SIMATIC S7-1500F, CPU 1517F-3 PN/DP, central processing unit with main memory 3MByte for program and 8MByte for data, 1st interface: PROFINET IRT with 2-port switch, 2nd interface: PROFINET RT , 3rd interface: PROFIBUS, 2 NS Bit-Performance, SIMATIC memory card required Product Family CPU 1517F-3 PN/DP