Precautions for Correct Use
A displacement following error is calculated based on the MasterReferencePosition (Master Ax-
is Reference Position) and SlaveReferencePosition (Slave Axis Reference Position), instead of
the start position of the cam motion.
The following shows an example with a feeding cam for which the displacement of the end point
is not 0.
EndOfProfile EndOfProfile
*1
*2
*3
*
4
*5
*1. Cam table currently in use
*2. Command current position for slave axis
*3. Displacement following error to be calculated
*4. Cam table specified in CamT
able (Cam Table)
*5. Position in which the cam operation starts
In the calculation of the displacement following error, the phase to be monitored is calculated
based on the phase shift amount calculated in the preceding period.
Accordingly, while the MC_Phasing instruction is in execution, the calculation is based on the
phase shift amount for the control period immediately before the current one, and therefore the
calculation result does not match a value calculated by the MC_CamIn (Start Cam Operation)
instruction.
Re-execution of Motion Control Instructions
You cannot re-execute motion instructions with enable-type inputs.
Multi-execution of Motion Control Instructions
For details on multi-execution of motion control instructions, refer to the 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.
You can find out the cause of the error by referring to the value output by ErrorID (Error Code).
3 Axis Command Instructions
3-244
NY-series Motion Control Instructions Reference Manual (W561)
To Next Page
Loading...
