Omron Sysmac NX Series User Manual page 216

9 Troubleshooting
Cause and For Communications Coupler Units
correction
An error that prevents normal NX
bus communications occurred in
a Communications Coupler Unit.
The NX Unit is not mounted
properly.
The power cable for the Unit
power supply is disconnected.
Or, the wiring from the Unit pow-
er supply to the NX Units is in-
correct.
The power cable for the Unit
power supply is broken.
The voltage of the Unit power
supply is outside the specified
range. Or, the capacity of the
Unit power supply is insufficient.
There is a hardware error in the
NX Unit.
Attached in- None
formation
Precautions/ None
Remarks
9 - 24
Check the error that occurred in
the Communication Coupler Unit
and perform the required correc-
tions.
Mount the NX Units and End
Cover securely and secure them
with End Plates.
Correctly wire the Unit power
supply to the NX Units.
If the power cable between the
Unit power supply and the NX
Units is broken, replace it.
Correctly configure the power
supply system according to the
power supply design methods.
If the error occurs again even af-
ter you make the above correc-
tion, replace the NX Unit.
NX-series Analog I/O Units User's Manual for High-speed Analog Input Units (W592)
Take preventive measures
against the error that occurred in
the Communication Coupler Unit.
Mount the NX Units and End
Cover securely and secure them
with End Plates.
Correctly wire the Unit power
supply to the NX Units.
None
Correctly configure the power
supply system according to the
power supply design methods.
None