Chapter 5 Positioning Instructions
5 - 61
5.3.6 Linear Interpolation Start-up Function Block
•In linear interpolation start-up, both X and Y axes are used in the manner that the movement paths of
the 2 axes, from the start address (present stationary position) to the target address (position), is
linear.
•This method can be classified into absolute coordinates control and Incremental coordinates control.
For details, see 3.1.2.
•At the linear interpolation start-up instruction, the axis having greater movement for positioning
becomes the main axis automatically. If the 2 axes move the same distance, X-axis is set up as the
main axis.
•Here, the velocity of the subsidiary axis does not follow the setting of the operation data. The
operation velocity, accelerating and decelerating times, and bias velocity are calculated automatically
with the formula below to perform the operation.
•The operation patterns available for linear interpolation are termination and continuous operation only.
If the interpolation operation is started when the main axis is set up to be continuous, the XGB
internal positioning does not trigger error and performs the operation of the main axis by changing it
to be continuous. If the sub-axis is set to be continuous, it does not affect linear interpolation.
(1) Linear Interpolation Start-up Instruction (APM_LIN)
Form Variable
Data
Type
Description
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