_VAR FB(); FUNCTION_BLOCK

_VAR FUNCTION_BLOCK FB

能将它们用作标识符： ACTION END_ACTION END_FUNCTION END_FUNCTION_BLOCK

持 FUNCTION_BLOCK struct 包含 [...] 了实现 FUNCTION_BLOCK 。 FUNCTION STRUCT 包含

.in_out; FUNCTION_BLOCK FB VAR

的范围： FUNCTION FUNCTION_BLOCK [...] END_VAR FUNCTION_BLOCK [...] ; END_VAR FUNCTION_BLOCK

); FUNCTION_BLOCK FB VAR

'} FUNCTION_BLOCK FB1 VAR

.Prop; FUNCTION_BLOCK FB VAR

_VAR FUNCTION_BLOCK FB VAR