Omron NJ501-1 Series User Manual page 191

Event name Non-volatile Memory Life Exceeded
Meaning The specified number of deletions for non-volatile memory was exceeded. Or, the number of bad blocks in memory
exceeded the specified value.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
Non-volatile memory life expired.
Attached None
information
Precautions/ None
Remarks
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 5-6.
Event name Non-volatile Memory Restored or Formatted
Meaning An error was detected in the non-volatile memory check and file system recovery or formatting was executed. Previous
files may have been deleted.
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.
Attached Attached information 1: Recovered content (00000000 hex: File system recovery successful, 00000001 hex: Format-
information ted)
Precautions/ Make sure that the projects match and that the device operates correctly, or transfer the project again. If you cycle the
Remarks power to the Controller or reset the Controller before you do this, unexpected operation may occur and can be very
dangerous.
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 5-6.
NJ-series CPU Unit Hardware User's Manual (W500)
Source details
Major fault Recovery
Stops. Operation
Data type
---
Correction
Replace the CPU Unit.
Source details
Major fault Recovery
Stops. Operation
Data type
---
Correction
Compare the project with the project
on the Sysmac Studio. If they match,
cycle the power supply to the Control-
ler or reset the Controller to see if that
clears the error. If the error is cleared,
check that the device operates cor-
rectly.
If the comparison shows a mismatch,
if the error is not cleared, or if the
device does not operate correctly,
clear all of memory and then down-
load the project from the Sysmac Stu-
dio again. If cycling the power supply
to the Controller or resetting the Con-
troller does not clear the error, the
memory is corrupted. Replace the
CPU Unit.
Unexpected operation may occur and
can be very dangerous if the power to
the Controller is cycled or the Control-
ler is reset before you download the
project again.
5 Troubleshooting
Event code 000E0000 hex
None Detection
timing
Cycle the power Log category
supply.
Stops.*
Name
---
Prevention
---
Event code 10010000 hex
None Detection
timing
Cycle the power Log category
supply or reset
the Controller.
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.
Continuously
System
5
At power ON or
Controller reset
System
5-25