6 Troubleshooting
6 - 40
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
Event name Present Values of Retained Variables Not Saved Event code 10100000 hex
Meaning A forced shutdown is performed or an error occurred in the software and the present values of retained variables could
not be saved during power-OFF processing.
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.
Log category System
Effects User program Stops. Operation
Stops
*1
.
The values of the variables with a Retain attribute and
memory for CJ-series Units in the DM, EM, and Holding
Areas were not same as the values just before the power
interruption. Normal user program execution or normal
Unit operation may not be possible. (NX1P2 CPU Unit)
The values of the variables with a Retain attribute were
not same as the values just before the power interruption.
Normal user program execution or normal Unit operation
may not be possible. (NY-series Controllers)
*1. Refer to I/O Operation for Major Fault Level Controller Errors on page 6-8 for details.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
A forced shutdown is performed.
(NY-series Controllers)
Perform the following:
• Check the values of the retained
variables and the retained areas in
the memory used for CJ-series
Units and change them to the cor-
rect values. (NX1P2 CPU Unit)
• Check the values of the retained
variables and change them to the
correct values. (NY-series Control-
lers)
• 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.
Perform a shutdown with other
method than the forced shutdown.
An error occurred in the software. None
Attached
information
None
Precautions/
Remarks
The following values are initialized.
• Retained variables (variables with a Retain attribute or variables in retained areas with AT specifications) (NX1P2
CPU Unit)
• Retained variables (variables with a Retain attribute) (NY-series Controllers)
• Retained areas in the memory used for CJ-series Units (NX1P2 CPU Unit)
• Absolute encoder home offset data
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