Omron NX1P2 series User Manual page 256

6 Troubleshooting
Event name Non-volatile Memory Data Corrupted
Meaning A file that must be in non-volatile memory is missing or corrupted.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
The Controller power supply was
turned OFF while the BUSY indicator
was lit.
The power supply to the Controller
was interrupted momentarily while the
BUSY indicator was lit.
The CPU Unit has failed.
Attached None
information
Precautions/ None
Remarks
*1 For details, refer to I/O Operation for Major Fault Level Controller Errors on page 6-8.
Event name Event Level Setting Error
Meaning The settings in the event level setting file are not correct.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
The event level settings are not cor-
rect because the power supply to the
Controller was interrupted or commu-
nications with the Sysmac Studio
were disconnected during a download
of the event level settings.
The event level settings are not cor-
rect because the power supply to the
Controller was interrupted during a
Clear All Memory operation.
Non-volatile memory failed.
Attached None
information
Precautions/ None
Remarks
*1 For details, refer to I/O Operation for Major Fault Level Controller Errors on page 6-8.
6 - 38
Source details
Major fault Recovery
Stops. Operation
Data type
---
Correction
Clear all of memory and then down-
load the project from the Sysmac Stu-
dio.
If this error remains even after making
the above corrections, replace the
CPU Unit.
Source details
Major fault Recovery
Stops. Operation
Data type
---
Correction
Perform a Memory All Clear operation
and then transfer the event level set-
ting file again.
If the error persists even after you
make the above correction, replace
the CPU Unit.
Event code 100B0000 hex
None Detection
timing
Cycle the power Log category
supply or reset
the Controller.
*1
Stops.
Name
---
Prevention
Do not turn OFF the power supply
while the BUSY indicator is lit.
Take appropriate measures to ensure
that the specified power with the rated
voltage and frequency is supplied in
places where the power supply is
unstable.
None
Event code
100C0000 hex
None Detection
timing
Cycle the power Log category
supply or reset
the Controller.
*1
Stops.
Name
---
Prevention
Do not interrupt the power supply to
the Controller or disconnect commu-
nications with the Sysmac Studio
during a download of the event level
settings.
Do not interrupt the power supply to
the Controller during a Clear All Mem-
ory operation.
None
NX-series NX1P2 CPU Unit Hardware User's Manual (W578)
At power ON or
Controller reset
System
At power ON or
Controller reset
System