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Led Display On The Front Of The Module - Mitsubishi Electric C80 series Maintenance Manual

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C80 Series Maintenance Manual
9 Appx.3: Outputting the Error Code

9.5 LED Display on the Front of the Module

READY LED and ERROR LED are mounted on the front of the CNC CPU module.
The display is as follows:
To light ERROR LED upon occurrence of a minor error, set "1" in the parameter "#6471/bit0".
LED name
READY LED (green)
■ Lit
□ Not lit
(□■) Slow flashing
State of CNC CPU
□ Not lit
■ Lit
Minor error
(□■) Flashing
Moderate error
(□■) Flashing
Major error
□ Not lit
Confirm the error code with the engineering
tool, etc. and perform the corrective actions
corresponding to the error code.
(1) Restart the said module (Power OFF/
ON or NC reset).
(2) If the same phenomenon occurs even
after restarting, replace the said module
as it may have an H/W failure.
Corrective actions


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