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