Siemens 4-531-2128D Description Description Siemens Siemens CNC Control Card Related products SIEMENS 1790L811A SIEMENS 1FK7022-5AK71-1AG0 SIEMENS 1FN3150-4SA00-0AA0 SIEMENS 1FK7103-5AF71-1DH0 SIEMENS 1FN1910-0AA20-3AA0 SIEMENS 1FT5066-0AC01-2-Z