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Q: Which network communication ports are available on the MG400?

Port 502 is used for modbus applications by default, don't occupy it.
Port 8172 is used by the Lua debugger, don't occupy it.
LAN1 is used by the MG400 to connect to the upper computer.
LAN2 is available to the operator for TCP communication by default. User can modify it, but do not change it to network segment 1 to avoid conflicts with LAN1.

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