Modbus Buffer Management

Functions
uint16_t	Modbus::getInCnt ()
	number of incoming messages More...
uint16_t	Modbus::getOutCnt ()
	number of outcoming messages More...
uint16_t	Modbus::getErrCnt ()
	error counter More...
uint8_t	Modbus::getState ()
uint8_t	Modbus::getLastError ()
	get last error message More...

Detailed Description

Function Documentation

uint16_t Modbus::getErrCnt

(

)

error counter

Get errors counter value This can be useful to diagnose communication.

Returns

errors counter

Definition at line 386 of file ModbusRtu.h.

uint16_t Modbus::getInCnt

(

)

number of incoming messages

Get input messages counter value This can be useful to diagnose communication.

Returns

input messages counter

Definition at line 362 of file ModbusRtu.h.

uint8_t Modbus::getLastError

(

)

get last error message

Get the last error in the protocol processor

NO_REPLY = 255 Time-out

Returns

EXC_FUNC_CODE = 1 Function code not available

EXC_ADDR_RANGE = 2 Address beyond available space for Modbus registers

EXC_REGS_QUANT = 3 Coils or registers number beyond the available space

Definition at line 409 of file ModbusRtu.h.

uint16_t Modbus::getOutCnt

(

)

number of outcoming messages

Get transmitted messages counter value This can be useful to diagnose communication.

Returns

transmitted messages counter

Definition at line 374 of file ModbusRtu.h.

uint8_t Modbus::getState

(

)

Get modbus master state

Returns

= 0 IDLE, = 1 WAITING FOR ANSWER

Definition at line 396 of file ModbusRtu.h.