Omron NX701-1700 User Manual page 172

5 Troubleshooting
Event name Data Not Saved to Battery-backup Memory
Meaning An error occurred in the software and data could not be saved in battery-backup memory during power-OFF process-
ing.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
An error occurred in the software.
Attached None
information
Precautions/ If this error occurs, the values of the following will be the values from the previous time the power supply was turned
Remarks ON.
• Retained variables (variables with a Retain attribute or variables in retained areas with AT specifications)
• Retained areas in the memory used for CJ-series Units
• Absolute encoder home offset data
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 5-7.
5 - 36
Source details
Major fault Recovery
Stops. Operation
Data type
---
Correction
Perform the following:
• Check the values of retained vari-
ables and the retained areas in the
memory used for CJ-series Units
and change them to the correct val-
ues.
• If the system uses a Servomotor
with an absolute encoder, turn ON
the power supply, and then turn ON
the Servo and check the actual cur-
rent position of the axis.
Event code 100A0000 hex
None Detection
timing
Cycle the power Log category
supply.
Stops.*
The variables with a Retain attribute and memory for CJ-
series Units in the DM, EM, and Holding Areas do not con-
tain the values from just before the power supply was
turned OFF. Unless suitable processing countermeasures
are implemented, normal user program execution or nor-
mal Unit operation may not be possible when the power is
turned ON next time.
Name
---
Prevention
None
NX-series CPU Unit Hardware User's Manual (W535)
At power ON or
Controller reset
System