SIMATIC S7-1500, CPU 1518-4 PN/DP MFP, inclusive C/C++ Runtime and OPC UA Runtime license working memory 4 MB for program and 20 MB for data, 1. interface: PROFINET IRT with 2 port switch, 2. interface: PROFINET RT, 3. interface: Ethernet, 4. interface: PROFIBUS, 1 ns bit-performance, SIMATIC memory card (min. 2 GB) necessary