... to enter into modification:set it as 1, when there is input in F1 pin, it will display the mark “INSPECTION ... ”; Set it as 2, when there is input in F1 pin, it will display the mark of ... to enter into modification:set it as 1, when there is input in F2 pin, it will display the mark “ ... INSPECTION”; Set it as 2, when there is input in F2 pin, it will display the mark of ...