ModbusServer (FB)¶

FUNCTION_BLOCK ModbusServer

InOut:

Scope	Name	Type	Initial	Comment
Input	`byUnitID`	`BYTE`		wPort: WORD:= 502; // Modbus server port - 502 is Modbus default
	`comPortSettings`	`ComSettings`		Comport Settings
	`pInputData`	POINTER TO WORD		Input Registers
	`pOutputData`	POINTER TO WORD		Holding Registers
	`uiInputDataSize`	`UINT`		Size in words of Input Register data area
	`uiOutputDataSize`	`UINT`		Size in words of Holding Register data area
	`xEnable`	`BOOL`	FALSE	Flag to enable execution - default is FALSE
	`xReset`	`BOOL`	FALSE	Flag to reset - default is FALSE
	`tTimeout`	`UDINT`	0	Modbus Write timeout, resets outputs if passed
	`EOFDetectionTimeout`	`UDINT`	0	Timeout for end of frame detection (in micro-seconds!), if not set the default of (3.5 char times is used)
Output	`xError`	`BOOL`	FALSE

Properties:

IsComPortValid

Structure: