Siemens 6ES7512-1DM03-0AB0 SIMATIC DP, CPU 1512SP-1 PN for ET 200SP, central processing unit with 400 kB work memory for program and 2 MB for data, 1st interface: PROFINET IRT with 3-port switch, bit rate 25 ns, SIMATIC memory card required, bus adapter required for ports 1 and 2