5 Troubleshooting
5-32
NJ-series CPU Unit Hardware User’s Manual (W500)
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 5-6.
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 5-6.
Event name Non-volatile Memory Life Exceeded Event code 000E0000 hex
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 Source details None Detection
timing
Continuously
Error attributes Level Major fault Recovery Cycle the power
supply.
Log category System
Effects User program Stops. Operation Stops.*
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
Non-volatile memory life expired. Replace the CPU Unit. ---
Attached
information
None
Precautions/
Remarks
None
Event name Non-volatile Memory Restored or Formatted Event code 1001 0000 hex
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 Source details None Detection
timing
At power ON or
Controller reset
Error attributes Level Major fault Recovery Cycle the power
supply or reset
the Controller.
Log category System
Effects User program Stops. Operation Stops.*
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
The Controller power supply was
turned OFF while the BUSY indicator
was lit.
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.
Do not turn OFF the power supply
while the BUSY indicator is lit.
The power supply to the Controller
was interrupted momentarily while the
BUSY indicator was 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.
Attached
information
Attached information 1: Recovered content (00000000 hex: File system recovery successful, 00000001 hex: Format-
ted)
Precautions/
Remarks
Make sure that the projects match and that the device operates correctly, or transfer the project again. If you cycle the
power to the Controller or reset the Controller before you do this, unexpected operation may occur and can be very
dangerous.
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