Omron CJ1W-EIP21 Operation Manuals page 354

13 Troubleshooting
Event name Unit Memory Error (Device Error)
Meaning An error occurred when writing to the error history or device parameters in non-volatile memory in the EtherNet/IP Unit.
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
13-36
Source details
Minor fault Recovery
Continues. Operation
Data type
---
Correction
If device parameter writing fails,
download the device parameters
using the Network Configurator.
Then, if the error persists even after
cycling the power supply or restarting
the EtherNet/IP Unit, check for ambi-
ent noise. If there is a noise source,
remove it.
If the error occurs even after perform-
ing the actions described above,
replace the EtherNet/IP Unit.
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
Event code 047A0000 hex
CJ-series Unit Detection
timing
Error reset Log category
The following operations will be performed depending on
the type of error in the non-volatile memory. (You can
check the error history in the EtherNet/IP Unit and the CIO
Area status.)
02 hex (network parameters): Tag data links stop.
06 hex (error history): The error history is not saved in
non-volatile memory.
09 hex (identity information): EtherNet/IP communications
stop.
0E hex (Unit name): No affect on other communications.
0F hex (basic Ethernet settings): Communications are not
possible.
10 hex (advanced Ethernet settings): The relevant func-
tion stops.
11 hex (MAC address): Ethernet communications stop.
12 hex (status area layout settings): Operation is per-
formed using default layout settings.
14 hex (Tag address resolve memory write error): Tag
data link communications stops.
Name
---
Prevention
Use the Unit away from sources of
noise. Implement noise countermea-
sures.
None
At power ON,
Controller reset,
or Unit restart
System