SIMATIC S7-1500T, CPU 1518T-3 PN, central processing unit with 18 MB work memory for program and 150 MB for data, 1st interface: PROFINET IRT with 2-port switch, 2nd interface: PROFINET IRT, with 2-port switch, 3rd interface: PROFINET basic services 0.3 ns bit performance, SIMATIC Memory Card required