from the programming system. If a

PROGRAM PLC_PRG VAR i [...] _IF; The program is run

PROGRAM PLC_PRG VAR x [...] ; END_IF PROGRAM PLC

the graphical programming

program ( PROGRAM ) [...] _IF PROGRAM PLC_PRG fb

-oriented programming. An interface [...] _A; Program PLC_PRG PROGRAM

_PRG program VAR fb_A1 : FB [...] . Locally in a program [...] in a program

-oriented programming [...] VarB is obscured. PROGRAM PLC [...] THIS^. PROGRAM PLC

or complex program

; call in the program