CP443-1 or CP443-1 IT for the S7/400 and CP343-1 for the S7/300.Ĭonnecting a PC to either MPI or PROFIBUS network requires an interface board and some board driver software from Siemens to be installed in the PC. Siemens IE is used in the S7/300 and S7/400 series. Both ISO and TCP/IP are supported as transport protocols. The S7 protocol can also be used with Siemens Industrial Ethernet (Siemens IE). Other CP boards supporting S7 functions might also be applied. CP443-5 for Simatic S7/400 series and CP343-5 for Simatic S7/300 series. mixing electrical and optical networks etc. Running the S7 protocol on a PROFIBUS network requires the S7 PLC systems to have a separate CP board installed and offers the full flexibility of a PROFIBUS network e.g. the baudrate is restricted on MPI type networks. This means that no extra CP board has to be installed in the PLC. MPI network is used for connecting to the CPU port directly on S7 PLC systems. The S7 protocol can be running on either a standard PROFIBUS network or on a MPI network. The S7 protocol is an application layer protocol which implements functions for exchanging data between Simatic S7 series PLCs and other devices that supports the S7 protocol – e.g. IGSS32 offers an interface for connecting to Simatic S7 equipment using S7 protocol.
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