Omron PROFINET NX-PNC202 User Manual page 228

12 Troubleshooting
RUN/ERR
Green Red
Not Lit Not Lit
Flashes Flashes
at 0.5-s at 0.5-s
inter- inter-
vals. vals.
Lit ---
--- Lit
--- Flashes
at 0.5-s
inter-
vals.
Lit ---
Lit ---
12 - 4
COMM/BF
Green Red
Not Lit Not Lit • No power is supplied by the
Unit power supply.
• Restarting is in progress for the
Unit.
• Waiting for initialization to start.
Flashes Flashes Device identification when DCP
at 0.5-s at 0.5-s Set/Flush is received.
inter- inter-
vals. vals.
Lit --- Normal operation and online com-
munication connection is estab-
lished.
--- --- • Bus Controller Error
• Non-volatile Memory Hardware
Error
• Memory Corruption Detected
--- --- • Unit Configuration Verification
Error
• Non-volatile Memory Control
Parameter Error
• Unit Configuration Error
• Unit Configuration Error, Too
Many Units
• Unit Configuration Error,
Unsupported Configuration
• NX Unit Communications Time-
out
• NX Unit Initialization Error
• NX Unit Startup Error
--- Lit Waiting for a PROFINET IO Con-
troller to connect.
--- Flashes The communication coupler has
at 1.0-s rejected the last connection
inter- attempt of a PROFINET IO Con-
vals. troller.
Cause
Check the following items and make
sure that power is correctly supplied
from the Unit power supply.
Checks Related to the Power Sup-
ply
• 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 initializ-
ing.
Check the UNIT PWR indicator for
additional information.
--- (This is the normal status. Wait
until processing is completed.)
--- (This is the normal status.)
Cycle power to the IO Device Unit.
If cycling the power does not clear
the error, replace the IO Device
Unit.
Refer to 12-3-4 Event Codes for
Errors and Troubleshooting Proce-
dures on page 12-11 for trouble-
shooting information.
Check the following items.
• Profinet IO Controller configura-
tion
NX-series PROFINET Coupler Unit User's Manual (W623)
Corrective action