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 1FN1910-0AA20-1AA0 SIEMENS 1FK7022-5AK71-1DA0 SIEMENS 1FN1910-0AA20-3AA0 SIEMENS 1FK6042-6AF71-1TB0 SIEMENS 1FN3300-4SA00-0AA0 SIEMENS 1FK7103-5AF71-1DH0