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8.2 Troubleshooting
8.2.1 When "RUN" LED turns off
8
TROUBLESHOOTING
8.2 Troubleshooting
8.2.1 When "RUN" LED turns off
8.2.2 When "RUN" LED flashes
8.2.3 When "ERR" LED flashes
8.2.4 When "ERR" LED turns on
Table 8.2 When "RUN" LED truns off
Check Item Corrective action
Is power supplied?
Check that the supply voltage of the power supply module is within
the rated range.
Is the capacity of the power supply module sufficient?
Calculate the current consumption of the CPU, I/O, intelligent
function and other modules mounted on the base unit, and make
sure that the capacity of the power supply module is enough.
Has a watchdog timer error occurred?
Reset the programmable controller CPU and check that the "RUN"
LED turns on. If the "RUN" LED does not turn on, the module may
have failed. Please consult your local Mitsubishi representative,
explaining a detailed description of the problem.
Are the modules mounted correctly on the base unit? Check the module mounting status.
Is the module in the online module change enable
status?
Refer to CHAPTER 7 and take corrective action.
Table 8.3 When "RUN" LED flashes
Check Item Corrective action
Is the module in the offset/gain setting mode?
Re-set the intelligent function module switch 4 in GX Developer to
the normal mode. (Refer to Section 4.5.)
Table 8.4 When "ERR" LED flashes
Check Item Corrective action
Is the setting value of the intelligent function module
switch 5 other than "0"?
Set "0" for the intelligent function module switch 5 in GX
Developefor. (Refer to Section 4.5.)
Table 8.5 When "ERR" LED turns on
Check Item Corrective action
Has an error occurred?
Check the error code and take the corrective action given in
Section 8.1.