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What communication protocols does Siemens plc have?

Siemens PLC has four categories and dozens of models, and the communication protocols supported by different PLCs are different.

S7-200 series supports PPI, MPI, PROFIBUS, Ethernet, S7 protocol, AS-INTERFACE, USS, MODBUS and Freeport.

S7-300\400 series supports MPI, PROFIBUS, Ethernet, ISO, ISO-ON-TCP, MODBUS and other protocols.

The same point is that the physical transmission media of the same protocol are the same. For example, S7 protocol can use DP and Ethernet as transmission media.

The difference is that each protocol corresponds to a different configuration method and process.