SIPLUS S7-1500 CPU 1518-4 PN/DP MFP based on 6ES7518-4AX00-1AC0 with conformal coating, 0…+60 °C, central processing unit with C/C++ Runtime preinstalled, work memory 4 MB for program and 20 MB for data, 1st interface: PROFINET IRT with 2-port switch, 2nd interface: PROFINET RT, 3rd interface: Ethernet, 4th interface: PROFIBUS, 1 ns bit performance, SIMATIC Memory Card (min. 2 GB) required, with OPC UA Runtime license.