Omron CJ2-CPU User Manual

12 - 7
12 Troubleshooting
NX-series EtherNet/IP Coupler Unit User’s Manual (W536)
12-2 Checking for Errors and Troubleshooting with the Indicators
12
12-2-1 Checking for Errors and Troubleshooting with the Indicators on the EtherNet/IP Coupler Unit
 Troubleshooting the Primary Errors That Are Displayed with the UNIT PWR
Indicators
The UNIT PWR indicator shows the status of the Unit power supply.
--- Flashes at
1.0-s inter-
vals.
NX Unit Communica-
tions Timeout
Check the following items.
• Make sure that the NX Unit is mounted correctly.
If the error occurs again even after you make the above cor-
rection, replace the NX Unit.
NX Unit Initialization
Error
Connect the Support Software, and then set and save the
Unit configuration information in the EtherNet/IP Coupler
Unit again. If this error occurs again, check that there are no
errors in the NX Unit settings and I/O data mapping informa-
tion, and correct any errors that are found.
For an Analog I/O Unit, set the Channel Enable/Disable Set-
ting to Enable for at least one channel.
If the error occurs again even after you check the items
above, cycle the power supply to the NX Unit in question. If
this error persists, replace the NX Unit.
• BOOTP Server Con-
nection Error
• TCP/IP Setting Error
(Local IP Address)
• IP Address Duplica-
tion Error
Refer to 12-3-5 Event Codes for Errors and Troubleshooting
Procedures on page 12-22 for troubleshooting information.
Not Lit Not Lit No power is supplied
by the Unit power sup-
ply.
Check the following items and make sure that power is cor-
rectly supplied from the Unit power supply.
Checks Related to the Power Supply
• Make sure that the power supply cable is wired properly.
• Make sure that there are no breaks in the power supply
cable.
• Make sure that the power supply voltage is within the
specified range.
• Make sure that the power supply has enough capacity.
• Make sure that the power supply has not failed.
• Wait for the Unit to finish initializing.
Check the MS and NS indicators for additional information.
Check the UNIT PWR indicator for additional information.
UNIT
PWR
Cause Corrective action
Green
Lit --- --- (This is the normal status.)
TS
Cause Corrective action
Green Red

Omron CJ2-CPU Specifications

General

Brand	Omron
Model	CJ2-CPU
Category	Controller
Language	English