Error Descriptions
This section describes errors that occur in the High-speed Analog Input Units.
Event name
Non-volatile Memory Hardware Error
Event code
00200000 hex
Meaning
An error occurred in non-volatile memory.
Source
Depends on where the Support
Software is connected and the
system configuration.
Source details
NX Unit
Detection tim-
ing
When power is
turned ON to
the NX Unit
Error attrib-
utes
Level
Minor fault
Log category
System
Recovery
For the NX bus of CPU Units
Cycle the power supply to the Unit or restart the NX bus.
For Communications Coupler Units
Cycle the power supply to the Unit or restart the Slave Terminal.
If the errors are detected in the Controller, reset all of the errors in the Controller.
Effects
User program
Continues.
Operation
I/O refreshing for the NX Unit stops. Messages
cannot be sent to the NX Unit.
System-de-
fined varia-
bles
Variable
Data type
Name
None
---
---
Assumed cause
Correction
Prevention
Non-volatile memory failure
For the NX bus of CPU Units
Cycle the power supply to the
Unit or restart the NX bus. If the
error persists even after you
make the above correction, re-
place the relevant NX Unit.
For Communications Coupler
Units
Cycle the power supply to the
Unit or restart the Slave Termi-
nal. If the error persists even af-
ter you make the above correc-
tion, replace the relevant NX
Unit.
None
Attached in-
formation
None
Precautions/
Remarks
None
9 Troubleshooting
9 - 14
NX-series Analog I/O Units User’s Manual for High-speed Analog Input Units (W592)
