Error Table; Errors For Self Diagnosis - Omron NJ501-1 Series User Manual

5-2-3

Error Table

The errors (i.e., events) that can occur in the PLC Function Module are given on the following pages.
The following abbreviations and symbols are used in the event level column.
Abbreviation
Maj Major fault level
Prt Partial fault level
Min Minor fault level
Obs Observation
Info Information
Symbol
S Event levels that are defined by the system.
U Event levels that can be changed by the user.*
* This symbol appears only for events for which the user can change the event level.
A version in parentheses in the Event code column is the unit version of the CPU Unit when the event
was added.
Refer to the NJ-series Troubleshooting Manual (Cat. No. W503) for all NJ-series event codes.

Errors for Self Diagnosis

Event code Event name
0009 0000 hex DIP Switch
Setting Error
000D 0000 hex Internal NJ-
series Bus
Check Error
000E 0000 hex Non-volatile
Memory Life
Exceeded
1001 0000 hex Non-volatile
Memory
Restored or
Formatted
1002 0000 hex Non-volatile
Memory Data
Corrupted
NJ-series CPU Unit Hardware User's Manual (W500)
Name
Meaning
Meaning Assumed cause
An error was • There is an error in the DIP
detected in the DIP switch setting.
switch setting.
A fatal error was • Conductive material has gotten
detected on the inside.
internal bus.
• Noise
• The CPU Unit has failed.
The specified num- • Non-volatile memory life
ber of deletions for expired.
non-volatile mem-
ory was exceeded.
Or, the number of
bad blocks in mem-
ory exceeded the
specified value.
An error was • The Controller power supply
detected in the non- was turned OFF while the
volatile memory BUSY indicator was lit.
check and file sys-
• The power supply to the Con-
tem recovery or for-
troller was interrupted momen-
matting was
tarily while the BUSY indicator
executed. Previous
was lit.
files may have been
deleted.
A file that must be • The Controller power supply
in non-volatile was turned OFF while the
memory is missing BUSY indicator was lit.
or corrupted.
• The power supply to the Con-
troller was interrupted momen-
tarily while the BUSY indicator
was lit.
• The CPU Unit has failed.
5 Troubleshooting
Level
Maj Prt Min Obs Info
S page 5-24
S page 5-24
S page 5-25
S page 5-25
S page 5-26
5
Reference
5-13