当某一路输出不用时。对应的端子应全部悬空（NC）
MSC304-10GB,MSC304-1032,MSC304-10C2,MSC304-40CG,MSC304-4023,
MSC304-10CC,MSC304-20CC,MSC304-1022,MSC304-1033,MSC304-10BB,
MSC304-2022,MSC304-2033,MSC304-20BB,MSC304-1020,MSC304-1030,
MSC304-10B0,MSC304-10C0,MSC304-2020,MSC304-2030,MSC304-20B0
MSC304-202C,MSC304-G03B,MSC304-40CG,MSC304-1