: Interface reference or FB [...] END [...] mderived1 : BOOL END

_BLOCK FB_Base VAR_OUTPUT iCnt : INT; END [...] _BLOCK FB_1 EXTENDS FB

method FB [...] block (FB) <<function [...] > Example: fbBase : FB

_Simple_Machine; END_VAR fb [...] function block named FB [...] . PROGRAM PLC_PRG VAR fb

: literal END_SEC END [...] ] END_SEC END [...] Level_2'; END_SEC SEC

: LiteralOrConstant END_SEC END_SEC Details [...] existing FB variable

1000; END_VAR VAR fb [...] be overwritten END_VAR ; [...] : PROGRAM PLC_PRG VAR <fb

_ref: REFERENCE TO FB_C; END [...] The FB_A function block references FB

; END_VAR fb [...] ; END_IF iVar := fb [...] by the derived FB Add Adds a

inst : FB; END