Troubleshooting Other Errors - Omron PROFINET NX-PNC202 User Manual

12-5 Troubleshooting Other Errors

This section describes error symptoms that cannot be resolved with the methods for checking for errors
and troubleshooting that were described earlier.
Status
When the Unit configuration was
registered, the TS indicator on the
PROFINET Coupler Unit flashed
green, and the TS indicators on the
first few NX Units near the PROF-
INET Coupler Unit flash green and
the TS indicators on the other NX
Units are not lit.
• All TS indicators on the Profinet IO
Device Terminal (PROFINET Cou-
pler Unit and NX Units) are lit
green.
• When the output of the PROFINET
Coupler is active, the OUT indica-
tor on the Digital IO Unit is lit yel-
low but the actual output is OFF.
• A device (e.g., sensor) that is con-
nected to the Digital IO Unit is ON,
but a signal is not input, and the IN
and OUT indicators are both not lit.
NX-series PROFINET Coupler Unit User's Manual (W623)
Possible cause and correction
The NX bus connector on the left side of the Units where the TS indica-
tors are not lit is not connected properly.
Connect it properly and cycle the power supply.
PROFINET
Coupler Unit
TS indicator status
• The power supply to the Additional NX Unit Power Supply Unit is not
turned ON. Check the wiring and turn ON the power supply.
• The NX bus connectors between the Units are not connected properly.
Make sure that the Unit hookup guides are properly engaged.
• The wiring for the IO power supply is disconnected. Check the wiring.
12 Troubleshooting
NX Units
Not lit.
Flashing.
Faulty connection
12
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