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About KongFah

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    Hi, I am New!

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  1. Mitsubishi PLC ERROR

    My Fx3u-48 M suddenly have error.Red LED error light up and all output LED not light up.Sometime,the red LED error not light up and the output LED return to normal cobdition.In Mitsubishi GOT ,have error message“Communication error ,Refer to System Alarm in Utility Menu." Where is Utility Menu?What wrong my PLC and what i should do?