Mitsubishi Electric MELSEC Q Series User Manual page 81

(e) If the dot matrix LED shows other than "0000"
The "ERR." LED starts flashing once the error is detected during diagnostics or setting.
A value corresponding to the diagnostics for which the error occurred is displayed on the dot matrix LED.
If the dot matrix LED is off and only "ERR." LED flashes, a system error is present.
Dot matrix LED
Mode
display
E010, E011
1 E020, E021
E031
E040
2 E050
E061
3 E080
4 E090
5 E0A0, E0A1
6 E0B1
- E101
*1 : An error may occur if a distribution cable is not connected correctly.
Correctly connect and distribute the cable again, and then reexecute the self-diagnostic test for Mode 4.
Upon detection of the failure, the diagnostics and setting will be terminated.
Retry the diagnostics and setting if they failed.
If failure is detected again, the hardware of the Q24DHCCPU-V/-VG/-LS and Q26DHCCPU-LS may be faulty.
Please consult your local Mitsubishi service center or representative, explaining the details of the problem.
(f) Execution of the dot matrix LED test (mode 7)
Perform the following operations to execute the test.
Visually check there is no inactive dot in the 4-digit dot matrix LED.
If there is any inactive LED, the hardware of the Q24DHCCPU-V/-VG/-LS and Q26DHCCPU-LS may be faulty.
Please consult your local Mitsubishi service center or representative, explaining the details of the problem.
Error diagnostics
ROM diagnostic test
Work RAM diagnostic test
Battery backup RAM diagnostic test
Ethernet diagnostic test (CH1)
Ethernet diagnostic test (CH2)
Ethernet diagnostic test (S CH1)
SD memory card interface diagnostic test
*1
RS-232 diagnostic test
USB diagnostic test
Bus diagnostic test
(Occurred in system CPU and user CPU
control)
1.
Move the RUN/STOP/MODE switch to the RUN position.
2.
Move the RESET/SELECT switch to the SELECT position.
Each time you move the switch to the SELECT position, the
dot matrix LED is turned on/off in order from the all-on status.
Visually check the displayed status.
3.
Power OFF.
CHAPTER 6 HARDWARE OPERATIONS
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