Hi,

Which Ethernet switch can I use for Modbus TCP communication in S7-1200 PLC?

Hello! 

For Modbus TCP communication in an S7-1200 PLC, you can use the CSM 1277 Industrial Ethernet switch. The CSM 1277 is  designed specifically for the S7-1200, allowing you to connect the PLC and up to three additional devices to an Industrial Ethernet network. 

Here you can see the details. 

- COMPACT SWITCH MODULE CSM 1277

I hope it helps

Hello,

AutoGen_2969405

Hi,

Which Ethernet switch can I use for Modbus TCP communication in S7-1200 PLC?

any switch generally, I have more cheap switches (not managable) and also routers. In case of very specific situation, managed is prefferable with more configuration possibilities.