TCP_Write (FB)¶

FUNCTION_BLOCK TCP_Write EXTENDS CBM.ETrigTo

This function block serves to write data to the previously established connection given in hConnection. The content of the memory area indicated by pointer pData contains the data to be written. szSize defines the number of bytes to be written. When xDone is set to TRUE the data was written successfully.

The time out value has no effect at this function block.

InOut:

Scope	Name	Type	Comment	Inherited from
Input	xExecute	BOOL	Rising edge: Action starts Falling edge: Resets outputs If a falling edge occurs before the function block has completed its action, the outputs operate in the usual manner and are only reset if either the action is completed or in the event of an error. In this case, the corresponding output values (xDone, xError) are present at the outputs for exactly one cycle.	ETrigTo
	udiTimeOut	UDINT	Defines the time (µs) after which an FB (e.g. requiring an external acknowledgement) aborts operation due to a timeout with error message.	ETrigTo
Output	xDone	BOOL	TRUE: Action successfully completed	ETrigTo
	xBusy	BOOL	TRUE: Function block active	ETrigTo
	xError	BOOL	TRUE: Error occurred, function block aborts action FALSE: No error	ETrigTo
Input	hConnection	CAA.HANDLE
	szSize	CAA.SIZE
	pData	CAA.PVOID
Output	eError	ERROR