Siemens 6ES7515-2FM01-0AB0 SIMATIC S7-1500F, CPU 1515F-2 PN, Central processing unit with 750 KB work memory for programs and 3 MB for data, 1st interface: PROFINET IRT with 2-port switch, 2nd interface: PROFINET RT, 30 NS bit throughput, SIMATIC memory card required