modbus_adu Struct Reference

Frame struct used internally and for raw ADU support. More...

#include <modbus.h>

Data Fields
uint16_t	trans_id
uint16_t	proto_id
uint16_t	length
uint8_t	unit_id
uint8_t	fc
uint8_t	data [CONFIG_MODBUS_BUFFER_SIZE - 4]
uint16_t	crc

Detailed Description

Frame struct used internally and for raw ADU support.

Field Documentation

crc

uint16_t modbus_adu::crc

RTU CRC

data

uint8_t modbus_adu::data[CONFIG_MODBUS_BUFFER_SIZE - 4]

Transaction Data

fc

uint8_t modbus_adu::fc

Function Code

length

uint16_t modbus_adu::length

Length of the data only (not the length of unit ID + PDU)

proto_id

uint16_t modbus_adu::proto_id

Protocol Identifier

trans_id

uint16_t modbus_adu::trans_id

Transaction Identifier

unit_id

uint8_t modbus_adu::unit_id

Unit Identifier

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The documentation for this struct was generated from the following file:

• include/modbus/modbus.h