SIEMENS 6AV3971-1XD03-0AB0 Description Description SIEMENS MEMORY SUBMODULE FOR OP30 V2.03 W. OPER. SYSTEM IN 256KB EPROM AND 256KB FLASH-EPROM Related products SIEMENS 1FK7042-5AK71-1FB0 SIEMENS 1FK7022-5AK71-1AG0 SIEMENS 1FK7103-5AF71-1DH0 SIEMENS 1FK7042-5AF71-1EA0 SIEMENS 1FK6042-6AF71-1TB0 SIEMENS 1FK6042-6AF71-1TH0