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PLC Mitsubishi FX2 64M Error 6402

Posted: Tue Feb 06, 2018 2:44 pm
by vasilevdim
Hi, guys,

the problem is: Mitsubishi PLC FX2 64M with 2 red LED flashing -low battery and CPU; battery replaced, but CPU alarm persist. Connected to the PLC with GX Developer, using diagnostic of PLC revealed error 6402 (PARAMETER ERROR). In the HELP it says that the Managing Method is "stop the PLC, SELECT THE PARAMETER MODE, SET THE CORRECT PARAMETER" - CAN SOMEBODY ADVISE HOW EXACTLY TO DO THAT?

Re: PLC Mitsubishi FX2 64M Error 6402

Posted: Mon Feb 12, 2018 7:59 am
by Ronnie
You have a memory capacity error.

This means the memory is set different to what is in the plc
The default is 8000 steps - check that

Re: PLC Mitsubishi FX2 64M Error 6402

Posted: Mon Feb 19, 2018 7:18 pm
by vasilevdim
Hi, Ronnie,

thanks for your reply.
Problem was solved by clear the memory and download the backup.