Siemens 4-531-2157 Description Description Siemens Siemens CNC Control Card Related products SIEMENS 1FK6042-6AF71-1TH0 SIEMENS 1FT5072-0AC01-1-Z SIEMENS 1FK7042-5AK71-1FB0 SIEMENS 1FN3150-4SA00-0AA0 SIEMENS 1790L811A SIEMENS 1FK6060-6AF71-1TA0