modbus_adu Struct Reference

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

#include <modbus.h>

Data Fields
uint16_t	trans_id
	Transaction Identifier.
uint16_t	proto_id
	Protocol Identifier.
uint16_t	length
	Length of the data only (not the length of unit ID + PDU)
uint8_t	unit_id
	Unit Identifier.
uint8_t	fc
	Function Code.
uint8_t	data [CONFIG_MODBUS_BUFFER_SIZE - 4]
	Transaction Data.
uint16_t	crc
	RTU 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:

• zephyr/modbus/modbus.h