_VAR FUNCTION_BLOCK FB
块实例的名称（ FUNCTION_BLOCK ）或程 [...] FUNCTION_BLOCK FB
_TYPE FUNCTION_BLOCK FB
FUNCTION_BLOCK FB
_on_call'} FUNCTION_BLOCK fb VAR
_VAR FUNCTION_BLOCK FB METHOD
项目中定义的接口。 FUNCTION_BLOCK POU VAR
