// This program shows how to read and write to Shared Memory.
PROGRAM PLC_PRG
VAR
tt: Ton;
hShMemRead: RTS_IEC_HANDLE;
ResultRead: RTS_IEC_RESULT;
deInstRead : DataExchange;
ReadResult: RTS_IEC_RESULT;
iRead: __UXINT;
hShMemWrite: RTS_IEC_HANDLE;
ResultWrite: RTS_IEC_RESULT;
deInstWrite : output;
WriteResult: RTS_IEC_RESULT;
iWrite: __UXINT;
ulSize: UDINT := SIZEOF(DataExchange);
END_VAR
tt(IN := TRUE,PT:=T#500MS);
IF tt.Q THEN