Omron NY532-1500 Reference Manual page 636

5 Common Command Instructions
Precautions for Correct Use Precautions for Correct Use
The values that are written by this instruction are not saved in non-volatile memory in the CPU
Unit. Any values that are written are lost when the power supply to the Controller is turned OFF,
when settings are downloaded, or when the MC Function Module is restarted. They return to the
values that were set from the Sysmac Studio. Use the Sysmac Studio and transfer the parame-
ters to save them to non-volatile memory.
Timing Charts
The following timing chart shows the operation for when 20 is written to _mcChkDec (Deceleration
Warning Value) in the axis parameter settings.
Execute
Done
Busy
CommandAborted
Error
ErrorID
Value of _mcChkDec
Re-execution of Motion Instructions
If Execute for the same instance of this instruction changes to TRUE while Busy is TRUE, the instruc-
tion is re-executed. When that happens, the instruction overwrites the previous values of the Target
(Write Target), ParameterNumber, and SettingValue with the values that are specified when Execute
changes to TRUE while Busy is TRUE.
Multi-execution of Motion Control Instructions
For details on multi-execution of motion control instructions, refer to the NJ/NX-series CPU Unit Motion
Control User's Manual (Cat. No. W507) or NY-series Industrial Panel PC / Industrial Box PC Motion
Control User's Manual (Cat. No. W559).
Errors
If an error occurs during instruction execution, Error will change to TRUE and parameters are not writ-
ten. The value before the instruction was executed will be held. You can find out the cause of the error
by referring to the value output by ErrorID (Error Code).
5-16
16#0000
1
NY-series Motion Control Instructions Reference Manual (W561)
20