Checking For Errors With The Indicators - Omron NX Series User Manual

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Checking for Errors with the Indicators

You can use the TS indicators on the NX Units to check the NX Unit status and level of errors.
This section describes the meanings of errors that the TS indicator shows and the troubleshooting pro-
cedures for them.
In this section, the status of the indicator is indicated with the following abbreviations.
Abbreviation
Lit
Not Lit
FS ( )
−
Troubleshooting the Primary Errors
All Units
TS indicator
Green
Lit Not Lit
FS (2 s) Not Lit
Lit Lit
Not Lit Not Lit
Not Lit Lit
Not Lit Lit
Not Lit FS (1 s)
NX-series System Unit User's Manual (W523)
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Lit
Not lit
Flashing. The numeric value in parentheses is the flashing interval.
Undefined
Cause
Red
−
• Initializing
• Downloading
This status is not present.
The Unit power supply is not sup-
plied.
• Waiting for initialization to start
• Restarting
If you cannot resolve the problem after you check the above items and cycle the
Slave Terminal power supply, the Unit may have a hardware failure. If this happens,
replace the Unit.
Hardware failure
Non-volatile Memory Hardware
Error
This status is not present
Indicator status
Correction
− (This is the normal status.)
− (Normal. Wait until the processing is com-
pleted.)
Check the following items and supply the Unit
power supply correctly.
[Check items for power supply]
• Make sure that the power supply cable is
wired correctly.
• Make sure that the power supply cable is not
disconnected.
• Make sure that power supply voltage is within
the specified range.
• Make sure that the power supply has enough
capacity.
• Make sure that power supply has not failed.
- (Normal. Wait until the processing is com-
pleted.)
If this error occurs after you cycle the Slave Ter-
minal power supply, replace the Unit.
Refer to Event Non-volatile Memory Hardware
Error on page 5-10.
5 Troubleshooting
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