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12 Troubleshooting
NX-series EtherNet/IP Coupler Unit User’s Manual (W536)
12-2 Checking for Errors and Troubleshooting with the Indicators
12
12-2-2 Checking for Errors and Troubleshooting with the Indicators on the NX Units
The TS indicator on an NX Unit tells you the status and level of any errors in the NX Unit.
Refer to the manuals for the individual NX Units for details on the other indicators on the NX Units.
Not Lit A link was not established in the physi-
cal layer.
Check the following items, and then restart the Slave Termi-
nal based on the specifications of the connected Ether-
Net/IP master.
Items Related to the Communications Cable
• Make sure that the communications cable is wired prop-
erly.
• Make sure that there are no breaks in the communica-
tions cable or loosening in the mating parts.
• Make sure that the cable is of the appropriate length.
• Make sure that the communications cable meets the rec-
ommended specifications.
The host master is not operating. Make sure that the operation of the EtherNet/IP master is
correct.
If you cannot resolve the problem after you check the above items and cycle the Unit power supply,
there may be a hardware failure. In that case, replace the EtherNet/IP Coupler Unit.
12-2-2 Checking for Errors and Troubleshooting with the Indicators on
the NX Units
L/A P1
L/A P2
Cause Corrective action
Green
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