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8.1 Troubleshooting Flow
8.1.4 When the System A/System B CPU module "RUN" LED is not ON
8
TROUBLESHOOTING
Diagram 8.6 Flow for the Case where the System A/System B CPU Module "RUN" LED is not ON
NO
Please contact the nearest Mitsubishi
represenative
, reseller or branch office
and explain the fault symptoms.
1)
NO
YES
YES
YES
NO
Clear the fault and reset with the
RESET/L.CLR switch
Does the "RUN" LED light up?
Is there a hardware failure?
Is the "ERR." LED ON or
flashing?
NO
NO
Perform a remote RUN to set to
RUN status
Set to RUN status by turning off
the RUN contact / PAUSE contact
YES
YES
Has a remote STOP /
PAUSE been done?
Is the RUN contact /
PAUSE contact ON?
Please contact the nearest Mitsubishi
represenative
, reseller or branch office
and explain the fault symptoms.
Connect GX Developer to the control
system CPU module and check for
faulty behavior using the System
Monitor / PLC diagnostics. *4
This is a hardware fault in the CPU
module, so please contact the nearest
Mitsubishi represenative, reseller or
branch office and explain the fault
symptoms.
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