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8
TROUBLESHOOTING
8.2
Troubleshooting
8.2.1
(1) When flashing
Is the mode set to the offset/gain setting mode?
(2) When off
Is the power being supplied?
Is the capacity of the power supply module adequate?
Has a watchdog timer error occurred?
Is the module correctly mounted on the base unit?
Is a module change enabled during an online module change?
8.2.2
(1) When on
Is an error being generated?
(2) When flashing
Is intelligent function module setting switch 5 set to "other than 0"?
8.2.3
(1) When on
Is a warning output being generated?
(2) When flashing
Is an input signal error being generated?
8.2 Troubleshooting
8
- 5
8.2.1 When the "RUN" LED is flashing or turned off
When the "RUN" LED is flashing or turned off
Check item
Check item
When the "ERR." LED is on or flashing
Check item
Check item
When the "ALM" LED is on or flashing
Check item
Check item
Corrective action
Reset switch 4 of the intelligent function module switch setting for
GX Developer to the normal mode (Refer to Section 4.5).
Corrective action
Confirm that the supply voltage for the power supply module is
within the rated range.
Calculate the current consumption of the CPU module, I/O module
and intelligent function module mounted on the base unit to see if
the power supply capacity is adequate.
Reset the programmable controller CPU and verify that it is lit. If
the RUN LED does not light even after doing this, the module may
be malfunctioning. Please consult your local Mitsubishi represen-
tative.
Check the mounting condition of the module.
Refer to Chapter 7 and take corrective action.
Corrective action
Confirm the error code and take corrective action described in
Section 8.1.
Corrective action
Using GX Developer parameter setting, set intelligent function
module setting switch 5 to "0" (Refer to Section 4.5).
Corrective action
Check the warning output flag (Un\G50, Un\G51).
Corrective action
Check the input signal error detection flag (Un\G49).
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