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MELSEC-Q
9 TROUBLESHOOTING
Error code Error name Error Operation status at error occurrence
810 Switch setting error
Any of the setting values of setting with
the intelligent function module set on GX
Developer is in error.
• Count operation cannot be
performed.
• If an error occurs in any of the
channels, all channels result in an
error.
820
Programmable controller
CPU error
An error occurred in the programmable
controller CPU.
The module continues operation.
830
Programmable controller
CPU watch dog timer error
The watch dog timer error of the
programmable controller CPU occurred.
840
Module error A module power off error occurred.
850
Hardware error Hardware fault.
Module READY (X0) turns OFF.
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