Siemens 4-531-2131 Description Description Siemens Siemens CNC Control Card Related products SIEMENS 1FK7022-5AK71-1DA0 SIEMENS 1FK6042-6AF71-1TH0 SIEMENS 1FK6060-6AF71-1TG0 SIEMENS 1FK7044-7AF71-1EG0 SIEMENS 1FK7063-5AF71-1FG2 SIEMENS 1FN1910-0AA20-3AA0