PROGRAM PLC_PRG VAR by

29 . 例 PROGRAM PLC_PRG

PROGRAM PLC_PRG VAR

_VA ; PROGRAM PLC_PRG VAR b

PROGRAM PLC_PRG VAR by

PROGRAM PLC_PRG VAR

PLC_PRG VAR di

PLC_PRG VAR dw

A := TRUE; PROGRAM PLC_PRG

_VAR PROGRAM PLC_PRG VAR fb