Omron NJ501-1 Series User Manual page 190

5 Troubleshooting
Errors for Self Diagnosis
Event name DIP Switch Setting Error
Meaning An error was detected in the DIP switch setting.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
There is an error in the DIP switch
setting.
Attached Attached information 1: DIP switch readout value (00000000 hex to 0000000F hex)
information
Precautions/ None
Remarks
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 5-6.
Event name Internal NJ-series Bus Check Error
Meaning A fatal error was detected on the internal bus.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
Conductive material has gotten
inside.
Noise
• There is data corruption in bus sig-
nals.
• There is malfunctioning in bus inter-
face circuits.
The CPU Unit has failed.
• The internal bus is disconnected.
Attached Attached information 1: Controller information
information
Precautions/ When this error occurs, the CPU Unit stops and the error is recorded in the event log. If cycling the power to the Con-
Remarks troller clears the error, you will be able to see whether this error occurred by checking the event log. However, a restart
is sometimes not possible depending on the error location.
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 5-6.
5-24
Source details
Major fault Recovery
Stops. Operation
Data type
---
Correction
Turn OFF all pins on the DIP switch.
Source details
Major fault Recovery
Stops. Operation
Data type
---
Correction
If there is conductive material nearby,
blow out the CPU Unit with air.
If the error occurs even after making
the above correction, check the FG,
and power supply lines, and other
noise entry paths, and implement
noise countermeasures as required.
If this error persists even after you
make the above two corrections,
replace the CPU Unit.
Event code 0009 0000 hex
None Detection
timing
Cycle the power Log category
supply.
Stops.*
Name
---
Prevention
Make sure that the DIP switch set-
tings are correct.
Event code 000D 0000 hex
None Detection
timing
Cycle the power Log category
supply.
Stops.* A connection to the Sysmac Studio may not be
possible.
Name
---
Prevention
Do not do any metal working in the
vicinity of the control panel. Also,
make sure that the operating environ-
ment is free of dirt and dust. Close the
control panel.
Implement noise countermeasures.
None
NJ-series CPU Unit Hardware User's Manual (W500)
At power ON or
Controller reset
System
Continuously
System