SIMATIC S7-1500T. CPU 1518T-4 PN/DP. central processing unit with 9 MB work memory for program and 60 MB for data. 1st interface PROFINET IRT with 2-port switch. 2nd interface PROFINET RT. 3rd interface PROFINET basic services. 4th interface PROFIBUS. 1 ns bit performance. SIMATIC memory card required