Siemens 4-531-2131 Description Description Siemens Siemens CNC Control Card Related products SIEMENS 1FN1910-0AA20-1AA0 SIEMENS 1FK7103-5AF71-1DH0 SIEMENS 1FT5066-0AC01-2-Z SIEMENS 1FT5072-0AC01-1-Z SIEMENS 1FK7042-5AK71-1FB0 SIEMENS 1FT5066-1AF71-4AA0