Omron PROFINET NX-PNC202 User Manual page 230

12 Troubleshooting
TS
Green
--- Flashes at
1.0-s inter-
vals.
Not Lit Not Lit
 Troubleshooting the Primary Errors That Are Displayed with the UNIT PWR
Indicators
The UNIT PWR indicator shows the status of the Unit power supply.
UNIT
PWR
Green
Lit ---
Not Lit No power is supplied by the Unit power
supply.
12 - 6
Cause
Red
NX Unit Communica-
tions Timeout
NX Unit Initialization
Error
No power is supplied
by the Unit power sup-
ply.
Cause
Corrective action
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.
Connect the Sysmac Studio, and then set and save the Unit
configuration information in the PROFINET Coupler Unit
again. If this error occurs again, check that there are no
errors in the NX Unit settings and IO data mapping informa-
tion, and correct any errors that are found.
For an Analog IO 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.
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 RUN/ERR and COMM/BF indicators for addi-
tional information.
Check the UNIT PWR indicator for additional information.
Corrective action
--- (This is the normal status.)
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.
NX-series PROFINET Coupler Unit User's Manual (W623)