30b404fab91608086105afc78c"> 133</a></span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define MAX_BUFFER 64 </span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="code" href="class_modbus.html"> 141</a></span>&#160;<span class="keyword">class </span><a class="code" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; HardwareSerial *port; </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; uint8_t u8id; </div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; uint8_t u8serno; </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; uint8_t u8txenpin; </div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; uint8_t u8state;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; uint8_t u8lastError;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; uint8_t au8Buffer[<a class="code" href="_modbus_rtu_8h.html#a1d5dab30b404fab91608086105afc78c" title="maximum size for the communication buffer in bytes ">MAX_BUFFER</a>];</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; uint8_t u8BufferSize;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; uint8_t u8lastRec;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; uint16_t *au16regs;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; uint16_t u16InCnt, u16OutCnt, u16errCnt;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; uint16_t u16timeOut;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; uint32_t u32time, u32timeOut;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; uint8_t u8regsize;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keywordtype">void</span> init(uint8_t u8id, uint8_t u8serno, uint8_t u8txenpin);</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="keywordtype">void</span> sendTxBuffer(); </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; int8_t getRxBuffer(); </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; uint16_t calcCRC(uint8_t u8length);</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; uint8_t validateAnswer();</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; uint8_t validateRequest(); </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; <span class="keywordtype">void</span> get_FC1(); </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <span class="keywordtype">void</span> get_FC3(); </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; int8_t process_FC1( uint16_t *regs, uint8_t u8size ); </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; int8_t process_FC3( uint16_t *regs, uint8_t u8size ); </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; int8_t process_FC5( uint16_t *regs, uint8_t u8size ); </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; int8_t process_FC6( uint16_t *regs, uint8_t u8size ); </div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; int8_t process_FC15( uint16_t *regs, uint8_t u8size ); </div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; int8_t process_FC16( uint16_t *regs, uint8_t u8size ); </div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <span class="keywordtype">void</span> buildException( uint8_t u8exception ); <span class="comment">// build exception message</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; <a class="code" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4" title="Default Constructor for Master through Serial. ">Modbus</a>(); </div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <a class="code" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4" title="Default Constructor for Master through Serial. ">Modbus</a>(uint8_t u8id, uint8_t u8serno); </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <a class="code" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4" title="Default Constructor for Master through Serial. ">Modbus</a>(uint8_t u8id, uint8_t u8serno, uint8_t u8txenpin);</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <span class="keywordtype">void</span> <a class="code" href="class_modbus.html#a4f9673a3d113c49af69cb87b030ef099">begin</a>(<span class="keywordtype">long</span> u32speed);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; <span class="keywordtype">void</span> <a class="code" href="class_modbus.html#a4f9673a3d113c49af69cb87b030ef099">begin</a>();</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keywordtype">void</span> <a class="code" href="group__setup.html#gaf828190ebe24efb1b3b1957429f3872e" title="write communication watch-dog timer ">setTimeOut</a>( uint16_t u16timeout); </div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; uint16_t <a class="code" href="class_modbus.html#ac860024db3117a2ef907d0325b2fb7a1" title="get communication watch-dog timer value ">getTimeOut</a>(); </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keywordtype">boolean</span> <a class="code" href="group__loop.html#gaf6dd413191ed8a833022046873e0a063" title="get communication watch-dog timer state ">getTimeOutState</a>(); </div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; int8_t <a class="code" href="group__loop.html#ga19398cabed57b6d085d014af6c149f54" title="only for master ">query</a>( <a class="code" href="structmodbus__t.html" title="Master query structure: This includes all the necessary fields to make the Master generate a Modbus q...">modbus_t</a> telegram ); </div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; int8_t <a class="code" href="group__loop.html#ga53bde78490c1cd8e3c070a676bdcfb0d" title="cyclic poll for master ">poll</a>(); </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; int8_t <a class="code" href="group__loop.html#ga53bde78490c1cd8e3c070a676bdcfb0d" title="cyclic poll for master ">poll</a>( uint16_t *regs, uint8_t u8size ); </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; uint16_t <a class="code" href="group__buffer.html#ga4fa6ede8df85b7cc70b1282b9547378a" title="number of incoming messages ">getInCnt</a>(); </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; uint16_t <a class="code" href="group__buffer.html#ga6f831ecaf3678c27dafb663a28bf81f0" title="number of outcoming messages ">getOutCnt</a>(); </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; uint16_t <a class="code" href="group__buffer.html#ga6883c7f3ff12f084ed56d559d4e06ed0" title="error counter ">getErrCnt</a>(); </div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; uint8_t <a class="code" href="group__setup.html#ga6449894306ff8cc5d4caff09b1b0d1ce" title="get slave ID between 1 and 247 ">getID</a>(); </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; uint8_t <a class="code" href="group__buffer.html#ga2f39717d957a929af488c9120488fcdc">getState</a>();</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; uint8_t <a class="code" href="group__buffer.html#gace7f726db13adc8feeceab987b719531" title="get last error message ">getLastError</a>(); </div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; <span class="keywordtype">void</span> <a class="code" href="group__setup.html#ga9bd497e97ac1777d4f0d4171078d60e0" title="write new ID for the slave ">setID</a>( uint8_t u8id ); </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="keywordtype">void</span> <a class="code" href="class_modbus.html#a0d80101b650344c712a085c4bb005c4c" title="finish any communication and release serial communication port ">end</a>(); </div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;};</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;<span class="comment">/* _____PUBLIC FUNCTIONS_____________________________________________________ */</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160;</div>
<div class="line"><a name="l00204"></a><span class="lineno"><a class="code" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4"> 204</a></span>&#160;<a class="code" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4" title="Default Constructor for Master through Serial. ">Modbus::Modbus</a>() {</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; init(0, 0, 0);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160;}</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160;</div>
<div class="line"><a name="l00218"></a><span class="lineno"><a class="code" href="class_modbus.html#afbbf7c81565d8e1ea1cd5890a96e7507"> 218</a></span>&#160;<a class="code" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4" title="Default Constructor for Master through Serial. ">Modbus::Modbus</a>(uint8_t u8id, uint8_t u8serno) {</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; init(u8id, u8serno, 0);</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;}</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160;</div>
<div class="line"><a name="l00234"></a><span class="lineno"><a class="code" href="class_modbus.html#a5e23a7b669d0c2d5be1c0054c7c54dca"> 234</a></span>&#160;<a class="code" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4" title="Default Constructor for Master through Serial. ">Modbus::Modbus</a>(uint8_t u8id, uint8_t u8serno, uint8_t u8txenpin) {</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; init(u8id, u8serno, u8txenpin);</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160;}</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160;</div>
<div class="line"><a name="l00250"></a><span class="lineno"><a class="code" href="group__setup.html#ga475a4fa0fac491307b10c4529ad6d2a0"> 250</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_modbus.html#a4f9673a3d113c49af69cb87b030ef099">Modbus::begin</a>(<span class="keywordtype">long</span> u32speed) {</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160;</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; <span class="keywordflow">switch</span>( u8serno ) {</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160;<span class="preprocessor">#if defined(UBRR1H)</span></div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 1:</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; port = &amp;Serial1;</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160;<span class="preprocessor">#if defined(UBRR2H)</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 2:</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; port = &amp;Serial2;</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160;<span class="preprocessor">#if defined(UBRR3H)</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; port = &amp;Serial3;</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 0:</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; port = &amp;Serial;</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; }</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160;</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; <span class="comment">// port-&gt;begin(u32speed, u8config);</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; port-&gt;begin(u32speed);</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; <span class="keywordflow">if</span> (u8txenpin &gt; 1) { <span class="comment">// pin 0 &amp; pin 1 are reserved for RX/TX</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; <span class="comment">// return RS485 transceiver to transmit mode</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; pinMode(u8txenpin, OUTPUT);</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; digitalWrite(u8txenpin, LOW);</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; }</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160;</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; port-&gt;flush();</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; u8lastRec = u8BufferSize = 0;</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; u16InCnt = u16OutCnt = u16errCnt = 0;</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160;}</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160;</div>
<div class="line"><a name="l00299"></a><span class="lineno"><a class="code" href="class_modbus.html#a4f9673a3d113c49af69cb87b030ef099"> 299</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_modbus.html#a4f9673a3d113c49af69cb87b030ef099">Modbus::begin</a>() {</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160; <a class="code" href="class_modbus.html#a4f9673a3d113c49af69cb87b030ef099">begin</a>(19200);</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160;}</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160;</div>
<div class="line"><a name="l00310"></a><span class="lineno"><a class="code" href="group__setup.html#ga9bd497e97ac1777d4f0d4171078d60e0"> 310</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__setup.html#ga9bd497e97ac1777d4f0d4171078d60e0" title="write new ID for the slave ">Modbus::setID</a>( uint8_t u8id) {</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; <span class="keywordflow">if</span> (( u8id != 0) &amp;&amp; (u8id &lt;= 247)) {</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; this-&gt;u8id = u8id;</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; }</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160;}</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160;</div>
<div class="line"><a name="l00323"></a><span class="lineno"><a class="code" href="group__setup.html#ga6449894306ff8cc5d4caff09b1b0d1ce"> 323</a></span>&#160;uint8_t <a class="code" href="group__setup.html#ga6449894306ff8cc5d4caff09b1b0d1ce" title="get slave ID between 1 and 247 ">Modbus::getID</a>() {</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; <span class="keywordflow">return</span> this-&gt;u8id;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160;}</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160;</div>
<div class="line"><a name="l00338"></a><span class="lineno"><a class="code" href="group__setup.html#gaf828190ebe24efb1b3b1957429f3872e"> 338</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__setup.html#gaf828190ebe24efb1b3b1957429f3872e" title="write communication watch-dog timer ">Modbus::setTimeOut</a>( uint16_t u16timeOut) {</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160; this-&gt;u16timeOut = u16timeOut;</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160;}</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160;</div>
<div class="line"><a name="l00350"></a><span class="lineno"><a class="code" href="group__loop.html#gaf6dd413191ed8a833022046873e0a063"> 350</a></span>&#160;<span class="keywordtype">boolean</span> <a class="code" href="group__loop.html#gaf6dd413191ed8a833022046873e0a063" title="get communication watch-dog timer state ">Modbus::getTimeOutState</a>() {</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160; <span class="keywordflow">return</span> (millis() &gt; u32timeOut);</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160;}</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160;</div>
<div class="line"><a name="l00362"></a><span class="lineno"><a class="code" href="group__buffer.html#ga4fa6ede8df85b7cc70b1282b9547378a"> 362</a></span>&#160;uint16_t <a class="code" href="group__buffer.html#ga4fa6ede8df85b7cc70b1282b9547378a" title="number of incoming messages ">Modbus::getInCnt</a>() { </div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160; <span class="keywordflow">return</span> u16InCnt; </div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160;}</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160;</div>
<div class="line"><a name="l00374"></a><span class="lineno"><a class="code" href="group__buffer.html#ga6f831ecaf3678c27dafb663a28bf81f0"> 374</a></span>&#160;uint16_t <a class="code" href="group__buffer.html#ga6f831ecaf3678c27dafb663a28bf81f0" title="number of outcoming messages ">Modbus::getOutCnt</a>() { </div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160; <span class="keywordflow">return</span> u16OutCnt; </div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160;}</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160;</div>
<div class="line"><a name="l00386"></a><span class="lineno"><a class="code" href="group__buffer.html#ga6883c7f3ff12f084ed56d559d4e06ed0"> 386</a></span>&#160;uint16_t <a class="code" href="group__buffer.html#ga6883c7f3ff12f084ed56d559d4e06ed0" title="error counter ">Modbus::getErrCnt</a>() { </div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160; <span class="keywordflow">return</span> u16errCnt; </div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160;}</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160;</div>
<div class="line"><a name="l00396"></a><span class="lineno"><a class="code" href="group__buffer.html#ga2f39717d957a929af488c9120488fcdc"> 396</a></span>&#160;uint8_t <a class="code" href="group__buffer.html#ga2f39717d957a929af488c9120488fcdc">Modbus::getState</a>() {</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; <span class="keywordflow">return</span> u8state;</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160;}</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160;</div>
<div class="line"><a name="l00409"></a><span class="lineno"><a class="code" href="group__buffer.html#gace7f726db13adc8feeceab987b719531"> 409</a></span>&#160;uint8_t <a class="code" href="group__buffer.html#gace7f726db13adc8feeceab987b719531" title="get last error message ">Modbus::getLastError</a>() {</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; <span class="keywordflow">return</span> u8lastError;</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160;}</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160;</div>
<div class="line"><a name="l00425"></a><span class="lineno"><a class="code" href="group__loop.html#ga19398cabed57b6d085d014af6c149f54"> 425</a></span>&#160;int8_t <a class="code" href="group__loop.html#ga19398cabed57b6d085d014af6c149f54" title="only for master ">Modbus::query</a>( <a class="code" href="structmodbus__t.html" title="Master query structure: This includes all the necessary fields to make the Master generate a Modbus q...">modbus_t</a> telegram ) {</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; uint8_t u8regsno, u8bytesno;</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; <span class="keywordflow">if</span> (u8id!=0) <span class="keywordflow">return</span> -2;</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160; <span class="keywordflow">if</span> (u8state != <a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20">COM_IDLE</a>) <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160;</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; <span class="keywordflow">if</span> ((telegram.<a class="code" href="structmodbus__t.html#af78ad11f93e63022a1c279de7206358c">u8id</a>==0) || (telegram.<a class="code" href="structmodbus__t.html#af78ad11f93e63022a1c279de7206358c">u8id</a>&gt;247)) <span class="keywordflow">return</span> -3;</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160;</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160; au16regs = telegram.<a class="code" href="structmodbus__t.html#a36212dd6316cbffb8ea31b2a2f5ae1be">au16reg</a>;</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160;</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160; <span class="comment">// telegram header</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68" title="ID field. ">ID</a> ] = telegram.<a class="code" href="structmodbus__t.html#af78ad11f93e63022a1c279de7206358c">u8id</a>;</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af" title="Function code position. ">FUNC</a> ] = telegram.<a class="code" href="structmodbus__t.html#a57d1630d4548e5d50d79e206a48b09bc">u8fct</a>;</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ] = highByte(telegram.<a class="code" href="structmodbus__t.html#a224ead9ff72467696e94fba9cf06bd3c">u16RegAdd</a> );</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ] = lowByte( telegram.<a class="code" href="structmodbus__t.html#a224ead9ff72467696e94fba9cf06bd3c">u16RegAdd</a> );</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160;</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160; <span class="keywordflow">switch</span>( telegram.<a class="code" href="structmodbus__t.html#a57d1630d4548e5d50d79e206a48b09bc">u8fct</a> ) {</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0">MB_FC_READ_COILS</a>:</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e">MB_FC_READ_DISCRETE_INPUT</a>:</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f">MB_FC_READ_REGISTERS</a>:</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07">MB_FC_READ_INPUT_REGISTER</a>:</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ] = highByte(telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a> );</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ] = lowByte( telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a> );</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160; u8BufferSize = 6;</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7">MB_FC_WRITE_COIL</a>:</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ] = ((au16regs[0] &gt; 0) ? 0xff : 0);</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ] = 0;</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160; u8BufferSize = 6; </div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f">MB_FC_WRITE_REGISTER</a>:</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ] = highByte(au16regs[0]);</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ] = lowByte(au16regs[0]);</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160; u8BufferSize = 6; </div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304">MB_FC_WRITE_MULTIPLE_COILS</a>: <span class="comment">// TODO: implement &quot;sending coils&quot;</span></div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160; u8regsno = telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a> / 16;</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160; u8bytesno = u8regsno * 2;</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160; <span class="keywordflow">if</span> ((telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a> % 16) != 0) {</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>&#160; u8bytesno++;</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>&#160; u8regsno++;</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160; }</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160;</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ] = highByte(telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a> );</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ] = lowByte( telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a> );</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a>+1 ] = u8bytesno;</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>&#160; u8BufferSize = 7;</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>&#160;</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>&#160; u8regsno = u8bytesno = 0; <span class="comment">// now auxiliary registers</span></div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>&#160; <span class="keywordflow">for</span> (uint16_t i = 0; i &lt; telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a>; i++) {</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>&#160;</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>&#160;</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>&#160; }</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>&#160;</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb">MB_FC_WRITE_MULTIPLE_REGISTERS</a>:</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ] = highByte(telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a> );</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ] = lowByte( telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a> );</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a>+1 ] = (uint8_t) ( telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a> * 2 );</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>&#160; u8BufferSize = 7; </div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>&#160;</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>&#160; <span class="keywordflow">for</span> (uint16_t i=0; i&lt; telegram.<a class="code" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a>; i++) {</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>&#160; au8Buffer[ u8BufferSize ] = highByte( au16regs[ i ] );</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>&#160; u8BufferSize++;</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>&#160; au8Buffer[ u8BufferSize ] = lowByte( au16regs[ i ] );</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>&#160; u8BufferSize++;</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>&#160; }</div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>&#160; }</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>&#160;</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>&#160; sendTxBuffer();</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>&#160; u8state = <a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982ad70b4cc84cc2f21d8b46f73f186dae6b">COM_WAITING</a>;</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>&#160;}</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>&#160;</div>
<div class="line"><a name="l00513"></a><span class="lineno"><a class="code" href="group__loop.html#ga53bde78490c1cd8e3c070a676bdcfb0d"> 513</a></span>&#160;int8_t <a class="code" href="group__loop.html#ga53bde78490c1cd8e3c070a676bdcfb0d" title="cyclic poll for master ">Modbus::poll</a>() {</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>&#160; <span class="comment">// check if there is any incoming frame</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>&#160; uint8_t u8current = port-&gt;available(); </div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>&#160;</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>&#160; <span class="keywordflow">if</span> (millis() &gt; u32timeOut) {</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>&#160; u8state = <a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20">COM_IDLE</a>;</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>&#160; u8lastError = <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae">NO_REPLY</a>;</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>&#160; u16errCnt++;</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>&#160; }</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>&#160;</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>&#160; <span class="keywordflow">if</span> (u8current == 0) <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>&#160;</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>&#160; <span class="comment">// check T35 after frame end or still no frame end</span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>&#160; <span class="keywordflow">if</span> (u8current != u8lastRec) {</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>&#160; u8lastRec = u8current;</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>&#160; u32time = millis() + <a class="code" href="_modbus_rtu_8h.html#ac5a7c6ee8dea0ccb09dfc611bd08a0ac">T35</a>;</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>&#160; }</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>&#160; <span class="keywordflow">if</span> (millis() &lt; u32time) <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>&#160;</div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>&#160; <span class="comment">// transfer Serial buffer frame to auBuffer</span></div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>&#160; u8lastRec = 0;</div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>&#160; int8_t i8state = getRxBuffer();</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>&#160; <span class="keywordflow">if</span> (i8state &lt; 7) {</div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>&#160; u8state = <a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20">COM_IDLE</a>;</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>&#160; u16errCnt++;</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>&#160; <span class="keywordflow">return</span> i8state;</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>&#160; }</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>&#160;</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>&#160; <span class="comment">// validate message: id, CRC, FCT, exception</span></div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>&#160; uint8_t u8exception = validateAnswer(); </div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>&#160; <span class="keywordflow">if</span> (u8exception != 0) {</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>&#160; u8state = <a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20">COM_IDLE</a>;</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>&#160; <span class="keywordflow">return</span> u8exception;</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>&#160; }</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>&#160;</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>&#160; <span class="comment">// process answer</span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>&#160; <span class="keywordflow">switch</span>( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af" title="Function code position. ">FUNC</a> ] ) {</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0">MB_FC_READ_COILS</a>:</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e">MB_FC_READ_DISCRETE_INPUT</a>:</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>&#160; <span class="comment">// call get_FC1 to transfer the incoming message to au16regs buffer</span></div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>&#160; get_FC1( );</div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07">MB_FC_READ_INPUT_REGISTER</a>:</div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f">MB_FC_READ_REGISTERS</a> :</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>&#160; <span class="comment">// call get_FC3 to transfer the incoming message to au16regs buffer</span></div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>&#160; get_FC3( );</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7">MB_FC_WRITE_COIL</a>:</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f">MB_FC_WRITE_REGISTER</a> :</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304">MB_FC_WRITE_MULTIPLE_COILS</a>:</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb">MB_FC_WRITE_MULTIPLE_REGISTERS</a> :</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>&#160; <span class="comment">// nothing to do</span></div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>&#160; } </div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>&#160; u8state = <a class="code" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20">COM_IDLE</a>;</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>&#160; <span class="keywordflow">return</span> u8BufferSize;</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>&#160;}</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>&#160;</div>
<div class="line"><a name="l00588"></a><span class="lineno"><a class="code" href="group__loop.html#gab3ef20562fc8cee14fc85f7e276890b5"> 588</a></span>&#160;int8_t <a class="code" href="group__loop.html#ga53bde78490c1cd8e3c070a676bdcfb0d" title="cyclic poll for master ">Modbus::poll</a>( uint16_t *regs, uint8_t u8size ) {</div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>&#160;</div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>&#160; au16regs = regs;</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>&#160; u8regsize = u8size;</div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>&#160;</div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>&#160; <span class="comment">// check if there is any incoming frame</span></div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>&#160; uint8_t u8current = port-&gt;available(); </div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>&#160; <span class="keywordflow">if</span> (u8current == 0) <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>&#160;</div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>&#160; <span class="comment">// check T35 after frame end or still no frame end</span></div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>&#160; <span class="keywordflow">if</span> (u8current != u8lastRec) {</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>&#160; u8lastRec = u8current;</div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>&#160; u32time = millis() + <a class="code" href="_modbus_rtu_8h.html#ac5a7c6ee8dea0ccb09dfc611bd08a0ac">T35</a>;</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>&#160; }</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>&#160; <span class="keywordflow">if</span> (millis() &lt; u32time) <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>&#160;</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>&#160; u8lastRec = 0;</div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>&#160; int8_t i8state = getRxBuffer();</div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>&#160; u8lastError = i8state;</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>&#160; <span class="keywordflow">if</span> (i8state &lt; 7) <span class="keywordflow">return</span> i8state; </div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>&#160;</div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>&#160; <span class="comment">// check slave id</span></div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>&#160; <span class="keywordflow">if</span> (au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68" title="ID field. ">ID</a> ] != u8id) <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>&#160;</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>&#160; <span class="comment">// validate message: CRC, FCT, address and size</span></div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>&#160; uint8_t u8exception = validateRequest();</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>&#160; <span class="keywordflow">if</span> (u8exception &gt; 0) {</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>&#160; <span class="keywordflow">if</span> (u8exception != <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae">NO_REPLY</a>) {</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>&#160; buildException( u8exception );</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>&#160; sendTxBuffer(); </div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>&#160; }</div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>&#160; u8lastError = u8exception;</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>&#160; <span class="keywordflow">return</span> u8exception;</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>&#160; }</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>&#160;</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>&#160; u32timeOut = millis() + long(u16timeOut);</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>&#160; u8lastError = 0;</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>&#160; </div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>&#160; <span class="comment">// process message</span></div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>&#160; <span class="keywordflow">switch</span>( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af" title="Function code position. ">FUNC</a> ] ) {</div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0">MB_FC_READ_COILS</a>:</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e">MB_FC_READ_DISCRETE_INPUT</a>:</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>&#160; <span class="keywordflow">return</span> process_FC1( regs, u8size );</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07">MB_FC_READ_INPUT_REGISTER</a>:</div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f">MB_FC_READ_REGISTERS</a> :</div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>&#160; <span class="keywordflow">return</span> process_FC3( regs, u8size );</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7">MB_FC_WRITE_COIL</a>:</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>&#160; <span class="keywordflow">return</span> process_FC5( regs, u8size );</div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f">MB_FC_WRITE_REGISTER</a> :</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>&#160; <span class="keywordflow">return</span> process_FC6( regs, u8size );</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304">MB_FC_WRITE_MULTIPLE_COILS</a>:</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>&#160; <span class="keywordflow">return</span> process_FC15( regs, u8size );</div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb">MB_FC_WRITE_MULTIPLE_REGISTERS</a> :</div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>&#160; <span class="keywordflow">return</span> process_FC16( regs, u8size );</div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>&#160; }</div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>&#160; <span class="keywordflow">return</span> i8state;</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>&#160;}</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>&#160;</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>&#160;<span class="comment">/* _____PRIVATE FUNCTIONS_____________________________________________________ */</span></div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>&#160;</div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>&#160;<span class="keywordtype">void</span> Modbus::init(uint8_t u8id, uint8_t u8serno, uint8_t u8txenpin) {</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>&#160; this-&gt;u8id = u8id;</div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>&#160; this-&gt;u8serno = (u8serno &gt; 3) ? 0 : u8serno;</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>&#160; this-&gt;u8txenpin = u8txenpin;</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>&#160; this-&gt;u16timeOut = 1000;</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>&#160;}</div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>&#160;</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>&#160;int8_t Modbus::getRxBuffer() {</div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>&#160; <span class="keywordtype">boolean</span> bBuffOverflow = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>&#160;</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>&#160; <span class="keywordflow">if</span> (u8txenpin &gt; 1) digitalWrite( u8txenpin, LOW );</div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>&#160;</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>&#160; u8BufferSize = 0;</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>&#160; <span class="keywordflow">while</span> ( port-&gt;available() ) {</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>&#160; au8Buffer[ u8BufferSize ] = port-&gt;read();</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>&#160; u8BufferSize ++;</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>&#160;</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>&#160; <span class="keywordflow">if</span> (u8BufferSize &gt;= <a class="code" href="_modbus_rtu_8h.html#a1d5dab30b404fab91608086105afc78c" title="maximum size for the communication buffer in bytes ">MAX_BUFFER</a>) bBuffOverflow = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>&#160; }</div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>&#160; u16InCnt++;</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>&#160;</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>&#160; <span class="keywordflow">if</span> (bBuffOverflow) {</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>&#160; u16errCnt++;</div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>&#160; <span class="keywordflow">return</span> <a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1aafd42890a0ce129e23977fc1aca4044b">ERR_BUFF_OVERFLOW</a>;</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>&#160; }</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>&#160; <span class="keywordflow">return</span> u8BufferSize;</div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>&#160;}</div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>&#160;</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>&#160;<span class="keywordtype">void</span> Modbus::sendTxBuffer() {</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>&#160; uint8_t i = 0;</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>&#160;</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>&#160; <span class="comment">// append CRC to message</span></div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>&#160; uint16_t u16crc = calcCRC( u8BufferSize );</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>&#160; au8Buffer[ u8BufferSize ] = u16crc &gt;&gt; 8;</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>&#160; u8BufferSize++;</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>&#160; au8Buffer[ u8BufferSize ] = u16crc &amp; 0x00ff;</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>&#160; u8BufferSize++;</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>&#160;</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>&#160; <span class="comment">// set RS485 transceiver to transmit mode</span></div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>&#160; <span class="keywordflow">if</span> (u8txenpin &gt; 1) {</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>&#160; <span class="keywordflow">switch</span>( u8serno ) {</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>&#160;<span class="preprocessor">#if defined(UBRR1H)</span></div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 1:</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>&#160; UCSR1A=UCSR1A |(1 &lt;&lt; TXC1);</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>&#160;<span class="preprocessor">#if defined(UBRR2H)</span></div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 2:</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>&#160; UCSR2A=UCSR2A |(1 &lt;&lt; TXC2);</div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>&#160;<span class="preprocessor">#if defined(UBRR3H)</span></div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>&#160; UCSR3A=UCSR3A |(1 &lt;&lt; TXC3);</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 0:</div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>&#160; UCSR0A=UCSR0A |(1 &lt;&lt; TXC0);</div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>&#160; }</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>&#160; digitalWrite( u8txenpin, HIGH );</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>&#160; }</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>&#160;</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>&#160; <span class="comment">// transfer buffer to serial line</span></div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>&#160; port-&gt;write( au8Buffer, u8BufferSize );</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>&#160;</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>&#160; <span class="comment">// keep RS485 transceiver in transmit mode as long as sending</span></div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>&#160; <span class="keywordflow">if</span> (u8txenpin &gt; 1) {</div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>&#160; <span class="keywordflow">switch</span>( u8serno ) {</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>&#160;<span class="preprocessor">#if defined(UBRR1H)</span></div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 1:</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>&#160; <span class="keywordflow">while</span> (!(UCSR1A &amp; (1 &lt;&lt; TXC1)));</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>&#160;<span class="preprocessor">#if defined(UBRR2H)</span></div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 2:</div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>&#160; <span class="keywordflow">while</span> (!(UCSR2A &amp; (1 &lt;&lt; TXC2)));</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>&#160;<span class="preprocessor">#if defined(UBRR3H)</span></div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>&#160; <span class="keywordflow">while</span> (!(UCSR3A &amp; (1 &lt;&lt; TXC3)));</div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>&#160;<span class="preprocessor"></span> <span class="keywordflow">case</span> 0:</div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>&#160; <span class="keywordflow">while</span> (!(UCSR0A &amp; (1 &lt;&lt; TXC0)));</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>&#160; }</div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>&#160;</div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>&#160; <span class="comment">// return RS485 transceiver to receive mode</span></div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>&#160; digitalWrite( u8txenpin, LOW );</div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>&#160; }</div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>&#160; port-&gt;flush();</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>&#160; u8BufferSize = 0;</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>&#160;</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>&#160; <span class="comment">// set time-out for master</span></div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>&#160; u32timeOut = millis() + (<span class="keywordtype">unsigned</span> long) u16timeOut;</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>&#160;</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>&#160; <span class="comment">// increase message counter</span></div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>&#160; u16OutCnt++;</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>&#160;}</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>&#160;</div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>&#160;uint16_t Modbus::calcCRC(uint8_t u8length) {</div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> temp, temp2, flag;</div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>&#160; temp = 0xFFFF;</div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> i = 0; i &lt; u8length; i++) {</div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>&#160; temp = temp ^ au8Buffer[i];</div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> j = 1; j &lt;= 8; j++) {</div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>&#160; flag = temp &amp; 0x0001;</div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>&#160; temp &gt;&gt;=1;</div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>&#160; <span class="keywordflow">if</span> (flag)</div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>&#160; temp ^= 0xA001;</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>&#160; }</div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>&#160; }</div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>&#160; <span class="comment">// Reverse byte order. </span></div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>&#160; temp2 = temp &gt;&gt; 8;</div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>&#160; temp = (temp &lt;&lt; 8) | temp2;</div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>&#160; temp &amp;= 0xFFFF; </div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>&#160; <span class="comment">// the returned value is already swapped</span></div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>&#160; <span class="comment">// crcLo byte is first &amp; crcHi byte is last</span></div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>&#160; <span class="keywordflow">return</span> temp; </div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>&#160;}</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>&#160;</div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>&#160;uint8_t Modbus::validateRequest() {</div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>&#160; <span class="comment">// check message crc vs calculated crc</span></div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>&#160; uint16_t u16MsgCRC = </div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>&#160; ((au8Buffer[u8BufferSize - 2] &lt;&lt; 8) </div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>&#160; | au8Buffer[u8BufferSize - 1]); <span class="comment">// combine the crc Low &amp; High bytes</span></div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>&#160; <span class="keywordflow">if</span> ( calcCRC( u8BufferSize-2 ) != u16MsgCRC ) {</div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>&#160; u16errCnt ++;</div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>&#160; <span class="keywordflow">return</span> <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae">NO_REPLY</a>;</div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>&#160; }</div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>&#160;</div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>&#160; <span class="comment">// check fct code</span></div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>&#160; <span class="keywordtype">boolean</span> isSupported = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>&#160; <span class="keywordflow">for</span> (uint8_t i = 0; i&lt; <span class="keyword">sizeof</span>( <a class="code" href="_modbus_rtu_8h.html#aede21762dc4aa80a14df8dd40ef105f0">fctsupported</a> ); i++) {</div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="_modbus_rtu_8h.html#aede21762dc4aa80a14df8dd40ef105f0">fctsupported</a>[i] == au8Buffer[<a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af" title="Function code position. ">FUNC</a>]) {</div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>&#160; isSupported = 1;</div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>&#160; }</div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>&#160; }</div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>&#160; <span class="keywordflow">if</span> (!isSupported) {</div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>&#160; u16errCnt ++;</div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>&#160; <span class="keywordflow">return</span> <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2">EXC_FUNC_CODE</a>;</div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>&#160; }</div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>&#160;</div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>&#160; <span class="comment">// check start address &amp; nb range</span></div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>&#160; uint16_t u16regs = 0;</div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>&#160; uint8_t u8regs;</div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>&#160; <span class="keywordflow">switch</span> ( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af" title="Function code position. ">FUNC</a> ] ) {</div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0">MB_FC_READ_COILS</a>:</div>
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e">MB_FC_READ_DISCRETE_INPUT</a>:</div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304">MB_FC_WRITE_MULTIPLE_COILS</a>:</div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>&#160; u16regs = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ]) / 16;</div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>&#160; u16regs += word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ]) /16;</div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>&#160; u8regs = (uint8_t) u16regs;</div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>&#160; <span class="keywordflow">if</span> (u8regs &gt; u8regsize) <span class="keywordflow">return</span> <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280">EXC_ADDR_RANGE</a>;</div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7">MB_FC_WRITE_COIL</a>:</div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>&#160; u16regs = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ]) / 16;</div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>&#160; u8regs = (uint8_t) u16regs;</div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>&#160; <span class="keywordflow">if</span> (u8regs &gt; u8regsize) <span class="keywordflow">return</span> <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280">EXC_ADDR_RANGE</a>;</div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>&#160; <span class="keywordflow">break</span>; </div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f">MB_FC_WRITE_REGISTER</a> :</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>&#160; u16regs = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ]);</div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>&#160; u8regs = (uint8_t) u16regs;</div>
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>&#160; <span class="keywordflow">if</span> (u8regs &gt; u8regsize) <span class="keywordflow">return</span> <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280">EXC_ADDR_RANGE</a>;</div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f">MB_FC_READ_REGISTERS</a> :</div>
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07">MB_FC_READ_INPUT_REGISTER</a> :</div>
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>&#160; <span class="keywordflow">case</span> <a class="code" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb">MB_FC_WRITE_MULTIPLE_REGISTERS</a> :</div>
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>&#160; u16regs = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ]);</div>
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>&#160; u16regs += word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ]);</div>
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>&#160; u8regs = (uint8_t) u16regs;</div>
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>&#160; <span class="keywordflow">if</span> (u8regs &gt; u8regsize) <span class="keywordflow">return</span> <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280">EXC_ADDR_RANGE</a>; </div>
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>&#160; }</div>
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>&#160; <span class="keywordflow">return</span> 0; <span class="comment">// OK, no exception code thrown</span></div>
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>&#160;}</div>
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>&#160;</div>
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>&#160;uint8_t Modbus::validateAnswer() {</div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>&#160; <span class="comment">// check message crc vs calculated crc</span></div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>&#160; uint16_t u16MsgCRC = </div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>&#160; ((au8Buffer[u8BufferSize - 2] &lt;&lt; 8) </div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>&#160; | au8Buffer[u8BufferSize - 1]); <span class="comment">// combine the crc Low &amp; High bytes</span></div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>&#160; <span class="keywordflow">if</span> ( calcCRC( u8BufferSize-2 ) != u16MsgCRC ) {</div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>&#160; u16errCnt ++;</div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>&#160; <span class="keywordflow">return</span> <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae">NO_REPLY</a>;</div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>&#160; }</div>
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>&#160;</div>
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>&#160; <span class="comment">// check exception</span></div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>&#160; <span class="keywordflow">if</span> ((au8Buffer[ FUNC ] &amp; 0x80) != 0) {</div>
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>&#160; u16errCnt ++;</div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>&#160; <span class="keywordflow">return</span> <a class="code" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1ab4be9b5f7e8905633a3c045157f1dd0a">ERR_EXCEPTION</a>;</div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>&#160; }</div>
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>&#160;</div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>&#160; <span class="comment">// check fct code</span></div>
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>&#160; <span class="keywordtype">boolean</span> isSupported = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>&#160; <span class="keywordflow">for</span> (uint8_t i = 0; i&lt; <span class="keyword">sizeof</span>( <a class="code" href="_modbus_rtu_8h.html#aede21762dc4aa80a14df8dd40ef105f0">fctsupported</a> ); i++) {</div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="_modbus_rtu_8h.html#aede21762dc4aa80a14df8dd40ef105f0">fctsupported</a>[i] == au8Buffer[FUNC]) {</div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>&#160; isSupported = 1;</div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>&#160; }</div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>&#160; }</div>
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>&#160; <span class="keywordflow">if</span> (!isSupported) {</div>
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>&#160; u16errCnt ++;</div>
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>&#160; <span class="keywordflow">return</span> <a class="code" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2">EXC_FUNC_CODE</a>;</div>
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>&#160; }</div>
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>&#160;</div>
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>&#160; <span class="keywordflow">return</span> 0; <span class="comment">// OK, no exception code thrown</span></div>
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>&#160;}</div>
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>&#160;</div>
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>&#160;<span class="keywordtype">void</span> Modbus::buildException( uint8_t u8exception ) {</div>
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>&#160; uint8_t u8func = au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af" title="Function code position. ">FUNC</a> ]; <span class="comment">// get the original FUNC code</span></div>
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span>&#160;</div>
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68" title="ID field. ">ID</a> ] = u8id;</div>
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af" title="Function code position. ">FUNC</a> ] = u8func + 0x80;</div>
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>&#160; au8Buffer[ 2 ] = u8exception;</div>
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>&#160; u8BufferSize = <a class="code" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55ba4bf89c487b3f7e29d56eb3fe657d6c05">EXCEPTION_SIZE</a>;</div>
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>&#160;}</div>
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>&#160;</div>
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>&#160;<span class="keywordtype">void</span> Modbus::get_FC1() {</div>
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>&#160; uint8_t u8byte, i;</div>
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>&#160; u8byte = 0;</div>
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>&#160;</div>
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>&#160; <span class="comment">// for (i=0; i&lt; au8Buffer[ 2 ] /2; i++) {</span></div>
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>&#160; <span class="comment">// au16regs[ i ] = word( </span></div>
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>&#160; <span class="comment">// au8Buffer[ u8byte ],</span></div>
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>&#160; <span class="comment">// au8Buffer[ u8byte +1 ]);</span></div>
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>&#160; <span class="comment">// u8byte += 2;</span></div>
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>&#160; <span class="comment">// }</span></div>
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>&#160;}</div>
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>&#160;</div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>&#160;<span class="keywordtype">void</span> Modbus::get_FC3() {</div>
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span>&#160; uint8_t u8byte, i;</div>
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span>&#160; u8byte = 3;</div>
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>&#160;</div>
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>&#160; <span class="keywordflow">for</span> (i=0; i&lt; au8Buffer[ 2 ] /2; i++) {</div>
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>&#160; au16regs[ i ] = word( </div>
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span>&#160; au8Buffer[ u8byte ],</div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>&#160; au8Buffer[ u8byte +1 ]);</div>
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>&#160; u8byte += 2;</div>
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>&#160; }</div>
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>&#160;}</div>
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>&#160;</div>
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span>&#160;int8_t Modbus::process_FC1( uint16_t *regs, uint8_t u8size ) {</div>
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>&#160; uint8_t u8currentRegister, u8currentBit, u8bytesno, u8bitsno;</div>
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span>&#160; uint8_t u8CopyBufferSize;</div>
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>&#160; uint16_t u16currentCoil, u16coil;</div>
<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>&#160;</div>
<div class="line"><a name="l00979"></a><span class="lineno"> 979</span>&#160; <span class="comment">// get the first and last coil from the message</span></div>
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span>&#160; uint16_t u16StartCoil = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ] );</div>
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span>&#160; uint16_t u16Coilno = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ] );</div>
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span>&#160;</div>
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>&#160; <span class="comment">// put the number of bytes in the outcoming message</span></div>
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>&#160; u8bytesno = (uint8_t) (u16Coilno / 8);</div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>&#160; <span class="keywordflow">if</span> (u16Coilno % 8 != 0) u8bytesno ++;</div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ] = u8bytesno;</div>
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>&#160; u8BufferSize = <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a>;</div>
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span>&#160;</div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>&#160; <span class="comment">// read each coil from the register map and put its value inside the outcoming message</span></div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>&#160; u8bitsno = 0;</div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>&#160;</div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>&#160; <span class="keywordflow">for</span> (u16currentCoil = 0; u16currentCoil &lt; u16Coilno; u16currentCoil++) {</div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>&#160; u16coil = u16StartCoil + u16currentCoil;</div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>&#160; u8currentRegister = (uint8_t) (u16coil / 16);</div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>&#160; u8currentBit = (uint8_t) (u16coil % 16);</div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>&#160;</div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span>&#160; bitWrite(</div>
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>&#160; au8Buffer[ u8BufferSize ],</div>
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span>&#160; u8bitsno,</div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>&#160; bitRead( regs[ u8currentRegister ], u8currentBit ) );</div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>&#160; u8bitsno ++;</div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>&#160;</div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>&#160; <span class="keywordflow">if</span> (u8bitsno &gt; 7) {</div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>&#160; u8bitsno = 0;</div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>&#160; u8BufferSize++;</div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>&#160; }</div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>&#160; }</div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>&#160;</div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>&#160; <span class="comment">// send outcoming message</span></div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>&#160; <span class="keywordflow">if</span> (u16Coilno % 8 != 0) u8BufferSize ++;</div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>&#160; u8CopyBufferSize = u8BufferSize +2;</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>&#160; sendTxBuffer();</div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>&#160; <span class="keywordflow">return</span> u8CopyBufferSize;</div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>&#160;}</div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>&#160;</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>&#160;int8_t Modbus::process_FC3( uint16_t *regs, uint8_t u8size ) {</div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>&#160;</div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>&#160; uint8_t u8StartAdd = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ] );</div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>&#160; uint8_t u8regsno = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ] );</div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>&#160; uint8_t u8CopyBufferSize;</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>&#160; uint8_t i;</div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>&#160;</div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>&#160; au8Buffer[ 2 ] = u8regsno * 2;</div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>&#160; u8BufferSize = 3;</div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>&#160;</div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>&#160; <span class="keywordflow">for</span> (i = u8StartAdd; i &lt; u8StartAdd + u8regsno; i++) {</div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>&#160; au8Buffer[ u8BufferSize ] = highByte(regs[i]);</div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>&#160; u8BufferSize++;</div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>&#160; au8Buffer[ u8BufferSize ] = lowByte(regs[i]);</div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>&#160; u8BufferSize++;</div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>&#160; }</div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>&#160; u8CopyBufferSize = u8BufferSize +2;</div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>&#160; sendTxBuffer();</div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>&#160;</div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>&#160; <span class="keywordflow">return</span> u8CopyBufferSize;</div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>&#160;}</div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>&#160;</div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>&#160;int8_t Modbus::process_FC5( uint16_t *regs, uint8_t u8size ) {</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>&#160; uint8_t u8currentRegister, u8currentBit;</div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>&#160; uint8_t u8CopyBufferSize;</div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>&#160; uint16_t u16coil = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ] );</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>&#160;</div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>&#160; <span class="comment">// point to the register and its bit</span></div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>&#160; u8currentRegister = (uint8_t) (u16coil / 16);</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>&#160; u8currentBit = (uint8_t) (u16coil % 16);</div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>&#160;</div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>&#160; <span class="comment">// write to coil</span></div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>&#160; bitWrite(</div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>&#160; regs[ u8currentRegister ],</div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>&#160; u8currentBit,</div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ] == 0xff );</div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>&#160;</div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>&#160;</div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>&#160; <span class="comment">// send answer to master</span></div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>&#160; u8BufferSize = 6;</div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>&#160; u8CopyBufferSize = u8BufferSize +2;</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>&#160; sendTxBuffer();</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>&#160;</div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>&#160; <span class="keywordflow">return</span> u8CopyBufferSize;</div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>&#160;}</div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>&#160;</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>&#160;int8_t Modbus::process_FC6( uint16_t *regs, uint8_t u8size ) {</div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>&#160;</div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>&#160; uint8_t u8add = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ] );</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>&#160; uint8_t u8CopyBufferSize;</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>&#160; uint16_t u16val = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ] );</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>&#160;</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>&#160; regs[ u8add ] = u16val;</div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>&#160;</div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>&#160; <span class="comment">// keep the same header</span></div>
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>&#160; u8BufferSize = <a class="code" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b">RESPONSE_SIZE</a>;</div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>&#160;</div>
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>&#160; u8CopyBufferSize = u8BufferSize +2;</div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>&#160; sendTxBuffer();</div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>&#160;</div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>&#160; <span class="keywordflow">return</span> u8CopyBufferSize;</div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>&#160;}</div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>&#160;</div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>&#160;int8_t Modbus::process_FC15( uint16_t *regs, uint8_t u8size ) {</div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>&#160; uint8_t u8currentRegister, u8currentBit, u8frameByte, u8bitsno;</div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>&#160; uint8_t u8CopyBufferSize;</div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>&#160; uint16_t u16currentCoil, u16coil;</div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>&#160; <span class="keywordtype">boolean</span> bTemp;</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>&#160;</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>&#160; <span class="comment">// get the first and last coil from the message</span></div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>&#160; uint16_t u16StartCoil = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ] );</div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>&#160; uint16_t u16Coilno = word( au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ], au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ] );</div>
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>&#160;</div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>&#160;</div>
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>&#160; <span class="comment">// read each coil from the register map and put its value inside the outcoming message</span></div>
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>&#160; u8bitsno = 0;</div>
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>&#160; u8frameByte = 7;</div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>&#160; <span class="keywordflow">for</span> (u16currentCoil = 0; u16currentCoil &lt; u16Coilno; u16currentCoil++) {</div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>&#160;</div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>&#160; u16coil = u16StartCoil + u16currentCoil;</div>
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>&#160; u8currentRegister = (uint8_t) (u16coil / 16);</div>
<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>&#160; u8currentBit = (uint8_t) (u16coil % 16);</div>
<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>&#160;</div>
<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>&#160; bTemp = bitRead(</div>
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>&#160; au8Buffer[ u8frameByte ],</div>
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>&#160; u8bitsno );</div>
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>&#160;</div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>&#160; bitWrite(</div>
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>&#160; regs[ u8currentRegister ],</div>
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>&#160; u8currentBit,</div>
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>&#160; bTemp );</div>
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>&#160;</div>
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>&#160; u8bitsno ++;</div>
<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>&#160;</div>
<div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>&#160; <span class="keywordflow">if</span> (u8bitsno &gt; 7) {</div>
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>&#160; u8bitsno = 0;</div>
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>&#160; u8frameByte++;</div>
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>&#160; }</div>
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>&#160; }</div>
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>&#160;</div>
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>&#160; <span class="comment">// send outcoming message</span></div>
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>&#160; <span class="comment">// it&#39;s just a copy of the incomping frame until 6th byte</span></div>
<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>&#160; u8BufferSize = 6;</div>
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>&#160; u8CopyBufferSize = u8BufferSize +2;</div>
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>&#160; sendTxBuffer();</div>
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>&#160; <span class="keywordflow">return</span> u8CopyBufferSize;</div>
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>&#160;}</div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>&#160;</div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>&#160;int8_t Modbus::process_FC16( uint16_t *regs, uint8_t u8size ) {</div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>&#160; uint8_t u8func = au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af" title="Function code position. ">FUNC</a> ]; <span class="comment">// get the original FUNC code</span></div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>&#160; uint8_t u8StartAdd = au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c" title="Address high byte. ">ADD_HI</a> ] &lt;&lt; 8 | au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c" title="Address low byte. ">ADD_LO</a> ];</div>
<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>&#160; uint8_t u8regsno = au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ] &lt;&lt; 8 | au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ];</div>
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>&#160; uint8_t u8CopyBufferSize;</div>
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>&#160; uint8_t i;</div>
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>&#160; uint16_t temp;</div>
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>&#160;</div>
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>&#160; <span class="comment">// build header</span></div>
<div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6" title="Number of coils or registers high byte. ">NB_HI</a> ] = 0;</div>
<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>&#160; au8Buffer[ <a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f" title="Number of coils or registers low byte. ">NB_LO</a> ] = u8regsno;</div>
<div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>&#160; u8BufferSize = <a class="code" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b">RESPONSE_SIZE</a>;</div>
<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>&#160;</div>
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>&#160; <span class="comment">// write registers</span></div>
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; u8regsno; i++) {</div>
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>&#160; temp = word(</div>
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>&#160; au8Buffer[ (<a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baaf84036e1dd68a2e160c3394fc083e892" title="byte counter ">BYTE_CNT</a> + 1) + i * 2 ],</div>
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>&#160; au8Buffer[ (<a class="code" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baaf84036e1dd68a2e160c3394fc083e892" title="byte counter ">BYTE_CNT</a> + 2) + i * 2 ]);</div>
<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>&#160;</div>
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>&#160; regs[ u8StartAdd + i ] = temp;</div>
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>&#160; }</div>
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>&#160; u8CopyBufferSize = u8BufferSize +2;</div>
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>&#160; sendTxBuffer();</div>
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>&#160;</div>
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>&#160; <span class="keywordflow">return</span> u8CopyBufferSize;</div>
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>&#160;}</div>
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<div id="projectname">Modbus Master and Slave for Arduino
&#160;<span id="projectnumber">1.2</span>
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<div id="projectbrief">Arduino library for implementing a Modbus Master or Slave through Serial port</div>
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<div class="textblock">Here are the classes, structs, unions and interfaces with brief descriptions:</div><div class="directory">
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<tr id="row_0_" class="even"><td class="entry"><img src="ftv2node.png" alt="o" width="16" height="22" /><img src="ftv2cl.png" alt="C" width="24" height="22" /><a class="el" href="class_modbus.html" target="_self">Modbus</a></td><td class="desc">Arduino class library for communicating with <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> devices over USB/RS232/485 (via RTU protocol) </td></tr>
<tr id="row_1_"><td class="entry"><img src="ftv2lastnode.png" alt="\" width="16" height="22" /><img src="ftv2cl.png" alt="C" width="24" height="22" /><a class="el" href="structmodbus__t.html" target="_self">modbus_t</a></td><td class="desc">Master query structure: This includes all the necessary fields to make the Master generate a <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> query. A Master may keep several of these structures and send them cyclically or use them according to program needs </td></tr>
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<div id="projectname">Modbus Master and Slave for Arduino
&#160;<span id="projectnumber">1.2</span>
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<div id="projectbrief">Arduino library for implementing a Modbus Master or Slave through Serial port</div>
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<p>This is the complete list of members for <a class="el" href="class_modbus.html">Modbus</a>, including all inherited members.</p>
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<tr class="even"><td class="entry"><a class="el" href="group__setup.html#ga475a4fa0fac491307b10c4529ad6d2a0">begin</a>(long u32speed)</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr><td class="entry"><a class="el" href="class_modbus.html#a4f9673a3d113c49af69cb87b030ef099">begin</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr class="even"><td class="entry"><a class="el" href="class_modbus.html#a0d80101b650344c712a085c4bb005c4c">end</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr><td class="entry"><a class="el" href="group__buffer.html#ga6883c7f3ff12f084ed56d559d4e06ed0">getErrCnt</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr class="even"><td class="entry"><a class="el" href="group__setup.html#ga6449894306ff8cc5d4caff09b1b0d1ce">getID</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr><td class="entry"><a class="el" href="group__buffer.html#ga4fa6ede8df85b7cc70b1282b9547378a">getInCnt</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr class="even"><td class="entry"><a class="el" href="group__buffer.html#gace7f726db13adc8feeceab987b719531">getLastError</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr><td class="entry"><a class="el" href="group__buffer.html#ga6f831ecaf3678c27dafb663a28bf81f0">getOutCnt</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr class="even"><td class="entry"><a class="el" href="group__buffer.html#ga2f39717d957a929af488c9120488fcdc">getState</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr><td class="entry"><a class="el" href="class_modbus.html#ac860024db3117a2ef907d0325b2fb7a1">getTimeOut</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr class="even"><td class="entry"><a class="el" href="group__loop.html#gaf6dd413191ed8a833022046873e0a063">getTimeOutState</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr><td class="entry"><a class="el" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4">Modbus</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr class="even"><td class="entry"><a class="el" href="class_modbus.html#afbbf7c81565d8e1ea1cd5890a96e7507">Modbus</a>(uint8_t u8id, uint8_t u8serno)</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr><td class="entry"><a class="el" href="class_modbus.html#a5e23a7b669d0c2d5be1c0054c7c54dca">Modbus</a>(uint8_t u8id, uint8_t u8serno, uint8_t u8txenpin)</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr class="even"><td class="entry"><a class="el" href="group__loop.html#ga53bde78490c1cd8e3c070a676bdcfb0d">poll</a>()</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr><td class="entry"><a class="el" href="group__loop.html#gab3ef20562fc8cee14fc85f7e276890b5">poll</a>(uint16_t *regs, uint8_t u8size)</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr class="even"><td class="entry"><a class="el" href="group__loop.html#ga19398cabed57b6d085d014af6c149f54">query</a>(modbus_t telegram)</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr><td class="entry"><a class="el" href="group__setup.html#ga9bd497e97ac1777d4f0d4171078d60e0">setID</a>(uint8_t u8id)</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
<tr class="even"><td class="entry"><a class="el" href="group__setup.html#gaf828190ebe24efb1b3b1957429f3872e">setTimeOut</a>(uint16_t u16timeout)</td><td class="entry"><a class="el" href="class_modbus.html">Modbus</a></td><td class="entry"></td></tr>
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<div id="projectname">Modbus Master and Slave for Arduino
&#160;<span id="projectnumber">1.2</span>
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<div id="projectbrief">Arduino library for implementing a Modbus Master or Slave through Serial port</div>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<p>Arduino class library for communicating with <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> devices over USB/RS232/485 (via RTU protocol).
<a href="class_modbus.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:ga101809cdd4734537bab58dc315a840b4"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4">Modbus</a> ()</td></tr>
<tr class="memdesc:ga101809cdd4734537bab58dc315a840b4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default Constructor for Master through Serial. <a href="group__setup.html#ga101809cdd4734537bab58dc315a840b4">More...</a><br/></td></tr>
<tr class="separator:ga101809cdd4734537bab58dc315a840b4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afbbf7c81565d8e1ea1cd5890a96e7507"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_modbus.html#afbbf7c81565d8e1ea1cd5890a96e7507">Modbus</a> (uint8_t u8id, uint8_t u8serno)</td></tr>
<tr class="separator:afbbf7c81565d8e1ea1cd5890a96e7507"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5e23a7b669d0c2d5be1c0054c7c54dca"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_modbus.html#a5e23a7b669d0c2d5be1c0054c7c54dca">Modbus</a> (uint8_t u8id, uint8_t u8serno, uint8_t u8txenpin)</td></tr>
<tr class="separator:a5e23a7b669d0c2d5be1c0054c7c54dca"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga475a4fa0fac491307b10c4529ad6d2a0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__setup.html#ga475a4fa0fac491307b10c4529ad6d2a0">begin</a> (long u32speed)</td></tr>
<tr class="memdesc:ga475a4fa0fac491307b10c4529ad6d2a0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initialize class object. <a href="group__setup.html#ga475a4fa0fac491307b10c4529ad6d2a0">More...</a><br/></td></tr>
<tr class="separator:ga475a4fa0fac491307b10c4529ad6d2a0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4f9673a3d113c49af69cb87b030ef099"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_modbus.html#a4f9673a3d113c49af69cb87b030ef099">begin</a> ()</td></tr>
<tr class="separator:a4f9673a3d113c49af69cb87b030ef099"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaf828190ebe24efb1b3b1957429f3872e"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__setup.html#gaf828190ebe24efb1b3b1957429f3872e">setTimeOut</a> (uint16_t u16timeout)</td></tr>
<tr class="memdesc:gaf828190ebe24efb1b3b1957429f3872e"><td class="mdescLeft">&#160;</td><td class="mdescRight">write communication watch-dog timer <a href="group__setup.html#gaf828190ebe24efb1b3b1957429f3872e">More...</a><br/></td></tr>
<tr class="separator:gaf828190ebe24efb1b3b1957429f3872e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac860024db3117a2ef907d0325b2fb7a1"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_modbus.html#ac860024db3117a2ef907d0325b2fb7a1">getTimeOut</a> ()</td></tr>
<tr class="memdesc:ac860024db3117a2ef907d0325b2fb7a1"><td class="mdescLeft">&#160;</td><td class="mdescRight">get communication watch-dog timer value <a href="#ac860024db3117a2ef907d0325b2fb7a1">More...</a><br/></td></tr>
<tr class="separator:ac860024db3117a2ef907d0325b2fb7a1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaf6dd413191ed8a833022046873e0a063"><td class="memItemLeft" align="right" valign="top">boolean&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__loop.html#gaf6dd413191ed8a833022046873e0a063">getTimeOutState</a> ()</td></tr>
<tr class="memdesc:gaf6dd413191ed8a833022046873e0a063"><td class="mdescLeft">&#160;</td><td class="mdescRight">get communication watch-dog timer state <a href="group__loop.html#gaf6dd413191ed8a833022046873e0a063">More...</a><br/></td></tr>
<tr class="separator:gaf6dd413191ed8a833022046873e0a063"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga19398cabed57b6d085d014af6c149f54"><td class="memItemLeft" align="right" valign="top">int8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__loop.html#ga19398cabed57b6d085d014af6c149f54">query</a> (<a class="el" href="structmodbus__t.html">modbus_t</a> telegram)</td></tr>
<tr class="memdesc:ga19398cabed57b6d085d014af6c149f54"><td class="mdescLeft">&#160;</td><td class="mdescRight">only for master <a href="group__loop.html#ga19398cabed57b6d085d014af6c149f54">More...</a><br/></td></tr>
<tr class="separator:ga19398cabed57b6d085d014af6c149f54"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga53bde78490c1cd8e3c070a676bdcfb0d"><td class="memItemLeft" align="right" valign="top">int8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__loop.html#ga53bde78490c1cd8e3c070a676bdcfb0d">poll</a> ()</td></tr>
<tr class="memdesc:ga53bde78490c1cd8e3c070a676bdcfb0d"><td class="mdescLeft">&#160;</td><td class="mdescRight">cyclic poll for master <a href="group__loop.html#ga53bde78490c1cd8e3c070a676bdcfb0d">More...</a><br/></td></tr>
<tr class="separator:ga53bde78490c1cd8e3c070a676bdcfb0d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gab3ef20562fc8cee14fc85f7e276890b5"><td class="memItemLeft" align="right" valign="top">int8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__loop.html#gab3ef20562fc8cee14fc85f7e276890b5">poll</a> (uint16_t *regs, uint8_t u8size)</td></tr>
<tr class="memdesc:gab3ef20562fc8cee14fc85f7e276890b5"><td class="mdescLeft">&#160;</td><td class="mdescRight">cyclic poll for slave <a href="group__loop.html#gab3ef20562fc8cee14fc85f7e276890b5">More...</a><br/></td></tr>
<tr class="separator:gab3ef20562fc8cee14fc85f7e276890b5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga4fa6ede8df85b7cc70b1282b9547378a"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__buffer.html#ga4fa6ede8df85b7cc70b1282b9547378a">getInCnt</a> ()</td></tr>
<tr class="memdesc:ga4fa6ede8df85b7cc70b1282b9547378a"><td class="mdescLeft">&#160;</td><td class="mdescRight">number of incoming messages <a href="group__buffer.html#ga4fa6ede8df85b7cc70b1282b9547378a">More...</a><br/></td></tr>
<tr class="separator:ga4fa6ede8df85b7cc70b1282b9547378a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga6f831ecaf3678c27dafb663a28bf81f0"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__buffer.html#ga6f831ecaf3678c27dafb663a28bf81f0">getOutCnt</a> ()</td></tr>
<tr class="memdesc:ga6f831ecaf3678c27dafb663a28bf81f0"><td class="mdescLeft">&#160;</td><td class="mdescRight">number of outcoming messages <a href="group__buffer.html#ga6f831ecaf3678c27dafb663a28bf81f0">More...</a><br/></td></tr>
<tr class="separator:ga6f831ecaf3678c27dafb663a28bf81f0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga6883c7f3ff12f084ed56d559d4e06ed0"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__buffer.html#ga6883c7f3ff12f084ed56d559d4e06ed0">getErrCnt</a> ()</td></tr>
<tr class="memdesc:ga6883c7f3ff12f084ed56d559d4e06ed0"><td class="mdescLeft">&#160;</td><td class="mdescRight">error counter <a href="group__buffer.html#ga6883c7f3ff12f084ed56d559d4e06ed0">More...</a><br/></td></tr>
<tr class="separator:ga6883c7f3ff12f084ed56d559d4e06ed0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga6449894306ff8cc5d4caff09b1b0d1ce"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__setup.html#ga6449894306ff8cc5d4caff09b1b0d1ce">getID</a> ()</td></tr>
<tr class="memdesc:ga6449894306ff8cc5d4caff09b1b0d1ce"><td class="mdescLeft">&#160;</td><td class="mdescRight">get slave ID between 1 and 247 <a href="group__setup.html#ga6449894306ff8cc5d4caff09b1b0d1ce">More...</a><br/></td></tr>
<tr class="separator:ga6449894306ff8cc5d4caff09b1b0d1ce"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga2f39717d957a929af488c9120488fcdc"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__buffer.html#ga2f39717d957a929af488c9120488fcdc">getState</a> ()</td></tr>
<tr class="separator:ga2f39717d957a929af488c9120488fcdc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gace7f726db13adc8feeceab987b719531"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__buffer.html#gace7f726db13adc8feeceab987b719531">getLastError</a> ()</td></tr>
<tr class="memdesc:gace7f726db13adc8feeceab987b719531"><td class="mdescLeft">&#160;</td><td class="mdescRight">get last error message <a href="group__buffer.html#gace7f726db13adc8feeceab987b719531">More...</a><br/></td></tr>
<tr class="separator:gace7f726db13adc8feeceab987b719531"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga9bd497e97ac1777d4f0d4171078d60e0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__setup.html#ga9bd497e97ac1777d4f0d4171078d60e0">setID</a> (uint8_t u8id)</td></tr>
<tr class="memdesc:ga9bd497e97ac1777d4f0d4171078d60e0"><td class="mdescLeft">&#160;</td><td class="mdescRight">write new ID for the slave <a href="group__setup.html#ga9bd497e97ac1777d4f0d4171078d60e0">More...</a><br/></td></tr>
<tr class="separator:ga9bd497e97ac1777d4f0d4171078d60e0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0d80101b650344c712a085c4bb005c4c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_modbus.html#a0d80101b650344c712a085c4bb005c4c">end</a> ()</td></tr>
<tr class="memdesc:a0d80101b650344c712a085c4bb005c4c"><td class="mdescLeft">&#160;</td><td class="mdescRight">finish any communication and release serial communication port <a href="#a0d80101b650344c712a085c4bb005c4c">More...</a><br/></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Arduino class library for communicating with <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> devices over USB/RS232/485 (via RTU protocol). </p>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00141">141</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00218">218</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00234">234</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00299">299</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>finish any communication and release serial communication port </p>
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<p>get communication watch-dog timer value </p>
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: <a class="el" href="group__buffer.html#gace7f726db13adc8feeceab987b719531">Modbus</a>
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<li>getOutCnt()
: <a class="el" href="group__buffer.html#ga6f831ecaf3678c27dafb663a28bf81f0">Modbus</a>
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: <a class="el" href="group__buffer.html#ga2f39717d957a929af488c9120488fcdc">Modbus</a>
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: <a class="el" href="class_modbus.html#ac860024db3117a2ef907d0325b2fb7a1">Modbus</a>
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: <a class="el" href="group__loop.html#gaf6dd413191ed8a833022046873e0a063">Modbus</a>
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: <a class="el" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4">Modbus</a>
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: <a class="el" href="group__setup.html#gaf828190ebe24efb1b3b1957429f3872e">Modbus</a>
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: <a class="el" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">modbus_t</a>
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<li>u16RegAdd
: <a class="el" href="structmodbus__t.html#a224ead9ff72467696e94fba9cf06bd3c">modbus_t</a>
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<li>u8fct
: <a class="el" href="structmodbus__t.html#a57d1630d4548e5d50d79e206a48b09bc">modbus_t</a>
</li>
<li>u8id
: <a class="el" href="structmodbus__t.html#af78ad11f93e63022a1c279de7206358c">modbus_t</a>
</li>
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<div id="projectname">Modbus Master and Slave for Arduino
&#160;<span id="projectnumber">1.2</span>
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&#160;<ul>
<li>begin()
: <a class="el" href="group__setup.html#ga475a4fa0fac491307b10c4529ad6d2a0">Modbus</a>
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: <a class="el" href="group__setup.html#ga6449894306ff8cc5d4caff09b1b0d1ce">Modbus</a>
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: <a class="el" href="group__buffer.html#ga4fa6ede8df85b7cc70b1282b9547378a">Modbus</a>
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: <a class="el" href="group__buffer.html#gace7f726db13adc8feeceab987b719531">Modbus</a>
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: <a class="el" href="group__buffer.html#ga6f831ecaf3678c27dafb663a28bf81f0">Modbus</a>
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: <a class="el" href="group__buffer.html#ga2f39717d957a929af488c9120488fcdc">Modbus</a>
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: <a class="el" href="class_modbus.html#ac860024db3117a2ef907d0325b2fb7a1">Modbus</a>
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<li>getTimeOutState()
: <a class="el" href="group__loop.html#gaf6dd413191ed8a833022046873e0a063">Modbus</a>
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<li>Modbus()
: <a class="el" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4">Modbus</a>
</li>
<li>poll()
: <a class="el" href="group__loop.html#ga53bde78490c1cd8e3c070a676bdcfb0d">Modbus</a>
</li>
<li>query()
: <a class="el" href="group__loop.html#ga19398cabed57b6d085d014af6c149f54">Modbus</a>
</li>
<li>setID()
: <a class="el" href="group__setup.html#ga9bd497e97ac1777d4f0d4171078d60e0">Modbus</a>
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<li>setTimeOut()
: <a class="el" href="group__setup.html#gaf828190ebe24efb1b3b1957429f3872e">Modbus</a>
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<div id="projectname">Modbus Master and Slave for Arduino
&#160;<span id="projectnumber">1.2</span>
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&#160;<ul>
<li>au16reg
: <a class="el" href="structmodbus__t.html#a36212dd6316cbffb8ea31b2a2f5ae1be">modbus_t</a>
</li>
<li>u16CoilsNo
: <a class="el" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">modbus_t</a>
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: <a class="el" href="structmodbus__t.html#a224ead9ff72467696e94fba9cf06bd3c">modbus_t</a>
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<li>u8fct
: <a class="el" href="structmodbus__t.html#a57d1630d4548e5d50d79e206a48b09bc">modbus_t</a>
</li>
<li>u8id
: <a class="el" href="structmodbus__t.html#af78ad11f93e63022a1c279de7206358c">modbus_t</a>
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<div id="projectname">Modbus Master and Slave for Arduino
&#160;<span id="projectnumber">1.2</span>
</div>
<div id="projectbrief">Arduino library for implementing a Modbus Master or Slave through Serial port</div>
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<li><a href="globals_enum.html"><span>Enumerations</span></a></li>
<li><a href="globals_eval.html"><span>Enumerator</span></a></li>
<li><a href="globals_defs.html"><span>Macros</span></a></li>
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<div id="navrow4" class="tabs3">
<ul class="tablist">
<li><a href="#index_a"><span>a</span></a></li>
<li><a href="#index_b"><span>b</span></a></li>
<li><a href="#index_c"><span>c</span></a></li>
<li><a href="#index_e"><span>e</span></a></li>
<li><a href="#index_f"><span>f</span></a></li>
<li><a href="#index_i"><span>i</span></a></li>
<li><a href="#index_m"><span>m</span></a></li>
<li><a href="#index_n"><span>n</span></a></li>
<li><a href="#index_r"><span>r</span></a></li>
<li><a href="#index_t"><span>t</span></a></li>
</ul>
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</div><!-- top -->
<div class="contents">
<div class="textblock">Here is a list of all file members with links to the files they belong to:</div>
<h3><a class="anchor" id="index_a"></a>- a -</h3><ul>
<li>ADD_HI
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c">ModbusRtu.h</a>
</li>
<li>ADD_LO
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_b"></a>- b -</h3><ul>
<li>BYTE_CNT
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baaf84036e1dd68a2e160c3394fc083e892">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_c"></a>- c -</h3><ul>
<li>CHECKSUM_SIZE
: <a class="el" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55baefcc8f6d8d181aaef9d131a357b1a332">ModbusRtu.h</a>
</li>
<li>COM_IDLE
: <a class="el" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20">ModbusRtu.h</a>
</li>
<li>COM_STATES
: <a class="el" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982">ModbusRtu.h</a>
</li>
<li>COM_WAITING
: <a class="el" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982ad70b4cc84cc2f21d8b46f73f186dae6b">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_e"></a>- e -</h3><ul>
<li>ERR_BAD_CRC
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a918477ee2e5e31f01b03a83f472b63b0">ModbusRtu.h</a>
</li>
<li>ERR_BUFF_OVERFLOW
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1aafd42890a0ce129e23977fc1aca4044b">ModbusRtu.h</a>
</li>
<li>ERR_EXCEPTION
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1ab4be9b5f7e8905633a3c045157f1dd0a">ModbusRtu.h</a>
</li>
<li>ERR_LIST
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1">ModbusRtu.h</a>
</li>
<li>ERR_NOT_MASTER
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a12a9ad0aaae512b253a9da9ea19f2b04">ModbusRtu.h</a>
</li>
<li>ERR_POLLING
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a7d2c6c1b333f4b566c613e52b62ab901">ModbusRtu.h</a>
</li>
<li>EXC_ADDR_RANGE
: <a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280">ModbusRtu.h</a>
</li>
<li>EXC_EXECUTE
: <a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7a00e93edc9146c12fd21490d1a0d15f89">ModbusRtu.h</a>
</li>
<li>EXC_FUNC_CODE
: <a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2">ModbusRtu.h</a>
</li>
<li>EXC_REGS_QUANT
: <a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7a062e13fdfefabb1d620506a526be3920">ModbusRtu.h</a>
</li>
<li>EXCEPTION_SIZE
: <a class="el" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55ba4bf89c487b3f7e29d56eb3fe657d6c05">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_f"></a>- f -</h3><ul>
<li>fctsupported
: <a class="el" href="_modbus_rtu_8h.html#aede21762dc4aa80a14df8dd40ef105f0">ModbusRtu.h</a>
</li>
<li>FUNC
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_i"></a>- i -</h3><ul>
<li>ID
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_m"></a>- m -</h3><ul>
<li>MAX_BUFFER
: <a class="el" href="_modbus_rtu_8h.html#a1d5dab30b404fab91608086105afc78c">ModbusRtu.h</a>
</li>
<li>MB_FC
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6">ModbusRtu.h</a>
</li>
<li>MB_FC_NONE
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a513dc96919a5d5c75f129c1b5b2afea9">ModbusRtu.h</a>
</li>
<li>MB_FC_READ_COILS
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0">ModbusRtu.h</a>
</li>
<li>MB_FC_READ_DISCRETE_INPUT
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e">ModbusRtu.h</a>
</li>
<li>MB_FC_READ_INPUT_REGISTER
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07">ModbusRtu.h</a>
</li>
<li>MB_FC_READ_REGISTERS
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f">ModbusRtu.h</a>
</li>
<li>MB_FC_WRITE_COIL
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7">ModbusRtu.h</a>
</li>
<li>MB_FC_WRITE_MULTIPLE_COILS
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304">ModbusRtu.h</a>
</li>
<li>MB_FC_WRITE_MULTIPLE_REGISTERS
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb">ModbusRtu.h</a>
</li>
<li>MB_FC_WRITE_REGISTER
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f">ModbusRtu.h</a>
</li>
<li>MESSAGE
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230ba">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_n"></a>- n -</h3><ul>
<li>NB_HI
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6">ModbusRtu.h</a>
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<li>NB_LO
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f">ModbusRtu.h</a>
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<li>NO_REPLY
: <a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae">ModbusRtu.h</a>
</li>
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<h3><a class="anchor" id="index_r"></a>- r -</h3><ul>
<li>RESPONSE_SIZE
: <a class="el" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b">ModbusRtu.h</a>
</li>
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<h3><a class="anchor" id="index_t"></a>- t -</h3><ul>
<li>T35
: <a class="el" href="_modbus_rtu_8h.html#ac5a7c6ee8dea0ccb09dfc611bd08a0ac">ModbusRtu.h</a>
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<div id="projectname">Modbus Master and Slave for Arduino
&#160;<span id="projectnumber">1.2</span>
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<div id="projectbrief">Arduino library for implementing a Modbus Master or Slave through Serial port</div>
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<div class="contents">
&#160;<ul>
<li>MAX_BUFFER
: <a class="el" href="_modbus_rtu_8h.html#a1d5dab30b404fab91608086105afc78c">ModbusRtu.h</a>
</li>
<li>T35
: <a class="el" href="_modbus_rtu_8h.html#ac5a7c6ee8dea0ccb09dfc611bd08a0ac">ModbusRtu.h</a>
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<div id="projectname">Modbus Master and Slave for Arduino
&#160;<span id="projectnumber">1.2</span>
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<div id="projectbrief">Arduino library for implementing a Modbus Master or Slave through Serial port</div>
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<li><a href="globals_defs.html"><span>Macros</span></a></li>
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<div class="contents">
&#160;<ul>
<li>COM_STATES
: <a class="el" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982">ModbusRtu.h</a>
</li>
<li>ERR_LIST
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1">ModbusRtu.h</a>
</li>
<li>MB_FC
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6">ModbusRtu.h</a>
</li>
<li>MESSAGE
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230ba">ModbusRtu.h</a>
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&#160;<span id="projectnumber">1.2</span>
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<li><a href="#index_a"><span>a</span></a></li>
<li><a href="#index_b"><span>b</span></a></li>
<li><a href="#index_c"><span>c</span></a></li>
<li><a href="#index_e"><span>e</span></a></li>
<li><a href="#index_f"><span>f</span></a></li>
<li><a href="#index_i"><span>i</span></a></li>
<li><a href="#index_m"><span>m</span></a></li>
<li><a href="#index_n"><span>n</span></a></li>
<li><a href="#index_r"><span>r</span></a></li>
</ul>
</div>
</div><!-- top -->
<div class="contents">
&#160;
<h3><a class="anchor" id="index_a"></a>- a -</h3><ul>
<li>ADD_HI
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c">ModbusRtu.h</a>
</li>
<li>ADD_LO
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_b"></a>- b -</h3><ul>
<li>BYTE_CNT
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baaf84036e1dd68a2e160c3394fc083e892">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_c"></a>- c -</h3><ul>
<li>CHECKSUM_SIZE
: <a class="el" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55baefcc8f6d8d181aaef9d131a357b1a332">ModbusRtu.h</a>
</li>
<li>COM_IDLE
: <a class="el" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20">ModbusRtu.h</a>
</li>
<li>COM_WAITING
: <a class="el" href="_modbus_rtu_8h.html#a4f165b5bd333856a84635b2594013982ad70b4cc84cc2f21d8b46f73f186dae6b">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_e"></a>- e -</h3><ul>
<li>ERR_BAD_CRC
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a918477ee2e5e31f01b03a83f472b63b0">ModbusRtu.h</a>
</li>
<li>ERR_BUFF_OVERFLOW
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1aafd42890a0ce129e23977fc1aca4044b">ModbusRtu.h</a>
</li>
<li>ERR_EXCEPTION
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1ab4be9b5f7e8905633a3c045157f1dd0a">ModbusRtu.h</a>
</li>
<li>ERR_NOT_MASTER
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a12a9ad0aaae512b253a9da9ea19f2b04">ModbusRtu.h</a>
</li>
<li>ERR_POLLING
: <a class="el" href="_modbus_rtu_8h.html#a792f00821300f1c7c768db990db646c1a7d2c6c1b333f4b566c613e52b62ab901">ModbusRtu.h</a>
</li>
<li>EXC_ADDR_RANGE
: <a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280">ModbusRtu.h</a>
</li>
<li>EXC_EXECUTE
: <a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7a00e93edc9146c12fd21490d1a0d15f89">ModbusRtu.h</a>
</li>
<li>EXC_FUNC_CODE
: <a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2">ModbusRtu.h</a>
</li>
<li>EXC_REGS_QUANT
: <a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7a062e13fdfefabb1d620506a526be3920">ModbusRtu.h</a>
</li>
<li>EXCEPTION_SIZE
: <a class="el" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55ba4bf89c487b3f7e29d56eb3fe657d6c05">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_f"></a>- f -</h3><ul>
<li>FUNC
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_i"></a>- i -</h3><ul>
<li>ID
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_m"></a>- m -</h3><ul>
<li>MB_FC_NONE
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a513dc96919a5d5c75f129c1b5b2afea9">ModbusRtu.h</a>
</li>
<li>MB_FC_READ_COILS
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0">ModbusRtu.h</a>
</li>
<li>MB_FC_READ_DISCRETE_INPUT
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e">ModbusRtu.h</a>
</li>
<li>MB_FC_READ_INPUT_REGISTER
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07">ModbusRtu.h</a>
</li>
<li>MB_FC_READ_REGISTERS
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f">ModbusRtu.h</a>
</li>
<li>MB_FC_WRITE_COIL
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7">ModbusRtu.h</a>
</li>
<li>MB_FC_WRITE_MULTIPLE_COILS
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304">ModbusRtu.h</a>
</li>
<li>MB_FC_WRITE_MULTIPLE_REGISTERS
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb">ModbusRtu.h</a>
</li>
<li>MB_FC_WRITE_REGISTER
: <a class="el" href="_modbus_rtu_8h.html#aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_n"></a>- n -</h3><ul>
<li>NB_HI
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6">ModbusRtu.h</a>
</li>
<li>NB_LO
: <a class="el" href="_modbus_rtu_8h.html#aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f">ModbusRtu.h</a>
</li>
<li>NO_REPLY
: <a class="el" href="_modbus_rtu_8h.html#adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae">ModbusRtu.h</a>
</li>
</ul>
<h3><a class="anchor" id="index_r"></a>- r -</h3><ul>
<li>RESPONSE_SIZE
: <a class="el" href="_modbus_rtu_8h.html#a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b">ModbusRtu.h</a>
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&#160;<span id="projectnumber">1.2</span>
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Functions</h2></td></tr>
<tr class="memitem:ga4fa6ede8df85b7cc70b1282b9547378a"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__buffer.html#ga4fa6ede8df85b7cc70b1282b9547378a">Modbus::getInCnt</a> ()</td></tr>
<tr class="memdesc:ga4fa6ede8df85b7cc70b1282b9547378a"><td class="mdescLeft">&#160;</td><td class="mdescRight">number of incoming messages <a href="#ga4fa6ede8df85b7cc70b1282b9547378a">More...</a><br/></td></tr>
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<tr class="memitem:ga6f831ecaf3678c27dafb663a28bf81f0"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__buffer.html#ga6f831ecaf3678c27dafb663a28bf81f0">Modbus::getOutCnt</a> ()</td></tr>
<tr class="memdesc:ga6f831ecaf3678c27dafb663a28bf81f0"><td class="mdescLeft">&#160;</td><td class="mdescRight">number of outcoming messages <a href="#ga6f831ecaf3678c27dafb663a28bf81f0">More...</a><br/></td></tr>
<tr class="separator:ga6f831ecaf3678c27dafb663a28bf81f0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga6883c7f3ff12f084ed56d559d4e06ed0"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__buffer.html#ga6883c7f3ff12f084ed56d559d4e06ed0">Modbus::getErrCnt</a> ()</td></tr>
<tr class="memdesc:ga6883c7f3ff12f084ed56d559d4e06ed0"><td class="mdescLeft">&#160;</td><td class="mdescRight">error counter <a href="#ga6883c7f3ff12f084ed56d559d4e06ed0">More...</a><br/></td></tr>
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<tr class="memitem:ga2f39717d957a929af488c9120488fcdc"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__buffer.html#ga2f39717d957a929af488c9120488fcdc">Modbus::getState</a> ()</td></tr>
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<tr class="memitem:gace7f726db13adc8feeceab987b719531"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__buffer.html#gace7f726db13adc8feeceab987b719531">Modbus::getLastError</a> ()</td></tr>
<tr class="memdesc:gace7f726db13adc8feeceab987b719531"><td class="mdescLeft">&#160;</td><td class="mdescRight">get last error message <a href="#gace7f726db13adc8feeceab987b719531">More...</a><br/></td></tr>
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<p>error counter </p>
<p>Get errors counter value This can be useful to diagnose communication.</p>
<dl class="section return"><dt>Returns</dt><dd>errors counter </dd></dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00386">386</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>number of incoming messages </p>
<p>Get input messages counter value This can be useful to diagnose communication.</p>
<dl class="section return"><dt>Returns</dt><dd>input messages counter </dd></dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00362">362</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>get last error message </p>
<p>Get the last error in the protocol processor</p>
<p>NO_REPLY = 255 Time-out </p>
<dl class="section return"><dt>Returns</dt><dd>EXC_FUNC_CODE = 1 Function code not available </dd>
<dd>
EXC_ADDR_RANGE = 2 Address beyond available space for <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> registers </dd>
<dd>
EXC_REGS_QUANT = 3 Coils or registers number beyond the available space </dd></dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00409">409</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>number of outcoming messages </p>
<p>Get transmitted messages counter value This can be useful to diagnose communication.</p>
<dl class="section return"><dt>Returns</dt><dd>transmitted messages counter </dd></dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00374">374</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>Get modbus master state</p>
<dl class="section return"><dt>Returns</dt><dd>= 0 IDLE, = 1 WAITING FOR ANSWER </dd></dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00396">396</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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Functions</h2></td></tr>
<tr class="memitem:gaf6dd413191ed8a833022046873e0a063"><td class="memItemLeft" align="right" valign="top">boolean&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__loop.html#gaf6dd413191ed8a833022046873e0a063">Modbus::getTimeOutState</a> ()</td></tr>
<tr class="memdesc:gaf6dd413191ed8a833022046873e0a063"><td class="mdescLeft">&#160;</td><td class="mdescRight">get communication watch-dog timer state <a href="#gaf6dd413191ed8a833022046873e0a063">More...</a><br/></td></tr>
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<tr class="memitem:ga19398cabed57b6d085d014af6c149f54"><td class="memItemLeft" align="right" valign="top">int8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__loop.html#ga19398cabed57b6d085d014af6c149f54">Modbus::query</a> (<a class="el" href="structmodbus__t.html">modbus_t</a> telegram)</td></tr>
<tr class="memdesc:ga19398cabed57b6d085d014af6c149f54"><td class="mdescLeft">&#160;</td><td class="mdescRight">only for master <a href="#ga19398cabed57b6d085d014af6c149f54">More...</a><br/></td></tr>
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<tr class="memdesc:ga53bde78490c1cd8e3c070a676bdcfb0d"><td class="mdescLeft">&#160;</td><td class="mdescRight">cyclic poll for master <a href="#ga53bde78490c1cd8e3c070a676bdcfb0d">More...</a><br/></td></tr>
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<tr class="memdesc:gab3ef20562fc8cee14fc85f7e276890b5"><td class="mdescLeft">&#160;</td><td class="mdescRight">cyclic poll for slave <a href="#gab3ef20562fc8cee14fc85f7e276890b5">More...</a><br/></td></tr>
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<p>get communication watch-dog timer state </p>
<p>Return communication Watchdog state. It could be usefull to reset outputs if the watchdog is fired.</p>
<dl class="section return"><dt>Returns</dt><dd>TRUE if millis() &gt; u32timeOut </dd></dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00350">350</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>cyclic poll for master </p>
<p>*** Only for <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> Master *** This method checks if there is any incoming answer if pending. If there is no answer, it would change Master state to COM_IDLE. This method must be called only at loop section. Avoid any delay() function.</p>
<p>Any incoming data would be redirected to au16regs pointer, as defined in its <a class="el" href="structmodbus__t.html" title="Master query structure: This includes all the necessary fields to make the Master generate a Modbus q...">modbus_t</a> query telegram.</p>
<p>nothing </p>
<dl class="section return"><dt>Returns</dt><dd>errors counter </dd></dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00513">513</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<td>(</td>
<td class="paramtype">uint16_t *&#160;</td>
<td class="paramname"><em>regs</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint8_t&#160;</td>
<td class="paramname"><em>u8size</em>&#160;</td>
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<td>)</td>
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<p>cyclic poll for slave </p>
<p>*** Only for <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> Slave *** This method checks if there is any incoming query Afterwards, it would shoot a validation routine plus a register query Avoid any delay() function !!!! After a successful frame between the Master and the Slave, the time-out timer is reset.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">*regs</td><td>register table for communication exchange </td></tr>
<tr><td class="paramname">u8size</td><td>size of the register table </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if no query, 1..4 if communication error, &gt;4 if correct query processed </dd></dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00588">588</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>only for master </p>
<p>*** Only <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> Master *** Generate a query to an slave with a <a class="el" href="structmodbus__t.html" title="Master query structure: This includes all the necessary fields to make the Master generate a Modbus q...">modbus_t</a> telegram structure The Master must be in COM_IDLE mode. After it, its state would be COM_WAITING. This method has to be called only in loop() section.</p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="structmodbus__t.html" title="Master query structure: This includes all the necessary fields to make the Master generate a Modbus q...">modbus_t</a> </dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname"><a class="el" href="structmodbus__t.html" title="Master query structure: This includes all the necessary fields to make the Master generate a Modbus q...">modbus_t</a></td><td>modbus telegram structure (id, fct, ...)</td></tr>
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</dd>
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<dl class="todo"><dt><b><a class="el" href="todo.html#_todo000001">Todo:</a></b></dt><dd>finish function 15 </dd></dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00425">425</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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Functions</h2></td></tr>
<tr class="memitem:ga101809cdd4734537bab58dc315a840b4"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__setup.html#ga101809cdd4734537bab58dc315a840b4">Modbus::Modbus</a> ()</td></tr>
<tr class="memdesc:ga101809cdd4734537bab58dc315a840b4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default Constructor for Master through Serial. <a href="#ga101809cdd4734537bab58dc315a840b4">More...</a><br/></td></tr>
<tr class="separator:ga101809cdd4734537bab58dc315a840b4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga475a4fa0fac491307b10c4529ad6d2a0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__setup.html#ga475a4fa0fac491307b10c4529ad6d2a0">Modbus::begin</a> (long u32speed)</td></tr>
<tr class="memdesc:ga475a4fa0fac491307b10c4529ad6d2a0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initialize class object. <a href="#ga475a4fa0fac491307b10c4529ad6d2a0">More...</a><br/></td></tr>
<tr class="separator:ga475a4fa0fac491307b10c4529ad6d2a0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga9bd497e97ac1777d4f0d4171078d60e0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__setup.html#ga9bd497e97ac1777d4f0d4171078d60e0">Modbus::setID</a> (uint8_t u8id)</td></tr>
<tr class="memdesc:ga9bd497e97ac1777d4f0d4171078d60e0"><td class="mdescLeft">&#160;</td><td class="mdescRight">write new ID for the slave <a href="#ga9bd497e97ac1777d4f0d4171078d60e0">More...</a><br/></td></tr>
<tr class="separator:ga9bd497e97ac1777d4f0d4171078d60e0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga6449894306ff8cc5d4caff09b1b0d1ce"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__setup.html#ga6449894306ff8cc5d4caff09b1b0d1ce">Modbus::getID</a> ()</td></tr>
<tr class="memdesc:ga6449894306ff8cc5d4caff09b1b0d1ce"><td class="mdescLeft">&#160;</td><td class="mdescRight">get slave ID between 1 and 247 <a href="#ga6449894306ff8cc5d4caff09b1b0d1ce">More...</a><br/></td></tr>
<tr class="separator:ga6449894306ff8cc5d4caff09b1b0d1ce"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaf828190ebe24efb1b3b1957429f3872e"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__setup.html#gaf828190ebe24efb1b3b1957429f3872e">Modbus::setTimeOut</a> (uint16_t u16timeout)</td></tr>
<tr class="memdesc:gaf828190ebe24efb1b3b1957429f3872e"><td class="mdescLeft">&#160;</td><td class="mdescRight">write communication watch-dog timer <a href="#gaf828190ebe24efb1b3b1957429f3872e">More...</a><br/></td></tr>
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<td class="memname">void Modbus::begin </td>
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<td class="paramname"><em>u32speed</em>)</td><td></td>
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<p>Initialize class object. </p>
<p>Sets up the serial port using specified baud rate. Call once class has been instantiated, typically within setup().</p>
<dl class="section see"><dt>See Also</dt><dd><a href="http://arduino.cc/en/Serial/Begin#.Uy4CJ6aKlHY">http://arduino.cc/en/Serial/Begin#.Uy4CJ6aKlHY</a> </dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">speed</td><td>baud rate, in standard increments (300..115200) </td></tr>
<tr><td class="paramname">config</td><td>data frame settings (data length, parity and stop bits) </td></tr>
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<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00250">250</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>get slave ID between 1 and 247 </p>
<p>Method to read current slave ID address.</p>
<dl class="section return"><dt>Returns</dt><dd>u8id current slave address between 1 and 247 </dd></dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00323">323</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>Default Constructor for Master through Serial. </p>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00204">204</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>write new ID for the slave </p>
<p>Method to write a new slave ID address.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">u8id</td><td>new slave address between 1 and 247 </td></tr>
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</dd>
</dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00310">310</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<td class="memname">void Modbus::setTimeOut </td>
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<td class="paramtype">uint16_t&#160;</td>
<td class="paramname"><em>u16timeOut</em>)</td><td></td>
<td></td>
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<p>write communication watch-dog timer </p>
<p>Initialize time-out parameter.</p>
<p>Call once class has been instantiated, typically within setup(). The time-out timer is reset each time that there is a successful communication between Master and Slave. It works for both.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">time-out</td><td>value (ms) </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00338">338</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>Master query structure: This includes all the necessary fields to make the Master generate a <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> query. A Master may keep several of these structures and send them cyclically or use them according to program needs.
<a href="structmodbus__t.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Public Attributes</h2></td></tr>
<tr class="memitem:af78ad11f93e63022a1c279de7206358c"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structmodbus__t.html#af78ad11f93e63022a1c279de7206358c">u8id</a></td></tr>
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<tr class="memitem:a57d1630d4548e5d50d79e206a48b09bc"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structmodbus__t.html#a57d1630d4548e5d50d79e206a48b09bc">u8fct</a></td></tr>
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<tr class="memitem:a5b9cee9c1a9415d927543f6cf054eb43"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structmodbus__t.html#a5b9cee9c1a9415d927543f6cf054eb43">u16CoilsNo</a></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Master query structure: This includes all the necessary fields to make the Master generate a <a class="el" href="class_modbus.html" title="Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)...">Modbus</a> query. A Master may keep several of these structures and send them cyclically or use them according to program needs. </p>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00048">48</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<a class="anchor" id="a36212dd6316cbffb8ea31b2a2f5ae1be"></a>
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<p>Pointer to memory image in master </p>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00053">53</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>Number of coils or registers to access </p>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00052">52</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>Address of the first register to access at slave/s </p>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00051">51</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>Function code: 1, 2, 3, 4, 5, 6, 15 or 16 </p>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00050">50</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<p>Slave address between 1 and 247. 0 means broadcast </p>
<p>Definition at line <a class="el" href="_modbus_rtu_8h_source.html#l00049">49</a> of file <a class="el" href="_modbus_rtu_8h_source.html">ModbusRtu.h</a>.</p>
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<dt><a class="anchor" id="_todo000001"></a>Member <a class="el" href="group__loop.html#ga19398cabed57b6d085d014af6c149f54">Modbus::query</a> (<a class="el" href="structmodbus__t.html" title="Master query structure: This includes all the necessary fields to make the Master generate a Modbus q...">modbus_t</a> telegram)</dt>
<dd>finish function 15 </dd>
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\hypertarget{_modbus_rtu_8h}{\section{Modbus\-Rtu.\-h File Reference}
\label{_modbus_rtu_8h}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}
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\subsection*{Classes}
\begin{DoxyCompactItemize}
\item
struct \hyperlink{structmodbus__t}{modbus\-\_\-t}
\begin{DoxyCompactList}\small\item\em Master query structure\-: This includes all the necessary fields to make the Master generate a \hyperlink{class_modbus}{Modbus} query. A Master may keep several of these structures and send them cyclically or use them according to program needs. \end{DoxyCompactList}\item
class \hyperlink{class_modbus}{Modbus}
\begin{DoxyCompactList}\small\item\em Arduino class library for communicating with \hyperlink{class_modbus}{Modbus} devices over U\-S\-B/\-R\-S232/485 (via R\-T\-U protocol). \end{DoxyCompactList}\end{DoxyCompactItemize}
\subsection*{Macros}
\begin{DoxyCompactItemize}
\item
\#define \hyperlink{_modbus_rtu_8h_ac5a7c6ee8dea0ccb09dfc611bd08a0ac}{T35}~5
\item
\#define \hyperlink{_modbus_rtu_8h_a1d5dab30b404fab91608086105afc78c}{M\-A\-X\-\_\-\-B\-U\-F\-F\-E\-R}~64
\begin{DoxyCompactList}\small\item\em maximum size for the communication buffer in bytes \end{DoxyCompactList}\end{DoxyCompactItemize}
\subsection*{Enumerations}
\begin{DoxyCompactItemize}
\item
enum \{ \hyperlink{_modbus_rtu_8h_a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b}{R\-E\-S\-P\-O\-N\-S\-E\-\_\-\-S\-I\-Z\-E} = 6,
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\hyperlink{_modbus_rtu_8h_a06fc87d81c62e9abb8790b6e5713c55baefcc8f6d8d181aaef9d131a357b1a332}{C\-H\-E\-C\-K\-S\-U\-M\-\_\-\-S\-I\-Z\-E} = 2
\}
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enum \hyperlink{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230ba}{M\-E\-S\-S\-A\-G\-E} \{ \\*
\hyperlink{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68}{I\-D} = 0,
\hyperlink{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af}{F\-U\-N\-C},
\hyperlink{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c}{A\-D\-D\-\_\-\-H\-I},
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\\*
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\}
\begin{DoxyCompactList}\small\item\em Indexes to telegram frame positions. \end{DoxyCompactList}\item
enum \hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6}{M\-B\-\_\-\-F\-C} \{ \\*
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a513dc96919a5d5c75f129c1b5b2afea9}{M\-B\-\_\-\-F\-C\-\_\-\-N\-O\-N\-E} = 0,
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0}{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-C\-O\-I\-L\-S} = 1,
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e}{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-D\-I\-S\-C\-R\-E\-T\-E\-\_\-\-I\-N\-P\-U\-T} = 2,
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f}{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S} = 3,
\\*
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07}{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-I\-N\-P\-U\-T\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R} = 4,
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7}{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-C\-O\-I\-L} = 5,
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f}{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R} = 6,
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304}{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-C\-O\-I\-L\-S} = 15,
\\*
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb}{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S} = 16
\}
\begin{DoxyCompactList}\small\item\em \hyperlink{class_modbus}{Modbus} function codes summary. These are the implement function codes either for Master or for Slave. \end{DoxyCompactList}\item
enum \hyperlink{_modbus_rtu_8h_a4f165b5bd333856a84635b2594013982}{C\-O\-M\-\_\-\-S\-T\-A\-T\-E\-S} \{ \hyperlink{_modbus_rtu_8h_a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20}{C\-O\-M\-\_\-\-I\-D\-L\-E} = 0,
\hyperlink{_modbus_rtu_8h_a4f165b5bd333856a84635b2594013982ad70b4cc84cc2f21d8b46f73f186dae6b}{C\-O\-M\-\_\-\-W\-A\-I\-T\-I\-N\-G} = 1
\}
\item
enum \hyperlink{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1}{E\-R\-R\-\_\-\-L\-I\-S\-T} \{ \\*
\hyperlink{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1a12a9ad0aaae512b253a9da9ea19f2b04}{E\-R\-R\-\_\-\-N\-O\-T\-\_\-\-M\-A\-S\-T\-E\-R} = -\/1,
\hyperlink{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1a7d2c6c1b333f4b566c613e52b62ab901}{E\-R\-R\-\_\-\-P\-O\-L\-L\-I\-N\-G} = -\/2,
\hyperlink{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1aafd42890a0ce129e23977fc1aca4044b}{E\-R\-R\-\_\-\-B\-U\-F\-F\-\_\-\-O\-V\-E\-R\-F\-L\-O\-W} = -\/3,
\hyperlink{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1a918477ee2e5e31f01b03a83f472b63b0}{E\-R\-R\-\_\-\-B\-A\-D\-\_\-\-C\-R\-C} = -\/4,
\\*
\hyperlink{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1ab4be9b5f7e8905633a3c045157f1dd0a}{E\-R\-R\-\_\-\-E\-X\-C\-E\-P\-T\-I\-O\-N} = -\/5
\}
\item
enum \{ \\*
\hyperlink{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae}{N\-O\-\_\-\-R\-E\-P\-L\-Y} = 255,
\hyperlink{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2}{E\-X\-C\-\_\-\-F\-U\-N\-C\-\_\-\-C\-O\-D\-E} = 1,
\hyperlink{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280}{E\-X\-C\-\_\-\-A\-D\-D\-R\-\_\-\-R\-A\-N\-G\-E} = 2,
\hyperlink{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7a062e13fdfefabb1d620506a526be3920}{E\-X\-C\-\_\-\-R\-E\-G\-S\-\_\-\-Q\-U\-A\-N\-T} = 3,
\\*
\hyperlink{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7a00e93edc9146c12fd21490d1a0d15f89}{E\-X\-C\-\_\-\-E\-X\-E\-C\-U\-T\-E} = 4
\}
\end{DoxyCompactItemize}
\subsection*{Variables}
\begin{DoxyCompactItemize}
\item
const unsigned char \hyperlink{_modbus_rtu_8h_aede21762dc4aa80a14df8dd40ef105f0}{fctsupported} \mbox{[}$\,$\mbox{]}
\end{DoxyCompactItemize}
\subsection{Detailed Description}
\begin{DoxyVersion}{Version}
1.\-2
\end{DoxyVersion}
\begin{DoxyDate}{Date}
2014.\-09.\-09
\end{DoxyDate}
\begin{DoxyAuthor}{Author}
Samuel Marco i Armengol \href{mailto:sammarcoarmengol@gmail.com}{\tt sammarcoarmengol@gmail.\-com}
\end{DoxyAuthor}
Arduino library for communicating with \hyperlink{class_modbus}{Modbus} devices over R\-S232/\-U\-S\-B/485 via R\-T\-U protocol.
Further information\-: \href{http://modbus.org/}{\tt http\-://modbus.\-org/} \href{http://modbus.org/docs/Modbus_over_serial_line_V1_02.pdf}{\tt http\-://modbus.\-org/docs/\-Modbus\-\_\-over\-\_\-serial\-\_\-line\-\_\-\-V1\-\_\-02.\-pdf}
This library is free software; you can redistribute it and/or modify it under the terms of the G\-N\-U Lesser General Public License as published by the Free Software Foundation; version 2.\-1 of the License.
This library is distributed in the hope that it will be useful, but W\-I\-T\-H\-O\-U\-T A\-N\-Y W\-A\-R\-R\-A\-N\-T\-Y; without even the implied warranty of M\-E\-R\-C\-H\-A\-N\-T\-A\-B\-I\-L\-I\-T\-Y or F\-I\-T\-N\-E\-S\-S F\-O\-R A P\-A\-R\-T\-I\-C\-U\-L\-A\-R P\-U\-R\-P\-O\-S\-E. See the G\-N\-U Lesser General Public License for more details.
You should have received a copy of the G\-N\-U Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, M\-A 02110-\/1301 U\-S\-A
Definition in file \hyperlink{_modbus_rtu_8h_source}{Modbus\-Rtu.\-h}.
\subsection{Macro Definition Documentation}
\hypertarget{_modbus_rtu_8h_a1d5dab30b404fab91608086105afc78c}{\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-A\-X\-\_\-\-B\-U\-F\-F\-E\-R@{M\-A\-X\-\_\-\-B\-U\-F\-F\-E\-R}}
\index{M\-A\-X\-\_\-\-B\-U\-F\-F\-E\-R@{M\-A\-X\-\_\-\-B\-U\-F\-F\-E\-R}!ModbusRtu.h@{Modbus\-Rtu.\-h}}
\subsubsection[{M\-A\-X\-\_\-\-B\-U\-F\-F\-E\-R}]{\setlength{\rightskip}{0pt plus 5cm}\#define M\-A\-X\-\_\-\-B\-U\-F\-F\-E\-R~64}}\label{_modbus_rtu_8h_a1d5dab30b404fab91608086105afc78c}
maximum size for the communication buffer in bytes
Definition at line 133 of file Modbus\-Rtu.\-h.
\hypertarget{_modbus_rtu_8h_ac5a7c6ee8dea0ccb09dfc611bd08a0ac}{\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!T35@{T35}}
\index{T35@{T35}!ModbusRtu.h@{Modbus\-Rtu.\-h}}
\subsubsection[{T35}]{\setlength{\rightskip}{0pt plus 5cm}\#define T35~5}}\label{_modbus_rtu_8h_ac5a7c6ee8dea0ccb09dfc611bd08a0ac}
Definition at line 132 of file Modbus\-Rtu.\-h.
\subsection{Enumeration Type Documentation}
\hypertarget{_modbus_rtu_8h_a06fc87d81c62e9abb8790b6e5713c55b}{\subsubsection[{anonymous enum}]{\setlength{\rightskip}{0pt plus 5cm}anonymous enum}}\label{_modbus_rtu_8h_a06fc87d81c62e9abb8790b6e5713c55b}
\begin{Desc}
\item[Enumerator]\par
\begin{description}
\index{R\-E\-S\-P\-O\-N\-S\-E\-\_\-\-S\-I\-Z\-E@{R\-E\-S\-P\-O\-N\-S\-E\-\_\-\-S\-I\-Z\-E}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!R\-E\-S\-P\-O\-N\-S\-E\-\_\-\-S\-I\-Z\-E@{R\-E\-S\-P\-O\-N\-S\-E\-\_\-\-S\-I\-Z\-E}}\item[{\em
\hypertarget{_modbus_rtu_8h_a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b}{R\-E\-S\-P\-O\-N\-S\-E\-\_\-\-S\-I\-Z\-E}\label{_modbus_rtu_8h_a06fc87d81c62e9abb8790b6e5713c55bad1acb34c5312efc75c4a007eae09433b}
}]\index{E\-X\-C\-E\-P\-T\-I\-O\-N\-\_\-\-S\-I\-Z\-E@{E\-X\-C\-E\-P\-T\-I\-O\-N\-\_\-\-S\-I\-Z\-E}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-X\-C\-E\-P\-T\-I\-O\-N\-\_\-\-S\-I\-Z\-E@{E\-X\-C\-E\-P\-T\-I\-O\-N\-\_\-\-S\-I\-Z\-E}}\item[{\em
\hypertarget{_modbus_rtu_8h_a06fc87d81c62e9abb8790b6e5713c55ba4bf89c487b3f7e29d56eb3fe657d6c05}{E\-X\-C\-E\-P\-T\-I\-O\-N\-\_\-\-S\-I\-Z\-E}\label{_modbus_rtu_8h_a06fc87d81c62e9abb8790b6e5713c55ba4bf89c487b3f7e29d56eb3fe657d6c05}
}]\index{C\-H\-E\-C\-K\-S\-U\-M\-\_\-\-S\-I\-Z\-E@{C\-H\-E\-C\-K\-S\-U\-M\-\_\-\-S\-I\-Z\-E}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!C\-H\-E\-C\-K\-S\-U\-M\-\_\-\-S\-I\-Z\-E@{C\-H\-E\-C\-K\-S\-U\-M\-\_\-\-S\-I\-Z\-E}}\item[{\em
\hypertarget{_modbus_rtu_8h_a06fc87d81c62e9abb8790b6e5713c55baefcc8f6d8d181aaef9d131a357b1a332}{C\-H\-E\-C\-K\-S\-U\-M\-\_\-\-S\-I\-Z\-E}\label{_modbus_rtu_8h_a06fc87d81c62e9abb8790b6e5713c55baefcc8f6d8d181aaef9d131a357b1a332}
}]\end{description}
\end{Desc}
Definition at line 57 of file Modbus\-Rtu.\-h.
\hypertarget{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7}{\subsubsection[{anonymous enum}]{\setlength{\rightskip}{0pt plus 5cm}anonymous enum}}\label{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7}
\begin{Desc}
\item[Enumerator]\par
\begin{description}
\index{N\-O\-\_\-\-R\-E\-P\-L\-Y@{N\-O\-\_\-\-R\-E\-P\-L\-Y}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!N\-O\-\_\-\-R\-E\-P\-L\-Y@{N\-O\-\_\-\-R\-E\-P\-L\-Y}}\item[{\em
\hypertarget{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae}{N\-O\-\_\-\-R\-E\-P\-L\-Y}\label{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7aa04c58a8cc2e7777f6f781e8d51524ae}
}]\index{E\-X\-C\-\_\-\-F\-U\-N\-C\-\_\-\-C\-O\-D\-E@{E\-X\-C\-\_\-\-F\-U\-N\-C\-\_\-\-C\-O\-D\-E}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-X\-C\-\_\-\-F\-U\-N\-C\-\_\-\-C\-O\-D\-E@{E\-X\-C\-\_\-\-F\-U\-N\-C\-\_\-\-C\-O\-D\-E}}\item[{\em
\hypertarget{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2}{E\-X\-C\-\_\-\-F\-U\-N\-C\-\_\-\-C\-O\-D\-E}\label{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7ad82ec66545269170f1401af6e418e8f2}
}]\index{E\-X\-C\-\_\-\-A\-D\-D\-R\-\_\-\-R\-A\-N\-G\-E@{E\-X\-C\-\_\-\-A\-D\-D\-R\-\_\-\-R\-A\-N\-G\-E}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-X\-C\-\_\-\-A\-D\-D\-R\-\_\-\-R\-A\-N\-G\-E@{E\-X\-C\-\_\-\-A\-D\-D\-R\-\_\-\-R\-A\-N\-G\-E}}\item[{\em
\hypertarget{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280}{E\-X\-C\-\_\-\-A\-D\-D\-R\-\_\-\-R\-A\-N\-G\-E}\label{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7ad3899b13b2069997f5db7f18e9978280}
}]\index{E\-X\-C\-\_\-\-R\-E\-G\-S\-\_\-\-Q\-U\-A\-N\-T@{E\-X\-C\-\_\-\-R\-E\-G\-S\-\_\-\-Q\-U\-A\-N\-T}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-X\-C\-\_\-\-R\-E\-G\-S\-\_\-\-Q\-U\-A\-N\-T@{E\-X\-C\-\_\-\-R\-E\-G\-S\-\_\-\-Q\-U\-A\-N\-T}}\item[{\em
\hypertarget{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7a062e13fdfefabb1d620506a526be3920}{E\-X\-C\-\_\-\-R\-E\-G\-S\-\_\-\-Q\-U\-A\-N\-T}\label{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7a062e13fdfefabb1d620506a526be3920}
}]\index{E\-X\-C\-\_\-\-E\-X\-E\-C\-U\-T\-E@{E\-X\-C\-\_\-\-E\-X\-E\-C\-U\-T\-E}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-X\-C\-\_\-\-E\-X\-E\-C\-U\-T\-E@{E\-X\-C\-\_\-\-E\-X\-E\-C\-U\-T\-E}}\item[{\em
\hypertarget{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7a00e93edc9146c12fd21490d1a0d15f89}{E\-X\-C\-\_\-\-E\-X\-E\-C\-U\-T\-E}\label{_modbus_rtu_8h_adf764cbdea00d65edcd07bb9953ad2b7a00e93edc9146c12fd21490d1a0d15f89}
}]\end{description}
\end{Desc}
Definition at line 113 of file Modbus\-Rtu.\-h.
\hypertarget{_modbus_rtu_8h_a4f165b5bd333856a84635b2594013982}{\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!C\-O\-M\-\_\-\-S\-T\-A\-T\-E\-S@{C\-O\-M\-\_\-\-S\-T\-A\-T\-E\-S}}
\index{C\-O\-M\-\_\-\-S\-T\-A\-T\-E\-S@{C\-O\-M\-\_\-\-S\-T\-A\-T\-E\-S}!ModbusRtu.h@{Modbus\-Rtu.\-h}}
\subsubsection[{C\-O\-M\-\_\-\-S\-T\-A\-T\-E\-S}]{\setlength{\rightskip}{0pt plus 5cm}enum {\bf C\-O\-M\-\_\-\-S\-T\-A\-T\-E\-S}}}\label{_modbus_rtu_8h_a4f165b5bd333856a84635b2594013982}
\begin{Desc}
\item[Enumerator]\par
\begin{description}
\index{C\-O\-M\-\_\-\-I\-D\-L\-E@{C\-O\-M\-\_\-\-I\-D\-L\-E}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!C\-O\-M\-\_\-\-I\-D\-L\-E@{C\-O\-M\-\_\-\-I\-D\-L\-E}}\item[{\em
\hypertarget{_modbus_rtu_8h_a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20}{C\-O\-M\-\_\-\-I\-D\-L\-E}\label{_modbus_rtu_8h_a4f165b5bd333856a84635b2594013982a3e262bfb13968e43ab8ea55a03ba8b20}
}]\index{C\-O\-M\-\_\-\-W\-A\-I\-T\-I\-N\-G@{C\-O\-M\-\_\-\-W\-A\-I\-T\-I\-N\-G}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!C\-O\-M\-\_\-\-W\-A\-I\-T\-I\-N\-G@{C\-O\-M\-\_\-\-W\-A\-I\-T\-I\-N\-G}}\item[{\em
\hypertarget{_modbus_rtu_8h_a4f165b5bd333856a84635b2594013982ad70b4cc84cc2f21d8b46f73f186dae6b}{C\-O\-M\-\_\-\-W\-A\-I\-T\-I\-N\-G}\label{_modbus_rtu_8h_a4f165b5bd333856a84635b2594013982ad70b4cc84cc2f21d8b46f73f186dae6b}
}]\end{description}
\end{Desc}
Definition at line 99 of file Modbus\-Rtu.\-h.
\hypertarget{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1}{\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-R\-R\-\_\-\-L\-I\-S\-T@{E\-R\-R\-\_\-\-L\-I\-S\-T}}
\index{E\-R\-R\-\_\-\-L\-I\-S\-T@{E\-R\-R\-\_\-\-L\-I\-S\-T}!ModbusRtu.h@{Modbus\-Rtu.\-h}}
\subsubsection[{E\-R\-R\-\_\-\-L\-I\-S\-T}]{\setlength{\rightskip}{0pt plus 5cm}enum {\bf E\-R\-R\-\_\-\-L\-I\-S\-T}}}\label{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1}
\begin{Desc}
\item[Enumerator]\par
\begin{description}
\index{E\-R\-R\-\_\-\-N\-O\-T\-\_\-\-M\-A\-S\-T\-E\-R@{E\-R\-R\-\_\-\-N\-O\-T\-\_\-\-M\-A\-S\-T\-E\-R}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-R\-R\-\_\-\-N\-O\-T\-\_\-\-M\-A\-S\-T\-E\-R@{E\-R\-R\-\_\-\-N\-O\-T\-\_\-\-M\-A\-S\-T\-E\-R}}\item[{\em
\hypertarget{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1a12a9ad0aaae512b253a9da9ea19f2b04}{E\-R\-R\-\_\-\-N\-O\-T\-\_\-\-M\-A\-S\-T\-E\-R}\label{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1a12a9ad0aaae512b253a9da9ea19f2b04}
}]\index{E\-R\-R\-\_\-\-P\-O\-L\-L\-I\-N\-G@{E\-R\-R\-\_\-\-P\-O\-L\-L\-I\-N\-G}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-R\-R\-\_\-\-P\-O\-L\-L\-I\-N\-G@{E\-R\-R\-\_\-\-P\-O\-L\-L\-I\-N\-G}}\item[{\em
\hypertarget{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1a7d2c6c1b333f4b566c613e52b62ab901}{E\-R\-R\-\_\-\-P\-O\-L\-L\-I\-N\-G}\label{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1a7d2c6c1b333f4b566c613e52b62ab901}
}]\index{E\-R\-R\-\_\-\-B\-U\-F\-F\-\_\-\-O\-V\-E\-R\-F\-L\-O\-W@{E\-R\-R\-\_\-\-B\-U\-F\-F\-\_\-\-O\-V\-E\-R\-F\-L\-O\-W}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-R\-R\-\_\-\-B\-U\-F\-F\-\_\-\-O\-V\-E\-R\-F\-L\-O\-W@{E\-R\-R\-\_\-\-B\-U\-F\-F\-\_\-\-O\-V\-E\-R\-F\-L\-O\-W}}\item[{\em
\hypertarget{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1aafd42890a0ce129e23977fc1aca4044b}{E\-R\-R\-\_\-\-B\-U\-F\-F\-\_\-\-O\-V\-E\-R\-F\-L\-O\-W}\label{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1aafd42890a0ce129e23977fc1aca4044b}
}]\index{E\-R\-R\-\_\-\-B\-A\-D\-\_\-\-C\-R\-C@{E\-R\-R\-\_\-\-B\-A\-D\-\_\-\-C\-R\-C}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-R\-R\-\_\-\-B\-A\-D\-\_\-\-C\-R\-C@{E\-R\-R\-\_\-\-B\-A\-D\-\_\-\-C\-R\-C}}\item[{\em
\hypertarget{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1a918477ee2e5e31f01b03a83f472b63b0}{E\-R\-R\-\_\-\-B\-A\-D\-\_\-\-C\-R\-C}\label{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1a918477ee2e5e31f01b03a83f472b63b0}
}]\index{E\-R\-R\-\_\-\-E\-X\-C\-E\-P\-T\-I\-O\-N@{E\-R\-R\-\_\-\-E\-X\-C\-E\-P\-T\-I\-O\-N}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!E\-R\-R\-\_\-\-E\-X\-C\-E\-P\-T\-I\-O\-N@{E\-R\-R\-\_\-\-E\-X\-C\-E\-P\-T\-I\-O\-N}}\item[{\em
\hypertarget{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1ab4be9b5f7e8905633a3c045157f1dd0a}{E\-R\-R\-\_\-\-E\-X\-C\-E\-P\-T\-I\-O\-N}\label{_modbus_rtu_8h_a792f00821300f1c7c768db990db646c1ab4be9b5f7e8905633a3c045157f1dd0a}
}]\end{description}
\end{Desc}
Definition at line 105 of file Modbus\-Rtu.\-h.
\hypertarget{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6}{\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-B\-\_\-\-F\-C@{M\-B\-\_\-\-F\-C}}
\index{M\-B\-\_\-\-F\-C@{M\-B\-\_\-\-F\-C}!ModbusRtu.h@{Modbus\-Rtu.\-h}}
\subsubsection[{M\-B\-\_\-\-F\-C}]{\setlength{\rightskip}{0pt plus 5cm}enum {\bf M\-B\-\_\-\-F\-C}}}\label{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6}
\hyperlink{class_modbus}{Modbus} function codes summary. These are the implement function codes either for Master or for Slave.
\begin{DoxySeeAlso}{See Also}
also \hyperlink{_modbus_rtu_8h_aede21762dc4aa80a14df8dd40ef105f0}{fctsupported}
also \hyperlink{structmodbus__t}{modbus\-\_\-t}
\end{DoxySeeAlso}
\begin{Desc}
\item[Enumerator]\par
\begin{description}
\index{M\-B\-\_\-\-F\-C\-\_\-\-N\-O\-N\-E@{M\-B\-\_\-\-F\-C\-\_\-\-N\-O\-N\-E}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-B\-\_\-\-F\-C\-\_\-\-N\-O\-N\-E@{M\-B\-\_\-\-F\-C\-\_\-\-N\-O\-N\-E}}\item[{\em
\hypertarget{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a513dc96919a5d5c75f129c1b5b2afea9}{M\-B\-\_\-\-F\-C\-\_\-\-N\-O\-N\-E}\label{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a513dc96919a5d5c75f129c1b5b2afea9}
}]null operator \index{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-C\-O\-I\-L\-S@{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-C\-O\-I\-L\-S}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-C\-O\-I\-L\-S@{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-C\-O\-I\-L\-S}}\item[{\em
\hypertarget{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0}{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-C\-O\-I\-L\-S}\label{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0}
}]F\-C\-T=1 -\/$>$ read coils or digital outputs \index{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-D\-I\-S\-C\-R\-E\-T\-E\-\_\-\-I\-N\-P\-U\-T@{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-D\-I\-S\-C\-R\-E\-T\-E\-\_\-\-I\-N\-P\-U\-T}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-D\-I\-S\-C\-R\-E\-T\-E\-\_\-\-I\-N\-P\-U\-T@{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-D\-I\-S\-C\-R\-E\-T\-E\-\_\-\-I\-N\-P\-U\-T}}\item[{\em
\hypertarget{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e}{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-D\-I\-S\-C\-R\-E\-T\-E\-\_\-\-I\-N\-P\-U\-T}\label{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e}
}]F\-C\-T=2 -\/$>$ read digital inputs \index{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S@{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S@{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S}}\item[{\em
\hypertarget{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f}{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S}\label{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f}
}]F\-C\-T=3 -\/$>$ read registers or analog outputs \index{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-I\-N\-P\-U\-T\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R@{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-I\-N\-P\-U\-T\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-I\-N\-P\-U\-T\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R@{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-I\-N\-P\-U\-T\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R}}\item[{\em
\hypertarget{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07}{M\-B\-\_\-\-F\-C\-\_\-\-R\-E\-A\-D\-\_\-\-I\-N\-P\-U\-T\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R}\label{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07}
}]F\-C\-T=4 -\/$>$ read analog inputs \index{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-C\-O\-I\-L@{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-C\-O\-I\-L}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-C\-O\-I\-L@{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-C\-O\-I\-L}}\item[{\em
\hypertarget{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7}{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-C\-O\-I\-L}\label{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7}
}]F\-C\-T=5 -\/$>$ write single coil or output \index{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R@{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R@{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R}}\item[{\em
\hypertarget{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f}{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R}\label{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f}
}]F\-C\-T=6 -\/$>$ write single register \index{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-C\-O\-I\-L\-S@{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-C\-O\-I\-L\-S}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-C\-O\-I\-L\-S@{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-C\-O\-I\-L\-S}}\item[{\em
\hypertarget{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304}{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-C\-O\-I\-L\-S}\label{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304}
}]F\-C\-T=15 -\/$>$ write multiple coils or outputs \index{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S@{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S@{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S}}\item[{\em
\hypertarget{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb}{M\-B\-\_\-\-F\-C\-\_\-\-W\-R\-I\-T\-E\-\_\-\-M\-U\-L\-T\-I\-P\-L\-E\-\_\-\-R\-E\-G\-I\-S\-T\-E\-R\-S}\label{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb}
}]F\-C\-T=16 -\/$>$ write multiple registers \end{description}
\end{Desc}
Definition at line 87 of file Modbus\-Rtu.\-h.
\hypertarget{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230ba}{\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!M\-E\-S\-S\-A\-G\-E@{M\-E\-S\-S\-A\-G\-E}}
\index{M\-E\-S\-S\-A\-G\-E@{M\-E\-S\-S\-A\-G\-E}!ModbusRtu.h@{Modbus\-Rtu.\-h}}
\subsubsection[{M\-E\-S\-S\-A\-G\-E}]{\setlength{\rightskip}{0pt plus 5cm}enum {\bf M\-E\-S\-S\-A\-G\-E}}}\label{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230ba}
Indexes to telegram frame positions.
\begin{Desc}
\item[Enumerator]\par
\begin{description}
\index{I\-D@{I\-D}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!I\-D@{I\-D}}\item[{\em
\hypertarget{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68}{I\-D}\label{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa001479a58fb44c39a29b20d565081a68}
}]I\-D field. \index{F\-U\-N\-C@{F\-U\-N\-C}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!F\-U\-N\-C@{F\-U\-N\-C}}\item[{\em
\hypertarget{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af}{F\-U\-N\-C}\label{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa389e03ce61ac2d93fd54069187ab58af}
}]Function code position. \index{A\-D\-D\-\_\-\-H\-I@{A\-D\-D\-\_\-\-H\-I}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!A\-D\-D\-\_\-\-H\-I@{A\-D\-D\-\_\-\-H\-I}}\item[{\em
\hypertarget{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c}{A\-D\-D\-\_\-\-H\-I}\label{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baad19e7653c9276b91fb590af017de192c}
}]Address high byte. \index{A\-D\-D\-\_\-\-L\-O@{A\-D\-D\-\_\-\-L\-O}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!A\-D\-D\-\_\-\-L\-O@{A\-D\-D\-\_\-\-L\-O}}\item[{\em
\hypertarget{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c}{A\-D\-D\-\_\-\-L\-O}\label{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa2cbdff2e20e58233096845bf42acc97c}
}]Address low byte. \index{N\-B\-\_\-\-H\-I@{N\-B\-\_\-\-H\-I}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!N\-B\-\_\-\-H\-I@{N\-B\-\_\-\-H\-I}}\item[{\em
\hypertarget{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6}{N\-B\-\_\-\-H\-I}\label{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa61f961bb4614db2fc51125331f79a9d6}
}]Number of coils or registers high byte. \index{N\-B\-\_\-\-L\-O@{N\-B\-\_\-\-L\-O}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!N\-B\-\_\-\-L\-O@{N\-B\-\_\-\-L\-O}}\item[{\em
\hypertarget{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f}{N\-B\-\_\-\-L\-O}\label{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baa22b2a3a58501a5bbe69ef569aa7fb30f}
}]Number of coils or registers low byte. \index{B\-Y\-T\-E\-\_\-\-C\-N\-T@{B\-Y\-T\-E\-\_\-\-C\-N\-T}!Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}}\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!B\-Y\-T\-E\-\_\-\-C\-N\-T@{B\-Y\-T\-E\-\_\-\-C\-N\-T}}\item[{\em
\hypertarget{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baaf84036e1dd68a2e160c3394fc083e892}{B\-Y\-T\-E\-\_\-\-C\-N\-T}\label{_modbus_rtu_8h_aa9996e8b4648c78acf6cde2401e230baaf84036e1dd68a2e160c3394fc083e892}
}]byte counter \end{description}
\end{Desc}
Definition at line 68 of file Modbus\-Rtu.\-h.
\subsection{Variable Documentation}
\hypertarget{_modbus_rtu_8h_aede21762dc4aa80a14df8dd40ef105f0}{\index{Modbus\-Rtu.\-h@{Modbus\-Rtu.\-h}!fctsupported@{fctsupported}}
\index{fctsupported@{fctsupported}!ModbusRtu.h@{Modbus\-Rtu.\-h}}
\subsubsection[{fctsupported}]{\setlength{\rightskip}{0pt plus 5cm}const unsigned char fctsupported\mbox{[}$\,$\mbox{]}}}\label{_modbus_rtu_8h_aede21762dc4aa80a14df8dd40ef105f0}
{\bfseries Initial value\-:}
\begin{DoxyCode}
= \{
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a0b2250567e3e0e43522a64cdce637ce0}{MB\_FC\_READ\_COILS},
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6ac2b52680d6c0bbe3d3e0e9ec7a88fc2e}{MB\_FC\_READ\_DISCRETE\_INPUT},
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a0c6066cf0a67a1bb349da35ef31e4e8f}{MB\_FC\_READ\_REGISTERS},
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a9b2d4a3fb96e4af559d5330ad0c01c07}{MB\_FC\_READ\_INPUT\_REGISTER},
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a90126d6c25fb5711c103e819ccda01c7}{MB\_FC\_WRITE\_COIL},
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a74e1ffd48177f0e7e33c2c968a1bd86f}{MB\_FC\_WRITE\_REGISTER},
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6ac69c42d25cbc0ef303de57bd3d0e2304}{MB\_FC\_WRITE\_MULTIPLE\_COILS},
\hyperlink{_modbus_rtu_8h_aff1341ea5077cc6097a0d7db89be4cf6a2ccdcde4f07865ffb47fbea0a01026bb}{MB\_FC\_WRITE\_MULTIPLE\_REGISTERS}
\}
\end{DoxyCode}
Definition at line 121 of file Modbus\-Rtu.\-h.

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\section{Class List}
Here are the classes, structs, unions and interfaces with brief descriptions\-:\begin{DoxyCompactList}
\item\contentsline{section}{\hyperlink{class_modbus}{Modbus} \\*Arduino class library for communicating with \hyperlink{class_modbus}{Modbus} devices over U\-S\-B/\-R\-S232/485 (via R\-T\-U protocol) }{\pageref{class_modbus}}{}
\item\contentsline{section}{\hyperlink{structmodbus__t}{modbus\-\_\-t} \\*Master query structure\-: This includes all the necessary fields to make the Master generate a \hyperlink{class_modbus}{Modbus} query. A Master may keep several of these structures and send them cyclically or use them according to program needs }{\pageref{structmodbus__t}}{}
\end{DoxyCompactList}

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\hypertarget{class_modbus}{\section{Modbus Class Reference}
\label{class_modbus}\index{Modbus@{Modbus}}
}
Arduino class library for communicating with \hyperlink{class_modbus}{Modbus} devices over U\-S\-B/\-R\-S232/485 (via R\-T\-U protocol).
{\ttfamily \#include $<$Modbus\-Rtu.\-h$>$}
\subsection*{Public Member Functions}
\begin{DoxyCompactItemize}
\item
\hyperlink{group__setup_ga101809cdd4734537bab58dc315a840b4}{Modbus} ()
\begin{DoxyCompactList}\small\item\em Default Constructor for Master through Serial. \end{DoxyCompactList}\item
\hyperlink{class_modbus_afbbf7c81565d8e1ea1cd5890a96e7507}{Modbus} (uint8\-\_\-t u8id, uint8\-\_\-t u8serno)
\item
\hyperlink{class_modbus_a5e23a7b669d0c2d5be1c0054c7c54dca}{Modbus} (uint8\-\_\-t u8id, uint8\-\_\-t u8serno, uint8\-\_\-t u8txenpin)
\item
void \hyperlink{group__setup_ga475a4fa0fac491307b10c4529ad6d2a0}{begin} (long u32speed)
\begin{DoxyCompactList}\small\item\em Initialize class object. \end{DoxyCompactList}\item
void \hyperlink{class_modbus_a4f9673a3d113c49af69cb87b030ef099}{begin} ()
\item
void \hyperlink{group__setup_gaf828190ebe24efb1b3b1957429f3872e}{set\-Time\-Out} (uint16\-\_\-t u16timeout)
\begin{DoxyCompactList}\small\item\em write communication watch-\/dog timer \end{DoxyCompactList}\item
uint16\-\_\-t \hyperlink{class_modbus_ac860024db3117a2ef907d0325b2fb7a1}{get\-Time\-Out} ()
\begin{DoxyCompactList}\small\item\em get communication watch-\/dog timer value \end{DoxyCompactList}\item
boolean \hyperlink{group__loop_gaf6dd413191ed8a833022046873e0a063}{get\-Time\-Out\-State} ()
\begin{DoxyCompactList}\small\item\em get communication watch-\/dog timer state \end{DoxyCompactList}\item
int8\-\_\-t \hyperlink{group__loop_ga19398cabed57b6d085d014af6c149f54}{query} (\hyperlink{structmodbus__t}{modbus\-\_\-t} telegram)
\begin{DoxyCompactList}\small\item\em only for master \end{DoxyCompactList}\item
int8\-\_\-t \hyperlink{group__loop_ga53bde78490c1cd8e3c070a676bdcfb0d}{poll} ()
\begin{DoxyCompactList}\small\item\em cyclic poll for master \end{DoxyCompactList}\item
int8\-\_\-t \hyperlink{group__loop_gab3ef20562fc8cee14fc85f7e276890b5}{poll} (uint16\-\_\-t $\ast$regs, uint8\-\_\-t u8size)
\begin{DoxyCompactList}\small\item\em cyclic poll for slave \end{DoxyCompactList}\item
uint16\-\_\-t \hyperlink{group__buffer_ga4fa6ede8df85b7cc70b1282b9547378a}{get\-In\-Cnt} ()
\begin{DoxyCompactList}\small\item\em number of incoming messages \end{DoxyCompactList}\item
uint16\-\_\-t \hyperlink{group__buffer_ga6f831ecaf3678c27dafb663a28bf81f0}{get\-Out\-Cnt} ()
\begin{DoxyCompactList}\small\item\em number of outcoming messages \end{DoxyCompactList}\item
uint16\-\_\-t \hyperlink{group__buffer_ga6883c7f3ff12f084ed56d559d4e06ed0}{get\-Err\-Cnt} ()
\begin{DoxyCompactList}\small\item\em error counter \end{DoxyCompactList}\item
uint8\-\_\-t \hyperlink{group__setup_ga6449894306ff8cc5d4caff09b1b0d1ce}{get\-I\-D} ()
\begin{DoxyCompactList}\small\item\em get slave I\-D between 1 and 247 \end{DoxyCompactList}\item
uint8\-\_\-t \hyperlink{group__buffer_ga2f39717d957a929af488c9120488fcdc}{get\-State} ()
\item
uint8\-\_\-t \hyperlink{group__buffer_gace7f726db13adc8feeceab987b719531}{get\-Last\-Error} ()
\begin{DoxyCompactList}\small\item\em get last error message \end{DoxyCompactList}\item
void \hyperlink{group__setup_ga9bd497e97ac1777d4f0d4171078d60e0}{set\-I\-D} (uint8\-\_\-t u8id)
\begin{DoxyCompactList}\small\item\em write new I\-D for the slave \end{DoxyCompactList}\item
void \hyperlink{class_modbus_a0d80101b650344c712a085c4bb005c4c}{end} ()
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\subsection{Detailed Description}
Arduino class library for communicating with \hyperlink{class_modbus}{Modbus} devices over U\-S\-B/\-R\-S232/485 (via R\-T\-U protocol).
Definition at line 141 of file Modbus\-Rtu.\-h.
\subsection{Constructor \& Destructor Documentation}
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Definition at line 218 of file Modbus\-Rtu.\-h.
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Definition at line 234 of file Modbus\-Rtu.\-h.
\subsection{Member Function Documentation}
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Definition at line 299 of file Modbus\-Rtu.\-h.
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finish any communication and release serial communication port
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get communication watch-\/dog timer value
The documentation for this class was generated from the following file\-:\begin{DoxyCompactItemize}
\item
\hyperlink{_modbus_rtu_8h}{Modbus\-Rtu.\-h}\end{DoxyCompactItemize}

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\section{File List}
Here is a list of all files with brief descriptions\-:\begin{DoxyCompactList}
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\hypertarget{group__buffer}{\section{Modbus Buffer Management}
\label{group__buffer}\index{Modbus Buffer Management@{Modbus Buffer Management}}
}
\subsection*{Functions}
\begin{DoxyCompactItemize}
\item
uint16\-\_\-t \hyperlink{group__buffer_ga4fa6ede8df85b7cc70b1282b9547378a}{Modbus\-::get\-In\-Cnt} ()
\begin{DoxyCompactList}\small\item\em number of incoming messages \end{DoxyCompactList}\item
uint16\-\_\-t \hyperlink{group__buffer_ga6f831ecaf3678c27dafb663a28bf81f0}{Modbus\-::get\-Out\-Cnt} ()
\begin{DoxyCompactList}\small\item\em number of outcoming messages \end{DoxyCompactList}\item
uint16\-\_\-t \hyperlink{group__buffer_ga6883c7f3ff12f084ed56d559d4e06ed0}{Modbus\-::get\-Err\-Cnt} ()
\begin{DoxyCompactList}\small\item\em error counter \end{DoxyCompactList}\item
uint8\-\_\-t \hyperlink{group__buffer_ga2f39717d957a929af488c9120488fcdc}{Modbus\-::get\-State} ()
\item
uint8\-\_\-t \hyperlink{group__buffer_gace7f726db13adc8feeceab987b719531}{Modbus\-::get\-Last\-Error} ()
\begin{DoxyCompactList}\small\item\em get last error message \end{DoxyCompactList}\end{DoxyCompactItemize}
\subsection{Detailed Description}
\subsection{Function Documentation}
\hypertarget{group__buffer_ga6883c7f3ff12f084ed56d559d4e06ed0}{\index{Modbus Buffer Management@{Modbus Buffer Management}!get\-Err\-Cnt@{get\-Err\-Cnt}}
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error counter
Get errors counter value This can be useful to diagnose communication.
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errors counter
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Definition at line 386 of file Modbus\-Rtu.\-h.
\hypertarget{group__buffer_ga4fa6ede8df85b7cc70b1282b9547378a}{\index{Modbus Buffer Management@{Modbus Buffer Management}!get\-In\-Cnt@{get\-In\-Cnt}}
\index{get\-In\-Cnt@{get\-In\-Cnt}!Modbus Buffer Management@{Modbus Buffer Management}}
\subsubsection[{get\-In\-Cnt}]{\setlength{\rightskip}{0pt plus 5cm}uint16\-\_\-t Modbus\-::get\-In\-Cnt (
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number of incoming messages
Get input messages counter value This can be useful to diagnose communication.
\begin{DoxyReturn}{Returns}
input messages counter
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Definition at line 362 of file Modbus\-Rtu.\-h.
\hypertarget{group__buffer_gace7f726db13adc8feeceab987b719531}{\index{Modbus Buffer Management@{Modbus Buffer Management}!get\-Last\-Error@{get\-Last\-Error}}
\index{get\-Last\-Error@{get\-Last\-Error}!Modbus Buffer Management@{Modbus Buffer Management}}
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get last error message
Get the last error in the protocol processor
N\-O\-\_\-\-R\-E\-P\-L\-Y = 255 Time-\/out \begin{DoxyReturn}{Returns}
E\-X\-C\-\_\-\-F\-U\-N\-C\-\_\-\-C\-O\-D\-E = 1 Function code not available
E\-X\-C\-\_\-\-A\-D\-D\-R\-\_\-\-R\-A\-N\-G\-E = 2 Address beyond available space for \hyperlink{class_modbus}{Modbus} registers
E\-X\-C\-\_\-\-R\-E\-G\-S\-\_\-\-Q\-U\-A\-N\-T = 3 Coils or registers number beyond the available space
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Definition at line 409 of file Modbus\-Rtu.\-h.
\hypertarget{group__buffer_ga6f831ecaf3678c27dafb663a28bf81f0}{\index{Modbus Buffer Management@{Modbus Buffer Management}!get\-Out\-Cnt@{get\-Out\-Cnt}}
\index{get\-Out\-Cnt@{get\-Out\-Cnt}!Modbus Buffer Management@{Modbus Buffer Management}}
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number of outcoming messages
Get transmitted messages counter value This can be useful to diagnose communication.
\begin{DoxyReturn}{Returns}
transmitted messages counter
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Definition at line 374 of file Modbus\-Rtu.\-h.
\hypertarget{group__buffer_ga2f39717d957a929af488c9120488fcdc}{\index{Modbus Buffer Management@{Modbus Buffer Management}!get\-State@{get\-State}}
\index{get\-State@{get\-State}!Modbus Buffer Management@{Modbus Buffer Management}}
\subsubsection[{get\-State}]{\setlength{\rightskip}{0pt plus 5cm}uint8\-\_\-t Modbus\-::get\-State (
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Get modbus master state
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Definition at line 396 of file Modbus\-Rtu.\-h.

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\hypertarget{group__discrete}{\section{Modbus Function Codes for Discrete Coils/\-Inputs}
\label{group__discrete}\index{Modbus Function Codes for Discrete Coils/\-Inputs@{Modbus Function Codes for Discrete Coils/\-Inputs}}
}
\subsection{Detailed Description}

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\hypertarget{group__loop}{\section{Modbus Object Management}
\label{group__loop}\index{Modbus Object Management@{Modbus Object Management}}
}
\subsection*{Functions}
\begin{DoxyCompactItemize}
\item
boolean \hyperlink{group__loop_gaf6dd413191ed8a833022046873e0a063}{Modbus\-::get\-Time\-Out\-State} ()
\begin{DoxyCompactList}\small\item\em get communication watch-\/dog timer state \end{DoxyCompactList}\item
int8\-\_\-t \hyperlink{group__loop_ga19398cabed57b6d085d014af6c149f54}{Modbus\-::query} (\hyperlink{structmodbus__t}{modbus\-\_\-t} telegram)
\begin{DoxyCompactList}\small\item\em only for master \end{DoxyCompactList}\item
int8\-\_\-t \hyperlink{group__loop_ga53bde78490c1cd8e3c070a676bdcfb0d}{Modbus\-::poll} ()
\begin{DoxyCompactList}\small\item\em cyclic poll for master \end{DoxyCompactList}\item
int8\-\_\-t \hyperlink{group__loop_gab3ef20562fc8cee14fc85f7e276890b5}{Modbus\-::poll} (uint16\-\_\-t $\ast$regs, uint8\-\_\-t u8size)
\begin{DoxyCompactList}\small\item\em cyclic poll for slave \end{DoxyCompactList}\end{DoxyCompactItemize}
\subsection{Detailed Description}
\subsection{Function Documentation}
\hypertarget{group__loop_gaf6dd413191ed8a833022046873e0a063}{\index{Modbus Object Management@{Modbus Object Management}!get\-Time\-Out\-State@{get\-Time\-Out\-State}}
\index{get\-Time\-Out\-State@{get\-Time\-Out\-State}!Modbus Object Management@{Modbus Object Management}}
\subsubsection[{get\-Time\-Out\-State}]{\setlength{\rightskip}{0pt plus 5cm}boolean Modbus\-::get\-Time\-Out\-State (
\begin{DoxyParamCaption}
{}
\end{DoxyParamCaption}
)}}\label{group__loop_gaf6dd413191ed8a833022046873e0a063}
get communication watch-\/dog timer state
Return communication Watchdog state. It could be usefull to reset outputs if the watchdog is fired.
\begin{DoxyReturn}{Returns}
T\-R\-U\-E if millis() $>$ u32time\-Out
\end{DoxyReturn}
Definition at line 350 of file Modbus\-Rtu.\-h.
\hypertarget{group__loop_ga53bde78490c1cd8e3c070a676bdcfb0d}{\index{Modbus Object Management@{Modbus Object Management}!poll@{poll}}
\index{poll@{poll}!Modbus Object Management@{Modbus Object Management}}
\subsubsection[{poll}]{\setlength{\rightskip}{0pt plus 5cm}int8\-\_\-t Modbus\-::poll (
\begin{DoxyParamCaption}
{}
\end{DoxyParamCaption}
)}}\label{group__loop_ga53bde78490c1cd8e3c070a676bdcfb0d}
cyclic poll for master
$\ast$$\ast$$\ast$ Only for \hyperlink{class_modbus}{Modbus} Master $\ast$$\ast$$\ast$ This method checks if there is any incoming answer if pending. If there is no answer, it would change Master state to C\-O\-M\-\_\-\-I\-D\-L\-E. This method must be called only at loop section. Avoid any delay() function.
Any incoming data would be redirected to au16regs pointer, as defined in its \hyperlink{structmodbus__t}{modbus\-\_\-t} query telegram.
nothing \begin{DoxyReturn}{Returns}
errors counter
\end{DoxyReturn}
Definition at line 513 of file Modbus\-Rtu.\-h.
\hypertarget{group__loop_gab3ef20562fc8cee14fc85f7e276890b5}{\index{Modbus Object Management@{Modbus Object Management}!poll@{poll}}
\index{poll@{poll}!Modbus Object Management@{Modbus Object Management}}
\subsubsection[{poll}]{\setlength{\rightskip}{0pt plus 5cm}int8\-\_\-t Modbus\-::poll (
\begin{DoxyParamCaption}
\item[{uint16\-\_\-t $\ast$}]{regs, }
\item[{uint8\-\_\-t}]{u8size}
\end{DoxyParamCaption}
)}}\label{group__loop_gab3ef20562fc8cee14fc85f7e276890b5}
cyclic poll for slave
$\ast$$\ast$$\ast$ Only for \hyperlink{class_modbus}{Modbus} Slave $\ast$$\ast$$\ast$ This method checks if there is any incoming query Afterwards, it would shoot a validation routine plus a register query Avoid any delay() function !!!! After a successful frame between the Master and the Slave, the time-\/out timer is reset.
\begin{DoxyParams}{Parameters}
{\em $\ast$regs} & register table for communication exchange \\
\hline
{\em u8size} & size of the register table \\
\hline
\end{DoxyParams}
\begin{DoxyReturn}{Returns}
0 if no query, 1..4 if communication error, $>$4 if correct query processed
\end{DoxyReturn}
Definition at line 588 of file Modbus\-Rtu.\-h.
\hypertarget{group__loop_ga19398cabed57b6d085d014af6c149f54}{\index{Modbus Object Management@{Modbus Object Management}!query@{query}}
\index{query@{query}!Modbus Object Management@{Modbus Object Management}}
\subsubsection[{query}]{\setlength{\rightskip}{0pt plus 5cm}int8\-\_\-t Modbus\-::query (
\begin{DoxyParamCaption}
\item[{{\bf modbus\-\_\-t}}]{telegram}
\end{DoxyParamCaption}
)}}\label{group__loop_ga19398cabed57b6d085d014af6c149f54}
only for master
$\ast$$\ast$$\ast$ Only \hyperlink{class_modbus}{Modbus} Master $\ast$$\ast$$\ast$ Generate a query to an slave with a \hyperlink{structmodbus__t}{modbus\-\_\-t} telegram structure The Master must be in C\-O\-M\-\_\-\-I\-D\-L\-E mode. After it, its state would be C\-O\-M\-\_\-\-W\-A\-I\-T\-I\-N\-G. This method has to be called only in loop() section.
\begin{DoxySeeAlso}{See Also}
\hyperlink{structmodbus__t}{modbus\-\_\-t}
\end{DoxySeeAlso}
\begin{DoxyParams}{Parameters}
{\em \hyperlink{structmodbus__t}{modbus\-\_\-t}} & modbus telegram structure (id, fct, ...)\\
\hline
\end{DoxyParams}
\begin{DoxyRefDesc}{Todo}
\item[\hyperlink{todo__todo000001}{Todo}]finish function 15 \end{DoxyRefDesc}
Definition at line 425 of file Modbus\-Rtu.\-h.

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\hypertarget{group__register}{\section{Modbus Function Codes for Holding/\-Input Registers}
\label{group__register}\index{Modbus Function Codes for Holding/\-Input Registers@{Modbus Function Codes for Holding/\-Input Registers}}
}
\subsection{Detailed Description}

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\hypertarget{group__setup}{\section{Modbus Object Instantiation/\-Initialization}
\label{group__setup}\index{Modbus Object Instantiation/\-Initialization@{Modbus Object Instantiation/\-Initialization}}
}
\subsection*{Functions}
\begin{DoxyCompactItemize}
\item
\hyperlink{group__setup_ga101809cdd4734537bab58dc315a840b4}{Modbus\-::\-Modbus} ()
\begin{DoxyCompactList}\small\item\em Default Constructor for Master through Serial. \end{DoxyCompactList}\item
void \hyperlink{group__setup_ga475a4fa0fac491307b10c4529ad6d2a0}{Modbus\-::begin} (long u32speed)
\begin{DoxyCompactList}\small\item\em Initialize class object. \end{DoxyCompactList}\item
void \hyperlink{group__setup_ga9bd497e97ac1777d4f0d4171078d60e0}{Modbus\-::set\-I\-D} (uint8\-\_\-t u8id)
\begin{DoxyCompactList}\small\item\em write new I\-D for the slave \end{DoxyCompactList}\item
uint8\-\_\-t \hyperlink{group__setup_ga6449894306ff8cc5d4caff09b1b0d1ce}{Modbus\-::get\-I\-D} ()
\begin{DoxyCompactList}\small\item\em get slave I\-D between 1 and 247 \end{DoxyCompactList}\item
void \hyperlink{group__setup_gaf828190ebe24efb1b3b1957429f3872e}{Modbus\-::set\-Time\-Out} (uint16\-\_\-t u16timeout)
\begin{DoxyCompactList}\small\item\em write communication watch-\/dog timer \end{DoxyCompactList}\end{DoxyCompactItemize}
\subsection{Detailed Description}
\subsection{Function Documentation}
\hypertarget{group__setup_ga475a4fa0fac491307b10c4529ad6d2a0}{\index{Modbus Object Instantiation/\-Initialization@{Modbus Object Instantiation/\-Initialization}!begin@{begin}}
\index{begin@{begin}!Modbus Object Instantiation/Initialization@{Modbus Object Instantiation/\-Initialization}}
\subsubsection[{begin}]{\setlength{\rightskip}{0pt plus 5cm}void Modbus\-::begin (
\begin{DoxyParamCaption}
\item[{long}]{u32speed}
\end{DoxyParamCaption}
)}}\label{group__setup_ga475a4fa0fac491307b10c4529ad6d2a0}
Initialize class object.
Sets up the serial port using specified baud rate. Call once class has been instantiated, typically within setup().
\begin{DoxySeeAlso}{See Also}
\href{http://arduino.cc/en/Serial/Begin#.Uy4CJ6aKlHY}{\tt http\-://arduino.\-cc/en/\-Serial/\-Begin\#.\-Uy4\-C\-J6a\-Kl\-H\-Y}
\end{DoxySeeAlso}
\begin{DoxyParams}{Parameters}
{\em speed} & baud rate, in standard increments (300..115200) \\
\hline
{\em config} & data frame settings (data length, parity and stop bits) \\
\hline
\end{DoxyParams}
Definition at line 250 of file Modbus\-Rtu.\-h.
\hypertarget{group__setup_ga6449894306ff8cc5d4caff09b1b0d1ce}{\index{Modbus Object Instantiation/\-Initialization@{Modbus Object Instantiation/\-Initialization}!get\-I\-D@{get\-I\-D}}
\index{get\-I\-D@{get\-I\-D}!Modbus Object Instantiation/Initialization@{Modbus Object Instantiation/\-Initialization}}
\subsubsection[{get\-I\-D}]{\setlength{\rightskip}{0pt plus 5cm}uint8\-\_\-t Modbus\-::get\-I\-D (
\begin{DoxyParamCaption}
{}
\end{DoxyParamCaption}
)}}\label{group__setup_ga6449894306ff8cc5d4caff09b1b0d1ce}
get slave I\-D between 1 and 247
Method to read current slave I\-D address.
\begin{DoxyReturn}{Returns}
u8id current slave address between 1 and 247
\end{DoxyReturn}
Definition at line 323 of file Modbus\-Rtu.\-h.
\hypertarget{group__setup_ga101809cdd4734537bab58dc315a840b4}{\index{Modbus Object Instantiation/\-Initialization@{Modbus Object Instantiation/\-Initialization}!Modbus@{Modbus}}
\index{Modbus@{Modbus}!Modbus Object Instantiation/Initialization@{Modbus Object Instantiation/\-Initialization}}
\subsubsection[{Modbus}]{\setlength{\rightskip}{0pt plus 5cm}Modbus\-::\-Modbus (
\begin{DoxyParamCaption}
{}
\end{DoxyParamCaption}
)}}\label{group__setup_ga101809cdd4734537bab58dc315a840b4}
Default Constructor for Master through Serial.
Definition at line 204 of file Modbus\-Rtu.\-h.
\hypertarget{group__setup_ga9bd497e97ac1777d4f0d4171078d60e0}{\index{Modbus Object Instantiation/\-Initialization@{Modbus Object Instantiation/\-Initialization}!set\-I\-D@{set\-I\-D}}
\index{set\-I\-D@{set\-I\-D}!Modbus Object Instantiation/Initialization@{Modbus Object Instantiation/\-Initialization}}
\subsubsection[{set\-I\-D}]{\setlength{\rightskip}{0pt plus 5cm}void Modbus\-::set\-I\-D (
\begin{DoxyParamCaption}
\item[{uint8\-\_\-t}]{u8id}
\end{DoxyParamCaption}
)}}\label{group__setup_ga9bd497e97ac1777d4f0d4171078d60e0}
write new I\-D for the slave
Method to write a new slave I\-D address.
\begin{DoxyParams}{Parameters}
{\em u8id} & new slave address between 1 and 247 \\
\hline
\end{DoxyParams}
Definition at line 310 of file Modbus\-Rtu.\-h.
\hypertarget{group__setup_gaf828190ebe24efb1b3b1957429f3872e}{\index{Modbus Object Instantiation/\-Initialization@{Modbus Object Instantiation/\-Initialization}!set\-Time\-Out@{set\-Time\-Out}}
\index{set\-Time\-Out@{set\-Time\-Out}!Modbus Object Instantiation/Initialization@{Modbus Object Instantiation/\-Initialization}}
\subsubsection[{set\-Time\-Out}]{\setlength{\rightskip}{0pt plus 5cm}void Modbus\-::set\-Time\-Out (
\begin{DoxyParamCaption}
\item[{uint16\-\_\-t}]{u16time\-Out}
\end{DoxyParamCaption}
)}}\label{group__setup_gaf828190ebe24efb1b3b1957429f3872e}
write communication watch-\/dog timer
Initialize time-\/out parameter.
Call once class has been instantiated, typically within setup(). The time-\/out timer is reset each time that there is a successful communication between Master and Slave. It works for both.
\begin{DoxyParams}{Parameters}
{\em time-\/out} & value (ms) \\
\hline
\end{DoxyParams}
Definition at line 338 of file Modbus\-Rtu.\-h.

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\section{Modules}
Here is a list of all modules\-:\begin{DoxyCompactList}
\item \contentsline{section}{Modbus Object Instantiation/\-Initialization}{\pageref{group__setup}}{}
\item \contentsline{section}{Modbus Object Management}{\pageref{group__loop}}{}
\item \contentsline{section}{Modbus Buffer Management}{\pageref{group__buffer}}{}
\item \contentsline{section}{Modbus Function Codes for Discrete Coils/\-Inputs}{\pageref{group__discrete}}{}
\item \contentsline{section}{Modbus Function Codes for Holding/\-Input Registers}{\pageref{group__register}}{}
\end{DoxyCompactList}

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\hypertarget{structmodbus__t}{\section{modbus\-\_\-t Struct Reference}
\label{structmodbus__t}\index{modbus\-\_\-t@{modbus\-\_\-t}}
}
Master query structure\-: This includes all the necessary fields to make the Master generate a \hyperlink{class_modbus}{Modbus} query. A Master may keep several of these structures and send them cyclically or use them according to program needs.
{\ttfamily \#include $<$Modbus\-Rtu.\-h$>$}
\subsection*{Public Attributes}
\begin{DoxyCompactItemize}
\item
uint8\-\_\-t \hyperlink{structmodbus__t_af78ad11f93e63022a1c279de7206358c}{u8id}
\item
uint8\-\_\-t \hyperlink{structmodbus__t_a57d1630d4548e5d50d79e206a48b09bc}{u8fct}
\item
uint16\-\_\-t \hyperlink{structmodbus__t_a224ead9ff72467696e94fba9cf06bd3c}{u16\-Reg\-Add}
\item
uint16\-\_\-t \hyperlink{structmodbus__t_a5b9cee9c1a9415d927543f6cf054eb43}{u16\-Coils\-No}
\item
uint16\-\_\-t $\ast$ \hyperlink{structmodbus__t_a36212dd6316cbffb8ea31b2a2f5ae1be}{au16reg}
\end{DoxyCompactItemize}
\subsection{Detailed Description}
Master query structure\-: This includes all the necessary fields to make the Master generate a \hyperlink{class_modbus}{Modbus} query. A Master may keep several of these structures and send them cyclically or use them according to program needs.
Definition at line 48 of file Modbus\-Rtu.\-h.
\subsection{Member Data Documentation}
\hypertarget{structmodbus__t_a36212dd6316cbffb8ea31b2a2f5ae1be}{\index{modbus\-\_\-t@{modbus\-\_\-t}!au16reg@{au16reg}}
\index{au16reg@{au16reg}!modbus_t@{modbus\-\_\-t}}
\subsubsection[{au16reg}]{\setlength{\rightskip}{0pt plus 5cm}uint16\-\_\-t$\ast$ modbus\-\_\-t\-::au16reg}}\label{structmodbus__t_a36212dd6316cbffb8ea31b2a2f5ae1be}
Pointer to memory image in master
Definition at line 53 of file Modbus\-Rtu.\-h.
\hypertarget{structmodbus__t_a5b9cee9c1a9415d927543f6cf054eb43}{\index{modbus\-\_\-t@{modbus\-\_\-t}!u16\-Coils\-No@{u16\-Coils\-No}}
\index{u16\-Coils\-No@{u16\-Coils\-No}!modbus_t@{modbus\-\_\-t}}
\subsubsection[{u16\-Coils\-No}]{\setlength{\rightskip}{0pt plus 5cm}uint16\-\_\-t modbus\-\_\-t\-::u16\-Coils\-No}}\label{structmodbus__t_a5b9cee9c1a9415d927543f6cf054eb43}
Number of coils or registers to access
Definition at line 52 of file Modbus\-Rtu.\-h.
\hypertarget{structmodbus__t_a224ead9ff72467696e94fba9cf06bd3c}{\index{modbus\-\_\-t@{modbus\-\_\-t}!u16\-Reg\-Add@{u16\-Reg\-Add}}
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\subsubsection[{u16\-Reg\-Add}]{\setlength{\rightskip}{0pt plus 5cm}uint16\-\_\-t modbus\-\_\-t\-::u16\-Reg\-Add}}\label{structmodbus__t_a224ead9ff72467696e94fba9cf06bd3c}
Address of the first register to access at slave/s
Definition at line 51 of file Modbus\-Rtu.\-h.
\hypertarget{structmodbus__t_a57d1630d4548e5d50d79e206a48b09bc}{\index{modbus\-\_\-t@{modbus\-\_\-t}!u8fct@{u8fct}}
\index{u8fct@{u8fct}!modbus_t@{modbus\-\_\-t}}
\subsubsection[{u8fct}]{\setlength{\rightskip}{0pt plus 5cm}uint8\-\_\-t modbus\-\_\-t\-::u8fct}}\label{structmodbus__t_a57d1630d4548e5d50d79e206a48b09bc}
Function code\-: 1, 2, 3, 4, 5, 6, 15 or 16
Definition at line 50 of file Modbus\-Rtu.\-h.
\hypertarget{structmodbus__t_af78ad11f93e63022a1c279de7206358c}{\index{modbus\-\_\-t@{modbus\-\_\-t}!u8id@{u8id}}
\index{u8id@{u8id}!modbus_t@{modbus\-\_\-t}}
\subsubsection[{u8id}]{\setlength{\rightskip}{0pt plus 5cm}uint8\-\_\-t modbus\-\_\-t\-::u8id}}\label{structmodbus__t_af78ad11f93e63022a1c279de7206358c}
Slave address between 1 and 247. 0 means broadcast
Definition at line 49 of file Modbus\-Rtu.\-h.
The documentation for this struct was generated from the following file\-:\begin{DoxyCompactItemize}
\item
\hyperlink{_modbus_rtu_8h}{Modbus\-Rtu.\-h}\end{DoxyCompactItemize}

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Member \hyperlink{group__loop_ga19398cabed57b6d085d014af6c149f54}{Modbus\-:\-:query} (\hyperlink{structmodbus__t}{modbus\-\_\-t} telegram)]finish function 15
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/**
* Modbus slave example 3:
* The purpose of this example is to link a data array
* from the Arduino to an external device through RS485.
*
* Recommended Modbus Master: QModbus
* http://qmodbus.sourceforge.net/
*/
#include <ModbusRtu.h>
// assign the Arduino pin that must be connected to RE-DE RS485 transceiver
#define TXEN 4
// data array for modbus network sharing
uint16_t au16data[16] = {
3, 1415, 9265, 4, 2, 7182, 28182, 8, 0, 0, 0, 0, 0, 0, 1, -1 };
/**
* Modbus object declaration
* u8id : node id = 0 for master, = 1..247 for slave
* port : serial port
* u8txenpin : 0 for RS-232 and USB-FTDI
* or any pin number > 1 for RS-485
*/
Modbus slave(1,Serial,TXEN); // this is slave @1 and RS-485
void setup() {
Serial.begin( 19200 ); // baud-rate at 19200
slave.start();
}
void loop() {
slave.poll( au16data, 16 );
}

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/**
* Modbus master example 2:
* The purpose of this example is to query several sets of data
* from an external Modbus slave device.
* The link media can be USB or RS232.
*
* Recommended Modbus slave:
* diagslave http://www.modbusdriver.com/diagslave.html
*
* In a Linux box, run
* "./diagslave /dev/ttyUSB0 -b 19200 -d 8 -s 1 -p none -m rtu -a 1"
* This is:
* serial port /dev/ttyUSB0 at 19200 baud 8N1
* RTU mode and address @1
*/
#include <ModbusRtu.h>
uint16_t au16data[16]; //!< data array for modbus network sharing
uint8_t u8state; //!< machine state
uint8_t u8query; //!< pointer to message query
/**
* Modbus object declaration
* u8id : node id = 0 for master, = 1..247 for slave
* port : serial port
* u8txenpin : 0 for RS-232 and USB-FTDI
* or any pin number > 1 for RS-485
*/
Modbus master(0,Serial,0); // this is master and RS-232 or USB-FTDI
/**
* This is an structe which contains a query to an slave device
*/
modbus_t telegram[2];
unsigned long u32wait;
void setup() {
// telegram 0: read registers
telegram[0].u8id = 1; // slave address
telegram[0].u8fct = 3; // function code (this one is registers read)
telegram[0].u16RegAdd = 0; // start address in slave
telegram[0].u16CoilsNo = 4; // number of elements (coils or registers) to read
telegram[0].au16reg = au16data; // pointer to a memory array in the Arduino
// telegram 1: write a single register
telegram[1].u8id = 1; // slave address
telegram[1].u8fct = 6; // function code (this one is write a single register)
telegram[1].u16RegAdd = 4; // start address in slave
telegram[1].u16CoilsNo = 1; // number of elements (coils or registers) to read
telegram[1].au16reg = au16data+4; // pointer to a memory array in the Arduino
Serial.begin( 19200 ); // baud-rate at 19200
master.start();
master.setTimeOut( 5000 ); // if there is no answer in 5000 ms, roll over
u32wait = millis() + 1000;
u8state = u8query = 0;
}
void loop() {
switch( u8state ) {
case 0:
if (millis() > u32wait) u8state++; // wait state
break;
case 1:
master.query( telegram[u8query] ); // send query (only once)
u8state++;
u8query++;
if (u8query > 2) u8query = 0;
break;
case 2:
master.poll(); // check incoming messages
if (master.getState() == COM_IDLE) {
u8state = 0;
u32wait = millis() + 1000;
}
break;
}
au16data[4] = analogRead( 0 );
}

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/**
* Modbus slave example 2:
* The purpose of this example is to link the Arduino digital and analog
* pins to an external device.
*
* Recommended Modbus Master: QModbus
* http://qmodbus.sourceforge.net/
*
* Editado al español por LuxARTS
*/
//Incluye la librería del protocolo Modbus
#include <ModbusRtu.h>
#define ID 1
//Crear instancia
Modbus slave(ID, Serial, 0); //ID del nodo. 0 para el master, 1-247 para esclavo
//Puerto serie (0 = TX: 1 - RX: 0)
//Protocolo serie. 0 para RS-232 + USB (default), cualquier pin mayor a 1 para RS-485
boolean led;
int8_t state = 0;
unsigned long tempus;
uint16_t au16data[9]; //La tabla de registros que se desea compartir por la red
/*********************************************************
Configuración del programa
*********************************************************/
void setup() {
io_setup(); //configura las entradas y salidas
Serial.begin(19200); //Abre la comunicación como esclavo
slave.start();
tempus = millis() + 100; //Guarda el tiempo actual + 100ms
digitalWrite(13, HIGH ); //Prende el led del pin 13 (el de la placa)
}
/*********************************************************
Inicio del programa
*********************************************************/
void loop() {
//Comprueba el buffer de entrada
state = slave.poll( au16data, 9 ); //Parámetros: Tabla de registros para el intercambio de info
// Tamaño de la tabla de registros
//Devuelve 0 si no hay pedido de datos
//Devuelve 1 al 4 si hubo error de comunicación
//Devuelve mas de 4 si se procesó correctamente el pedido
if (state > 4) { //Si es mayor a 4 = el pedido fué correcto
tempus = millis() + 50; //Tiempo actual + 50ms
digitalWrite(13, HIGH);//Prende el led
}
if (millis() > tempus) digitalWrite(13, LOW );//Apaga el led 50ms después
//Actualiza los pines de Arduino con la tabla de Modbus
io_poll();
}
/**
* pin maping:
* 2 - digital input
* 3 - digital input
* 4 - digital input
* 5 - digital input
* 6 - digital output
* 7 - digital output
* 8 - digital output
* 9 - digital output
* 10 - analog output
* 11 - analog output
* 14 - analog input
* 15 - analog input
*
* pin 13 reservado para ver el estado de la comunicación
*/
void io_setup() {
pinMode(2, INPUT);
pinMode(3, INPUT);
pinMode(4, INPUT);
pinMode(5, INPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
pinMode(13, OUTPUT);
digitalWrite(6, LOW );
digitalWrite(7, LOW );
digitalWrite(8, LOW );
digitalWrite(9, LOW );
digitalWrite(13, HIGH ); //Led del pin 13 de la placa
analogWrite(10, 0 ); //PWM 0%
analogWrite(11, 0 ); //PWM 0%
}
/*********************************************************
Enlaza la tabla de registros con los pines
*********************************************************/
void io_poll() {
// digital inputs -> au16data[0]
// Lee las entradas digitales y las guarda en bits de la primera variable del vector
// (es lo mismo que hacer una máscara)
bitWrite( au16data[0], 0, digitalRead( 2 )); //Lee el pin 2 de Arduino y lo guarda en el bit 0 de la variable au16data[0]
bitWrite( au16data[0], 1, digitalRead( 3 ));
bitWrite( au16data[0], 2, digitalRead( 4 ));
bitWrite( au16data[0], 3, digitalRead( 5 ));
// digital outputs -> au16data[1]
// Lee los bits de la segunda variable y los pone en las salidas digitales
digitalWrite( 6, bitRead( au16data[1], 0 )); //Lee el bit 0 de la variable au16data[1] y lo pone en el pin 6 de Arduino
digitalWrite( 7, bitRead( au16data[1], 1 ));
digitalWrite( 8, bitRead( au16data[1], 2 ));
digitalWrite( 9, bitRead( au16data[1], 3 ));
// Cambia el valor del PWM
analogWrite( 10, au16data[2] ); //El valor de au16data[2] se escribe en la salida de PWM del pin 10 de Arduino. (siendo 0=0% y 255=100%)
analogWrite( 11, au16data[3] );
// Lee las entradas analógicas (ADC)
au16data[4] = analogRead( 0 ); //El valor analógico leido en el pin A0 se guarda en au16data[4]. (siendo 0=0v y 1023=5v)
au16data[5] = analogRead( 1 );
// Diagnóstico de la comunicación (para debug)
au16data[6] = slave.getInCnt(); //Devuelve cuantos mensajes se recibieron
au16data[7] = slave.getOutCnt(); //Devuelve cuantos mensajes se transmitieron
au16data[8] = slave.getErrCnt(); //Devuelve cuantos errores hubieron
}

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/**
* Modbus master example 1:
* The purpose of this example is to query an array of data
* from an external Modbus slave device.
* The link media can be USB or RS232.
*
* Recommended Modbus slave:
* diagslave http://www.modbusdriver.com/diagslave.html
*
* In a Linux box, run
* "./diagslave /dev/ttyUSB0 -b 19200 -d 8 -s 1 -p none -m rtu -a 1"
* This is:
* serial port /dev/ttyUSB0 at 19200 baud 8N1
* RTU mode and address @1
*/
#include <ModbusRtu.h>
// data array for modbus network sharing
uint16_t au16data[16];
uint8_t u8state;
/**
* Modbus object declaration
* u8id : node id = 0 for master, = 1..247 for slave
* port : serial port
* u8txenpin : 0 for RS-232 and USB-FTDI
* or any pin number > 1 for RS-485
*/
Modbus master(0,Serial,0); // this is master and RS-232 or USB-FTDI
/**
* This is an structe which contains a query to an slave device
*/
modbus_t telegram;
unsigned long u32wait;
void setup() {
Serial.begin( 19200 ); // baud-rate at 19200
master.start();
master.setTimeOut( 2000 ); // if there is no answer in 2000 ms, roll over
u32wait = millis() + 1000;
u8state = 0;
}
void loop() {
switch( u8state ) {
case 0:
if (millis() > u32wait) u8state++; // wait state
break;
case 1:
telegram.u8id = 1; // slave address
telegram.u8fct = 3; // function code (this one is registers read)
telegram.u16RegAdd = 1; // start address in slave
telegram.u16CoilsNo = 4; // number of elements (coils or registers) to read
telegram.au16reg = au16data; // pointer to a memory array in the Arduino
master.query( telegram ); // send query (only once)
u8state++;
break;
case 2:
master.poll(); // check incoming messages
if (master.getState() == COM_IDLE) {
u8state = 0;
u32wait = millis() + 100;
}
break;
}
}

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/**
* Modbus slave example 1:
* The purpose of this example is to link a data array
* from the Arduino to an external device.
*
* Recommended Modbus Master: QModbus
* http://qmodbus.sourceforge.net/
*/
#include <ModbusRtu.h>
// data array for modbus network sharing
uint16_t au16data[16] = {
3, 1415, 9265, 4, 2, 7182, 28182, 8, 0, 0, 0, 0, 0, 0, 1, -1 };
/**
* Modbus object declaration
* u8id : node id = 0 for master, = 1..247 for slave
* port : serial port
* u8txenpin : 0 for RS-232 and USB-FTDI
* or any pin number > 1 for RS-485
*/
Modbus slave(1,Serial,0); // this is slave @1 and RS-232 or USB-FTDI
void setup() {
Serial.begin( 19200 ); // baud-rate at 19200
slave.start();
}
void loop() {
slave.poll( au16data, 16 );
}

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/**
* Modbus slave example 2:
* The purpose of this example is to link a data array
* from the Arduino to an external device.
*
* Recommended Modbus Master: modpoll
* http://www.modbusdriver.com/modpoll.html
*/
#include <ModbusRtu.h>
// data array for modbus network sharing
uint16_t au16data[16] = {
3, 1415, 9265, 4, 2, 7182, 28182, 8, 0, 0, 0, 0, 0, 0, 1, -1 };
/**
* Modbus object declaration
* u8id : node id = 0 for master, = 1..247 for slave
* port : serial port
* u8txenpin : 0 for RS-232 and USB-FTDI
* or any pin number > 1 for RS-485
*/
Modbus slave(1,Serial,0); // this is slave @1 and RS-232 or USB-FTDI
void setup() {
Serial.begin( 19200, SERIAL_8E1 ); // 19200 baud, 8-bits, even, 1-bit stop
slave.start();
}
void loop() {
slave.poll( au16data, 16 );
}

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/**
* Modbus master example 2:
* The purpose of this example is to query an array of data
* from an external Modbus slave device.
* This example is similar to "simple_master", but this example
* allows you to use software serial instead of hardware serial
* in case that you want to use D1 & D2 for other purposes.
* The link media can be USB or RS232.
The circuit:
* software serial rx(D3) connect to tx pin of another device
* software serial tx(D4) connect to rx pin of another device
* In this example, we will use two important methods so that we can use
* software serial.
*
* 1. Modbus::Modbus(uint8_t u8id)
* This is a constructor for a Master/Slave through USB/RS232C via software serial
* This constructor only specifies u8id (node address) and should be only
* used if you want to use software serial instead of hardware serial.
* This method is called if you create a ModBus object with only on parameter "u8id"
* u8id is the node address of the arduino that will be programmed on,
* 0 for master and 1..247 for slave
* for example: Modbus master(0);
* If you use this constructor you have to begin ModBus object by
* using "void Modbus::begin(SoftwareSerial *softPort, long u32speed)".
*
* 2. void Modbus::begin(SoftwareSerial *sPort, long u32speed)
* Initialize class object.
* This is the method you have to use if you construct the ModBus object by using
* Modbus::Modbus(uint8_t u8id) in order to use software serial and to avoid problems.
* You have to create a SoftwareSerial object on your own, as shown in the example.
* sPort is a pointer to your SoftwareSerial object, u32speed is the baud rate, in
* standard increments (300..115200)
created long time ago
by smarmengol
modified 29 July 2016
by Helium6072
This example code is in the public domain.
*/
#include <ModbusRtu.h>
#include <SoftwareSerial.h>
// data array for modbus network sharing
uint16_t au16data[16];
uint8_t u8state;
SoftwareSerial mySerial(3, 5);//Create a SoftwareSerial object so that we can use software serial. Search "software serial" on Arduino.cc to find out more details.
/**
* Modbus object declaration
* u8id : node id = 0 for master, = 1..247 for slave
* port : serial port
* u8txenpin : 0 for RS-232 and USB-FTDI
* or any pin number > 1 for RS-485
*/
Modbus master(0, mySerial); // this is master and RS-232 or USB-FTDI via software serial
/**
* This is an structe which contains a query to an slave device
*/
modbus_t telegram;
unsigned long u32wait;
void setup() {
mySerial.begin(9600);//use the hardware serial if you want to connect to your computer via usb cable, etc.
master.start(); // start the ModBus object.
master.setTimeOut( 2000 ); // if there is no answer in 2000 ms, roll over
u32wait = millis() + 1000;
u8state = 0;
}
void loop() {
switch( u8state ) {
case 0:
if (millis() > u32wait) u8state++; // wait state
break;
case 1:
telegram.u8id = 104; // slave address
telegram.u8fct = 4; // function code (this one is registers read)
telegram.u16RegAdd = 3; // start address in slave
telegram.u16CoilsNo = 1; // number of elements (coils or registers) to read
telegram.au16reg = au16data; // pointer to a memory array in the Arduino
master.query( telegram ); // send query (only once)
u8state++;
break;
case 2:
master.poll(); // check incoming messages
if (master.getState() == COM_IDLE) {
u8state = 0;
u32wait = millis() + 2000;
Serial.println(au16data[0]);//Or do something else!
}
break;
}
}

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#######################################
# Syntax Coloring Map For Modbus-Master-Slave
#######################################
#######################################
# Datatypes (KEYWORD1)
#######################################
modbus_t KEYWORD1
#######################################
# Methods and Functions (KEYWORD2)
#######################################
begin KEYWORD2
poll KEYWORD2
getInCnt KEYWORD2
getOutCnt KEYWORD2
getErrCnt KEYWORD2
getID KEYWORD2
getState KEYWORD2
query KEYWORD2
setTimeOut KEYWORD2
#######################################
# Instances (KEYWORD2)
#######################################
Modbus KEYWORD2
#######################################
# Constants (LITERAL1)
#######################################

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pip

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Metadata-Version: 2.1
Name: minimalmodbus
Version: 2.1.1
Summary: Easy-to-use Modbus RTU and Modbus ASCII implementation for Python
Keywords: minimalmodbus,modbus,modbus-serial,modbus-RTU,modbus-ASCII
Author: Jonas Berg
Requires-Python: >=3.8
Description-Content-Type: text/x-rst
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: Intended Audience :: Information Technology
Classifier: Intended Audience :: Science/Research
Classifier: Intended Audience :: Manufacturing
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Natural Language :: English
Classifier: Operating System :: OS Independent
Classifier: Operating System :: POSIX
Classifier: Operating System :: Microsoft :: Windows
Classifier: Operating System :: MacOS :: MacOS X
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Topic :: Communications
Classifier: Topic :: Home Automation
Classifier: Topic :: Scientific/Engineering
Classifier: Topic :: Software Development :: Libraries
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: System :: Hardware :: Hardware Drivers
Classifier: Topic :: Terminals :: Serial
Requires-Dist: pyserial>=3.0
Project-URL: Changelog, https://github.com/pyhys/minimalmodbus/blob/master/HISTORY.rst
Project-URL: Documentation, https://minimalmodbus.readthedocs.io
Project-URL: Homepage, https://github.com/pyhys/minimalmodbus
===============================
MinimalModbus
===============================
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:target: https://pypi.org/project/minimalmodbus/
:alt: PyPI page link
Easy-to-use Modbus RTU and Modbus ASCII implementation for Python.
Web resources
-------------
* **Documentation**: https://minimalmodbus.readthedocs.io
* Source code on **GitHub**: https://github.com/pyhys/minimalmodbus
* Python package index (PyPI) with download: https://pypi.org/project/minimalmodbus/
Other web pages:
* Readthedocs project page: https://readthedocs.org/projects/minimalmodbus/
* codecov.io project page: https://codecov.io/github/pyhys/minimalmodbus
Obsolete web pages:
* Old Travis CI build status page: https://travis-ci.org/pyhys/minimalmodbus
* Old Sourceforge documentation page: http://minimalmodbus.sourceforge.net/
* Old Sourceforge project page: https://sourceforge.net/projects/minimalmodbus
* Old Sourceforge repository: https://sourceforge.net/p/minimalmodbus/code/HEAD/tree/
Features
--------
MinimalModbus is an easy-to-use Python module for talking to instruments (slaves)
from a computer (master) using the Modbus protocol, and is intended to be running on the master.
The only dependence is the pySerial module (also pure Python).
There are convenience functions to handle floats, strings and long integers
(in different byte orders).
This software supports the 'Modbus RTU' and 'Modbus ASCII' serial communication
versions of the protocol, and is intended for use on Linux, OS X and Windows platforms.
It is open source, and has the Apache License, Version 2.0.
For Python 3.8 and later. Tested with Python 3.8, 3.9, 3.10, 3.11 and 3.12.
This package uses semantic versioning.

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