TCP_Read (FB)¶

FUNCTION_BLOCK PUBLIC FINAL TCP_Read EXTENDS LConC

This function block serves to read data from the previously established connection given in itfConnection. As long as xEnable is TRUE and the connection is valid. The pointer pData specifies the memory area to write the read data to. udiSize defines the max number of bytes to read. When the data was read successfully, xReady is set to TRUE and udiCount indicates the actually read number of bytes.

InOut:

Scope	Name	Type	Comment	Inherited from
Input	xEnable	BOOL	TRUE: Activates the defined operation FALSE: Aborts/resets the defined operation	LConC
Output	xBusy	BOOL	TRUE: Operation is running	LConC
	xError	BOOL	TRUE: Error condition reached	LConC
	eErrorID	ERROR		LConC
Input	itfConnection	IConnection
	pData	__XWORD
	udiSize	UDINT
Output	xReady	BOOL
	udiCount	UDINT