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8 Troubleshooting
8 - 22
NX-series Analog I/O Units User’s Manual for Analog Input Units and Analog Output Units (W522)
Event name
NX Unit I/O Communications Error
Event code
80200000 hex
Meaning
An I/O communications error occurred in an 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
When Fail-soft Operation Is Set to
Stop
Reset the error in the NX Bus Function Module.
When Fail-soft Operation Is Set to
Fail-soft
Reset the error in the NX Unit.
For Communications Coupler Units
When Fail-soft Operation Is Set to
Stop
If the errors are detected in the Controller, reset all of the errors in the
Controller.
If the errors are not detected in the Controller, reset errors in the Com-
munications Coupler Unit and NX Unit.
When Fail-soft Operation Is Set to
Fail-soft
Reset errors in the Communications Coupler Unit and NX Unit.
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
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Summary of Contents for NX-AD series
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