Omron NJ501-1 Series User Manual page 194

5 Troubleshooting
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 This event code was added for unit version 1.03 of the CPU Unit.
*2 For details, refer to I/O Operation for Major Fault Level Controller Errors on page 5-6.
Event name Real-Time Clock Stopped
Meaning The oscillation of the real-time clock stopped. The real-time clock is set to an illegal time.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
_CurrentTime
Cause and Assumed cause
correction
The battery voltage is low.
The battery connector has come
loose.
The Battery is missing.
Attached None
information
Precautions/ This error is checked only when the power is turned ON. You can change the event level to the observation level. If you
Remarks change the level to the observation level, recovery procedures are not required.
5-28
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.
Source details
Minor fault Recovery
Continues. Operation
Data type
DATE_AND_TIME
Correction
Replace the Battery. Then adjust the
real-time clock time.
Reconnect the connector and make
sure it is mated correctly. Then adjust
the real-time clock time.
Install a Battery. Then adjust the real-
time clock time.
Event code
100C 0000 hex
None Detection
timing
Cycle the power Log category
supply or reset
the Controller.
*2
Stops.
Name
---
Prevention
Do not interrupt the power supply to
the Controller or disconnect commu-
nications with the Sysmac Studio dur-
ing a download of the event level
settings.
Do not interrupt the power supply to
the Controller during a Clear All Mem-
ory operation.
None
Event code 0007 0000 hex
None Detection
timing
Error reset Log category
The System Time is not defined. The clock information
recorded by CJ-series Units is also not defined.
Name
System Time
Prevention
Regularly replace the Battery.
Check for vibration and shock.
Install a Battery.
NJ-series CPU Unit Hardware User's Manual (W500)
*1
At power ON or
Controller reset
System
At power ON or
Controller reset
System