6ES7412-2EK07-0AB0, SIMATIC S7-400 – CPU 412-2 PN CENTRAL PROCESSING UNIT WITH: 1 MB WORKING MEMORY – (0 -5 MB CODE; 0 -5 MB DATA) INTERFACES: 1. IF MPI/DP 12 MBIT/S (X1) – 2. IF ETHERNET/PROFINET (X5), PLC Systems> SIMATIC S7-400, ,