Siemens 6ES7412-1XJ07-0AB0 PLC CPU Module. The recorded exact-product description states: SIMATIC S7-400, CPU 412-1 Central processing unit with: Work memory 512 KB, (256 KB code, 256 KB data), interface MPI/DP 12 Mbit/s,. This is a legacy installed-base replacement listing for S7-300/S7-400 demand and is not represented as a current platform.