Troubleshooting By Symptom; Troubleshooting Related To Led Indicators And I/O Signals - Mitsubishi Electric QJ81DL96 User Manual

18
TROUBLESHOOTING

18.3 Troubleshooting by Symptom

This section explains the error definition and corrective action by function and symptom.

18.3.1 Troubleshooting related to LED indicators and I/O signals

Symptom
The RUN LED does not turn
ON.
Module READY (X0) does not
turn ON, or it takes time to
turn ON.
CompactFlash card status
(X1) does not turn ON, or it
takes time to turn ON.
Check point
Is the module in preparation?
Is the watchdog timer error (X1F) ON?
Has SP.UNIT DOWN occurred in the
programmable controller CPU?
Check the error code.
 Section 18.1.1 Checking error codes
Are there any errors on the communication route
between the high speed data logger module and
the access target CPU?
Are there any errors in the "Access target CPU
setting"?
Are there any unnecessary settings in the "Access
target CPU setting"?
Is the module in preparation?
Are there many files on the installed
CompactFlash card?
Is file access stopped (X2 is ON)?
Are there many files on the installed
CompactFlash card?
18.3.1 Troubleshooting related to LED indicators and I/O signals
Corrective action
• Wait for startup of the module.
• Check if the compact flash card listed in the
Section 2.3 is used. If the appropriate compact
flash card is used, please consult your local
Mitsubishi representative and provide them a
detailed description of the problem.
• Identify the error and take corrective actions by
the error code.
 Section 18.2 Error Code List
• Check the communication route between the
high speed data logger module and the access
target CPU.
• Check the "Access target CPU setting".
• Delete any unnecessary access target CPU
settings.
(Depending on the number of items set in
access target CPU settings, it may take several
minutes until X0 turns ON.)
• Delete unnecessary files from the
CompactFlash card.
(If many files are stored on the CompactFlash
card, it takes time to turn X0 ON.)
• Clear the file access stop.
 Section 16.6 (2) Clearing file access stop
• Delete unnecessary files from the
CompactFlash card.
(If many files are stored on the CompactFlash
card, it takes time to turn X1 ON.)
18.3 Troubleshooting by Symptom
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