MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b

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MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b

Modbus-IDAMODBUS APPLICATION PROTOCOL SPECIFICATION V1.1bCONTENTS1Introduction......................................................................21

MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b 1.1Scope of this document.......................................................22Abbreviations.......................................................

..............23Context...........................................................................34General description............................... MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b

................................34.1Protocol description.........................................................34.2Data Encoding....................

MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b

............................................64.3MODBUS Data model............................................................64.4MODBUS Addressing mod

Modbus-IDAMODBUS APPLICATION PROTOCOL SPECIFICATION V1.1bCONTENTS1Introduction......................................................................21

MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b de Categories.........................................................105.1Public Function Code Definition............................................

.116Function codes descriptions......................................................126.101 (0x01) Read Coils........................................ MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b

................126.202 (0x02) Read Discrete Inputs..............................................136.303 (0x03) Read Holding Registers................

MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b

............................156.404 (0x04) Read Input Registers..............................................166.505 (0x05) Write Single Coil.........

Modbus-IDAMODBUS APPLICATION PROTOCOL SPECIFICATION V1.1bCONTENTS1Introduction......................................................................21

MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b Status (Serial Line only)..........................206.808 (0x08) Diagnostics (Serial Line only)....................................216.8.1Sub-functi

on codes supported by the serial line devices............226.8.2Example and state diagram..........................................246.911(OxOB)Get Co MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b

mm Event Counter (Serial Line only)........................256.112(0x0C)Get Comm Event Log (Serial Line only)............................266.1115(OxOF

MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b

)Write Multiple Coils.............................................296.1216(0x10)Write Multiple registers.........................................306.1

Modbus-IDAMODBUS APPLICATION PROTOCOL SPECIFICATION V1.1bCONTENTS1Introduction......................................................................21

MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b . 326.1521(0x15)Write File Record................................................346.1622(0x16)Mask Write Register...................................

...........366.1723(0x17)Read/Write Multiple registers....................................386.1824(0x18)Read FIFO Queue............................... MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b

...................416.1943 ( 0x2B) Encapsulated Interface Transport................................426.243/ 13 (0x2B / OxOD) CANopen General Referenc

MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b

e Request and Response

Modbus-IDAMODBUS APPLICATION PROTOCOL SPECIFICATION V1.1bCONTENTS1Introduction......................................................................21