Precautions for Correct Use
Here, the task period is the primary period. The periodic task is the primary periodic task.
Additional Information
The command position that is calculated in the same task period enables greater precision in
synchronization than the command position that was calculated in the previous task period.
However
, the axis number set for the Master (Master Axis) in the system-defined variable for
motion control must be lower than the axis number set for the Slave (Slave Axis) in the system-
defined variable for motion control.
Relationship between Axis Types and Position Types
The relationship between the axis types that you can monitor and position types that is monitored is
shown below
.
Axis Type
ReferenceType
_mcCommand or _mcLatestCommand _mcFeedback
Servo axis OK OK
Encoder axis
No
*1
OK
Virtual servo axis OK OK
Virtual encoder
axis
No
*1
OK
*1. A Position Type Selection Out of Range error (error code: 5430 hex) occurs when the instruction is execut-
ed.
SlaveDistance (Slave Axis Travel Distance), MasterDistance (Master Axis Travel
Distance), MasterDistanceInACC (Master Distance in Acceleration), and Master-
DistanceInDEC (Master Distance in Deceleration)
The velocity and position of the slave axis are determined by the ratio of the travel distances of the
master axis and the slave axis as shown in the following figure.
The master following distance shown in the following figure represents the position where the sync
start condition was met.
Master Axis T
ravel in Positive Direction
3 Axis Command Instructions
3-299
NY-series Motion Control Instructions Reference Manual (W561)
MC_MoveLink
3
Function
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