5 Troubleshooting
5-14
NJ-series CPU Unit Hardware User’s Manual (W500)
10080000 hex Main Memory
Check Error
An error was
detected in the
memory check of
the main memory in
the CPU Unit.
• Conductive material has gotten
inside.
•Noise
• There is a software error.
• The CPU Unit has failed.
S page 5-34
100A0000 hex
(Ver. 1.10 or
later)
Data Not
Saved to Bat-
tery-backup
Memory
An error occurred in
the software and
data could not be
saved in battery-
backup memory
during power-OFF
processing.
• An error occurred in the soft-
ware.
S page 5-35
100B0000 hex Non-volatile
Memory Data
Corrupted
A file that must be
in non-volatile
memory is missing
or corrupted.
• The Controller power supply
was turned OFF while the
BUSY indicator was lit.
• The power supply to the Con-
troller was interrupted momen-
tarily while the BUSY indicator
was lit.
• The CPU Unit has failed.
S page 5-36
100C0000 hex
(Ver. 1.03 or
later)
Event Level
Setting Error
The settings in the
event level setting
file are not correct.
• The event level settings are not
correct because the power sup-
ply to the Controller was inter-
rupted or communications with
the Sysmac Studio were dis-
connected during a download
of the event level settings.
• The event level settings are not
correct because the power sup-
ply to the Controller was inter-
rupted during a Clear All
Memory operation.
• Non-volatile memory failed.
S page 5-37
40010000 hex PLC System
Processing
Error
A fatal error was
detected in the PLC
Function Module.
• An error occurred in the soft-
ware.
S page 5-37
40020000 hex PLC System
Processing
Error
A fatal error was
detected in the PLC
Function Module.
• An error occurred in the soft-
ware.
S page 5-38
40030000 hex PLC System
Processing
Error
A fatal error was
detected in the PLC
Function Module.
• An error occurred in the soft-
ware.
S page 5-38
00070000 hex Real-Time
Clock
Stopped
The oscillation of
the real-time clock
stopped. The real-
time clock is set to
an illegal time.
• The battery voltage is low.
• The battery connector has
come loose.
• The Battery is missing.
S U page 5-39
00080000 hex Real-Time
Clock Failed
The real-time clock
in the CPU Unit
failed.
• The CPU Unit clock has failed. S page 5-39
00
0
B0000 hex Low Battery
Voltage
The voltage of the
Battery has
dropped.
• The battery voltage is low.
• The battery connector has
come loose.
• The Battery is missing.
S U page 5-40
000C0000 hex CPU Unit
Overheat
The temperature
inside the CPU Unit
exceeded the spec-
ified value.
• The ambient operating tem-
perature is too high.
S page 5-40
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info
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