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6 Troubleshooting
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
6-2 Troubleshooting
6
6-2-4 Error Descriptions
Event name Real-Time Clock Failed Event code 00080000 hex
Meaning The real-time clock in the CPU Unit failed.
Source PLC Function Module Source details None Detection
timing
At power ON or
Controller reset
Error attributes Level Minor fault Recovery Cycle the power
supply.
Log category System
Effects User program Continues. Operation The System Time is not defined. The clock information
recorded by CJ-series Units is also not defined.
System-defined
variables
Variable Data type Name
_CurrentTime DATE_AND_TIME System Time
Cause and
correction
Assumed cause Correction Prevention
The CPU Unit clock has failed. Replace the CPU Unit. None
Attached
information
None
Precautions/
Remarks
None
Event name Low Battery Voltage Event code 000B0000 hex
Meaning The voltage of the Battery has dropped.
Source PLC Function Module Source details None Detection
timing
Continuously
Error attributes Level Minor fault Recovery Error reset Log category System
Effects User program Continues. Operation No affected
System-defined
variables
Variable Data type Name
_SelfTest_LowBattery BOOL Low Battery Flag
Cause and
correction
Assumed cause Correction Prevention
The battery voltage is low. Replace the Battery. Regularly replace the Battery.
The battery connector has come
loose.
Reconnect the connector and make
sure it is mated correctly.
Check for vibration and shock.
The Battery is missing. Install a Battery. Install a Battery.
Attached
information
None
Precautions/
Remarks
You may lose the clock data the next time that the power supply is interrupted. You can change the event level to the
observation level. If you change the level to the observation level, recovery procedures are not required.
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