Omron CJ1W-EIP21 Operation Manuals page 355

Event name Non-volatile Memory Error
Meaning An error occurred in non-volatile memory.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
There is a source of noise nearby.
Non-volatile memory failure
Attached None
information
Precautions/ None
Remarks
Event name Communications Controller Error
Meaning An error occurred in the communications controller.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
Noise
Communications Controller hardware
error
Attached None
information
Precautions/ None
Remarks
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
Source details
Minor fault Recovery
Continues. Operation
Data type
---
Correction
Remove any nearby sources of noise. Use the Unit away from sources of
If the above cause does not apply,
replace the Unit.
Source details
Minor fault Recovery
Continues. Operation
Data type
---
Correction
Cycle the power supply to the Con-
troller. Implement noise countermea-
sures.
If the error occurs even after perform-
ing the actions described above,
replace the EtherNet/IP Unit.
13 Troubleshooting
Event code 047B0000 hex
CJ-series Unit Detection
timing
Error reset Log category
The Unit will stop if this error is detected in self-diagnosis
when the power supply is turned ON. Operation continues
if the error occurs during operation.
Name
---
Prevention
noise. Implement noise countermea-
sures.
None
Event code 047C0000 hex
CJ-series Unit Detection
timing
Error reset Log category
The EtherNet/IP Unit is offline. Communications are not
possible. Error responses are returned to all communica-
tions requests. Data refreshing with the CPU Unit contin-
ues.
Name
---
Prevention
Use the Unit away from sources of
noise. Implement noise countermea-
sures.
None
Continuously
System
13
After link is
established
System
13-37