UDP_Receive (FB)¶

FUNCTION_BLOCK UDP_Receive EXTENDS CBM.LTrig

This function block serves to receive data.

The pointer pData specifies the memory area to write the read data to. szSize defines the max number of bytes to read. When data was read successfully, xReady is set to TRUE and szCount indicates the actually read number of bytes. ipFrom and uiPortFrom indicate the ip and port the data was received from.

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	`hPeer`	`CAA.HANDLE`
	`szSize`	`CAA.SIZE`
	`pData`	`CAA.PVOID`
Output	`eError`	ERROR
	`xReady`	`BOOL`
	`ipFrom`	IP_ADDR
	`uiPortFrom`	`UINT`
	`szCount`	`CAA.SIZE`