mb_pdu_t Struct Reference

Represents a modbus Protocol Data Unit (PDU). More...

#include <modbus.h>

Data Fields
uint8_t	function_code
	Function code of the message.
uint8_t	data [MODBUS_MAX_PDU_DATA_SIZE]
	Data of the message.
uint8_t	length
	Number of bytes in the data field.

Detailed Description

Represents a modbus Protocol Data Unit (PDU).

Field Documentation

function_code

uint8_t mb_pdu_t::function_code

Function code of the message.

Valid values are 1 to 255, but 128 to 255 are reserved for exception responses.

length

uint8_t mb_pdu_t::length

Number of bytes in the data field.

Maximum is MODBUS_MAX_PDU_DATA_SIZE.

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

• include/modbus/modbus_core/modbus.h