Chapter 9 Functions
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9.2.7 Circular interpolation control of designating center point
Operate interpolation up to trace of the circle after operate by starting command of positioning operation. And
then, Center point is center of circle and it is move to rotation direction of circular interpolation.
「The number of rotations of circular interpolation」can operate circular interpolation which is over 360
degrees with setting value.
There is no limit for composition of axis 2 that it needs to use circular interpolation control.
(1) Circular interpolation by method of absolute coordinate, designating center point
(a) Operate from start position and circular interpolate to target position with the trace of circle. And the circle
has radius which distance is to set midpoint position. 「Circular interpolation auxiliary point」is midpoint of
this circle.
(b) Moving direction depends on set direction on “circular interpolation mode” of operation data.
▪ 「Center, CW」 - Circular interpolation go clockwise from current position.
▪ 「Center, CCW」- Circular interpolation go counterclockwise from current position.
(c) If target position is same with start position, can progress circular interpolation. And the circle radius is
distance from midpoint to starting position (=target position)
Center, CW
Center, CCW
Center Center
Center
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