example

Requirement: The two applications ‎App1‎ and ‎App2‎ exist. The POU ‎PLC_PRG1‎ exists in ‎App1‎ and ‎App2‎, and the POU ‎CheckBounds‎ exists only in ‎App1‎.

{IF defined (pou: PLC_PRG1) OR (defined (pou: CheckBounds))}
    (* the following code is only processed in App1 and in App2 *)
    bORTest := TRUE;
{END_IF}