Siemens 6ES7412-2XK07-0AB0 PLC CPU Module. The recorded exact-product description states: SIMATIC S7-400, CPU 412-2 Central processing unit with: Work memory 1 MB, (0.5 MB code; 0.5 MB data) 1st interface MPI/DP 12 Mbit/s, 2nd interface PROFIBUS DP,. This is a legacy installed-base replacement listing for S7-300/S7-400 demand and is not represented as a current platform.