15-39
15 Troubleshooting
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
15-2 Troubleshooting
15
15-2-2 Error Descriptions
*1 This event code occurs for unit version 1.04 or later of the CPU Unit.
*2 This applies to an NJ-series CPU Unit.
*3 This applies to an NX-series CPU Unit.
Event name Tag Data Link Connection Timeout Event code
84090000 hex
*1
Meaning A timeout occurred while trying to establish a tag data link connection.
Source EtherNet/IP Function Module Source details
CIP,
*2
CIP1,
*3
or
CIP2
*3
Detection
timing
When establish-
ing tag data link
connection
Error attributes Level Minor fault Recovery Automatic recov-
ery
Log category System
Effects User program Continues. Operation Data links will not operate for connections that timed out.
Reconnection processing is periodically repeated for the
connection that timed out.
Indicators EtherNet/IP NET RUN EtherNet/IP NET ERR EtherNet/IP LINK/ACT
Flashes at 1-s intervals. Flashes at 1-s intervals. ---
System-defined
variables
Variable Data type Name
_EIP_TDLinkOpnErr
*2
BOOL Tag Data Link Connection Failed
_EIP1_TDLinkOpnErr
*3
BOOL CIP Communications1 Tag Data Link
Connection Failed
_EIP2_TDLinkOpnErr
*3
BOOL CIP Communications2 Tag Data Link
Connection Failed
Cause and cor-
rection
Assumed cause Correction Prevention
The power supply to the target node
is OFF.
Check the status of the target node
and start it normally.
Use the tag data link after you confirm
that the target node is normal.
Communications at the target node
are stopped.
The Ethernet cable connector for Eth-
erNet/IP is disconnected.
Reconnect the connector and make
sure it is mated correctly.
Connect the connector securely.
The Ethernet cable for EtherNet/IP is
broken.
Replace the Ethernet cable. None
An error occurred in the communica-
tions path.
Check the communications path and
take corrective measures if there are
any problems.
None
Attached informa-
tion
Attached information 1: Target node IP address (example: C0A8FA01 hex = address 192.168.250.1)
Precau-
tions/Remarks
• You can change the event level to the observation level. If you change the level to the observation level, the Ether-
Net/IP NET ERR column above will be changed to “---” (no change) and recovery will not be necessary.
• The following cases are not included in this error.
Connections as a target
Connection timeouts due to a Link OFF detection for an Ethernet switch
• This event occurs only once even if this error occurred simultaneously in several connections for the same target
node.
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