Omron NX-SL3300 User Manual page 447

Event name NX Unit I/O Communications Error
Meaning An I/O communications error occurred in an NX Unit.
Source Depends on where the Support
Software is connected and the
system configuration.
Error attrib- Level
utes
Recovery
Effects User program
System-de- Variable
fined varia-
None
bles
Cause and Assumed cause
correction
[NX Bus of the CPU Unit]
An error occurred in the CPU
unit, which prevents the NX bus
communications from being car-
ried out normally.
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 unit power voltage is out of
the supported range, or the unit
power capacity is not sufficient.
There is a hardware error in the
NX Unit.
NX-series Safety Control Unit User's Manual (Z930)
Source details NX Unit
Minor fault
[NX Bus of the CPU Unit]
[Fail-soft Operation Setting is Stop]
Errors are reset in the NX Bus Function Module.
[Fail-soft Operation Setting is Fail-soft Operation]
Errors are reset in the NX Unit.
[Communications Coupler Unit]
[Fail-soft Operation Setting is Stop]
If errors are detected in the controller, errors are reset in the control-
ler.
If errors are not detected in the controller, errors are reset in the
Communications Coupler Unit and the NX Unit.
[Fail-soft Operation Setting is Fail-soft Operation]
Errors are reset in the Communications Coupler Unit and the NX
Unit.
Continues. Operation
Data type
None
Correction
Check the error in the CPU unit
and try the solutions specified in
Correction.
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 connecting the
Unit power supply and the NX
Units is broken, replace the pow-
er cable.
Configure the power supply sys-
tem correctly in accordance with
the power supply specifications.
If the error occurs again even af-
ter you make the above correc-
tion, replace the NX Unit.
12 Troubleshooting
Event code 80200000 hex
Detection tim-
ing
Log category System
The NX Unit will continue to operate.
Input data: Updating input values stops.
Output data: The output values depend on the
Load Rejection Output Setting.
Name
None
Prevention
Try the solutions specified in Pre-
vention for the error in the CPU
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
Configure the power supply sys-
tem correctly in accordance with
the power supply specifications.
None
Continuously
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