Plc Function Module, Category Name: _Plc - Omron NJ501-1 Series User Manual

Variable name _RetainFail
Meaning Retention Failure Flag
Function TRUE at the following times (failure of retention during power interruptions).
• When an error is detected in the battery-backup memory check at startup.
FALSE at the following times (no failure of retention during power interruptions).
• When no error is detected in the battery-backup memory check at startup.
• When the user program is downloaded.
• When the Clear All Memory operation is performed.
Note When the encoder home offset data is not retained, the status is given in the error status of the axis vari-
Data type BOOL
R/W access R
Usage in user program Possible.
 Functional Classification: Version
Variable name _UnitVersion
Meaning Unit Version
Function The unit version of the CPU Unit is stored.
The integer part of the unit version is stored in element number 0.
The fractional part of the unit version is stored in element number 1.
Example 1) If the unit version is 1.08, "1" is stored in element number 0 and "8" is stored in element number 1.
Example 2) If the unit version is 1.10, "1" is stored in element number 0 and "10" is stored in element number 1.
Data type ARRAY[0..1] OF USINT
R/W access R
Usage in user program Possible.
*1 This system-defined variable was added for unit version 1.08 of the CPU Unit.
A-7-2

PLC Function Module, Category Name: _PLC

 Functional Classification: Errors
Variable name _PLC_ErrSta
Meaning PLC Function Module Error Status
Function TRUE when there is a Controller error that involves the PLC Function Module.
FALSE when there is no Controller error that involves the PLC Function Module.
Refer to A-6-4 Meanings of Error Status Bits for the meanings of the error status bits.
Data type WORD
R/W access R
Usage in user program Possible.
NJ-series CPU Unit Hardware User's Manual (W500)
able, and not in this flag.
Retained Not retained.
Related instruc- ---
tions
*1
Retained Not retained.
Related instruc- ---
tions
Retained
Related instruc-
tions
Global/local
Range of values
Network Publish
Global/local
Range of values
Network Publish
Global/local
Range of values
Not retained. Network Publish
• GetPLCError
You can use the following instruction to clear this variable.
• ResetPLCError
Appendices
Global
TRUE or FALSE
Not published.
Global
0 to 99
Published.
Global
16#0000 to 16#00F0
Published.
A-119