SIMATIC S7-300, CPU 317T-3 PN/DP, central processing unit for PLC and technology tasks, 1024 KB work memory, 1st interface MPI/DP 12 Mbps, 2nd interface DP (drive), 3rd interface Ethernet PROFINET with 2-port switch, integrated I/O for technology, front connector (1x 40-pole) and Micro Memory Card min. 8 MB required