TCP_ReadBuffer (FB)¶

FUNCTION_BLOCK TCP_ReadBuffer EXTENDS CBM.LTrig

Like TCP_Read this function block serves to read data from the previously established connection given in hConnection. As long as xEnable is TRUE the handle of the connection is valid. The function block returns the handle of the buffer containing the data. If xReady is TRUE, data has been read successfully and the handle of the buffer is valid. The buffer is passed on and not copied like at TCP_Read.

InOut:

Scope	Name	Type	Comment	Inherited from
Input	xEnable	BOOL	TRUE: Action starts FALSE: Action stops, outputs xDone, xBusy, xError are resetted	LTrig
Output	xDone	BOOL	TRUE: Action successfully completed	LTrig
	xBusy	BOOL	TRUE: Function block active	LTrig
	xError	BOOL	TRUE: Error occurred, function block aborts action FALSE: No error	LTrig
Input	hConnection	CAA.HANDLE
Output	eError	ERROR
	xReady	BOOL
	hBuffer	CAA.HANDLE