8 Troubleshooting
8 - 24
NX-series Analog I/O Units User’s Manual for Analog Input Units and Analog Output Units (W522)
Event name
NX Unit Output Synchronization Error
Event code
80210000 hex
Meaning
An output synchronization error occurred in the NX Unit.
Source
Depends on where the Support
Software is connected and the
system configuration.
Source details
NX Unit
Detection
timing
Continuously
Error
attributes
Level
Minor fault
Log category
System
Recovery
For the NX bus of CPU Units
Reset the error in the NX Bus Function Module.
For Communications Coupler Units
Reset all of the errors in the Controller.
Effects
User program
Continues.
Operation
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.
Sys-
tem-defined
variables
Variable
Data type
Name
None
---
---
Cause and
correction
Assumed cause
Correction
Prevention
For the NX bus of CPU Units
I/O refreshing on the NX bus is
not performed normally due to an
error in the CPU Unit.
Check the error that occurred in
the CPU Unit and perform the
required corrections.
Take preventive measures against
the error that occurred in the CPU
Unit.
For Communications Coupler Units
The communications cable con-
nected to the Communications
Coupler Unit is broken or the con-
nection is faulty.
Replace the communications
cable or wire the cable correctly.
Wire the communications cable
correctly.
The communications cable is
affected by noise.
Set the Consecutive
Communications Error Detection
Count parameter for the
Communications Coupler Unit to a
suitable value that will not cause
problems in operation.
Implement noise
countermeasures if there is
excessive noise.
Implement noise
countermeasures. Refer to the
operation manuals for the specific
Units for noise countermeasures.
Attached
information
None
Precautions/
Remarks
None
Summary of Contents for NX-AD series
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