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Issue: PLC FX5 Mitsubishi will not connect via Secomea, but HMI, or other Ethernet enable devices in same ethernet switch will.
When disconnecting HMI from switch, connection to the PLC works, but not when both units were on.
Cause: Some FX5 plc will have an old firmware, or req. extra settings to be able to connect with other Mitsubishi devices over ethernet.
How to fix it: Make sure that you are using the latest firmware, and in the PLC software that you have a melsoft connection module per Mitsubishi device in the Ethernet network, i.e. 1 hmi and 1 plc = 2 modules.
Tips & Trix
For FX5U CPU Webserver - try Connect All if you get the error like below picture.
Moste likely is that the PLC is broadcasting the webserver at a subnet level.
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