SIMATIC S7-300, CPU 315T-3PN/DP, Central processing unitfor PLC and technology tasks,384 KB work memory, 1stinterface MPI/DP 12 Mbit/s, 2ndinterface DP (drive), 3rdinterface Ethernet PROFINETwith 2-port switch, Integr. I/Ofor technology, Front connector(1x 40-pole) and Micro MemoryCard min. 8 MB required