Omron CJ1W-AD041-V1, Operation Manual

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Handling Errors and Alarms Section 7-10
7-10 Handling Errors and Alarms
7-10-1 Indicators and Error Flowchart
Indicators If an alarm or error occurs in the Analog I/O Unit, the ERC or ERH indicators
on the front panel of the Unit will light.
Troubleshooting
Procedure Use the following procedure for troubleshooting Analog I/O Unit errors.
LED Meaning Indicator Operating status
RUN (green) Operating Lit Operating in normal mode.
Not lit Unit has stopped exchanging data with
the CPU Unit.
ERC (red) Unit has
detected an
error Lit Alarm has occurred (such as disconnec-
tion detection) or initial settings are incor-
rect.
Not lit Operating normally.
ERH (red) Error in the
CPU Unit Lit Error has occurred during data exchange
with the CPU Unit.
Not lit Operating normally.
ADJ (yellow) Adjusting Flashing Operating in offset/gain adjustment
mode.
Not lit Other than the above.
Front panel of Unit
RUN
ERC
ADJ
ERH
Is the ERC indicator
lit?
Yes
No
Is the RUN indicator
lit?
Yes
No
Alarm has occurred at the Analog I/O Unit.
Check whether the initial settings for the Analog I/O Unit
are set correctly.
Is the ERH indicator
lit?
Yes
No
Is the RUN indicator
lit?
Yes
No
Error detected by CPU Unit
Check whether the unit number is set correctly.
Error occurs.
(Refer to 7-10-2 Alarms Occurring at the Analog I/O Unit .)
Refer to 7-10-5
Troubleshooting .
(Refer to 7-10-2 Alarms Occurring at the Analog I/O Unit .)
(Refer to 7-10-3 Errors in the CPU Unit .)
(Refer to 7-10-3 Errors in the CPU Unit .)