Omron CJ1W-EIP21 Operation Manuals page 358

13 Troubleshooting
Event name Tag Data Link Error
Meaning There were two or more errors in a connection as an originator. The following are excluded.
• Connections as a target
• Connection timeouts due to a Link OFF Error with the switching hub
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
The power supply to the target node
is OFF.
Communications with the target node
stop.
The Ethernet cable for EtherNet/IP is
disconnected.
The Ethernet cable for EtherNet/IP is
disconnected.
Noise
Attached None
information
Precautions/ None
Remarks
Event name Tag Refresh Error
Meaning An unsupported data area or address range is specified for the tag data links.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
An unsupported data area or address
range was specified for the tag data
links.
Attached None
information
Precautions/ None
Remarks
13-40
Source details
Minor fault Recovery
Continues. Operation
Data type
---
Correction
Check the status of the target node
and start it normally.
Reconnect the connector and make
sure it is mated correctly.
Replace the Ethernet cable.
Implement noise countermeasures if
there is excessive noise.
Source details
Minor fault Recovery
Continues. Operation
Data type
---
Correction
Correct the tag data links so that the
area types and address ranges are
within the specified ranges.
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
Event code 34A90000 hex
CJ-series Unit Detection
timing
Automatic recov- Log category
ery
The relevant data link connection will stop. Reconnection
processing is periodically repeated for the tag data link
error target.
Name
---
Prevention
Make sure that the target node starts
normally.
Connect the connector securely.
None
Implement noise countermeasures if
there is excessive noise.
Event code 34AA0000 hex
CJ-series Unit Detection
timing
Error reset Log category
Tag data link function of the EtherNet/IP Unit cannot be
used.
Name
---
Prevention
Set the tag data links so that the area
types and address ranges are within
the specified ranges.
After link is
established
System
Continuously
System