_PRG.fileListProvider // Instance of function block Visu
FUNCTION_BLOCK POU [...] 块的实现 POU FUNCTION_BLOCK [...] ChangedListener . FUNCTION_BLOCK POU
FUNCTION_BLOCK FB_A VAR_INPUT [...] <function block name [...] PROGRAM Sine VAR_INPUT
_IN_OUT_AS_POINTER' pragma 的接口。 FUNCTION_BLOCK [...] ChangeUserLevel : VAR_INPUT s [...] ; // user input: level s