13 Troubleshooting
13-14
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
* The 7-segment display alternates between the node address and error code.
Indicator
Error Cause Unit operation
Error log
(hex)
Countermeasure
MS NS
7-seg-
ment*
Errors Related to the Tag Data Links
--- --- d6 Connection
Failed
The connection could
not be established
because device
parameters (such as
the variable name
and size) did not
match in the origina-
tor and target, or con-
nection resources are
insufficient.
The Unit will periodically
attempt to reconnect to
the target.
*_TDLOpnErr (Verifica-
tion Error), *_UnitErr (Unit
Error Occurred), and
*_NetErr (Network Error
Occurred) will change to
TRUE.
03D4 Correct the device
parameter settings,
and download the
device parameters
again from the Net-
work Configurator.
--- --- d9 Tag Data Link
Error
A timeout occurred in
the tag data link. (Tag
data was not received
from the target within
the specified timeout
time.)
The Unit will periodically
attempt to reconnect to
the target where the error
occurred.
*_TDLErr (Tag Data Link
Error), *_UnitErr (Unit
Error Occurred), and
*_NetErr (Network Error
Occurred) will change to
TRUE.
03D5 Check the following
items:
• Is the registered
node’s power sup-
ply ON?
• Is the cable con-
nected?
• Is the cable dam-
aged or loose?
• Is there excessive
noise?
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