X
Y
EndPoint(X, Y)
AuxPoi
nt(X, Y)
Start point
Precautions for Correct Use
• The points are considered to be on a straight line if the distance between the border point
and the line that connects the start and end point is less than one pulse for both the X and Y
coordinates.
•
An error occurs if the start point, border point, and end point are the same point.
The start point, border point, and end point are considered to be the same point if the com-
mand positions are the same for the command unit.
If the command positions in the command unit are different, the points are not considered to
be the same point and an error does not occur even if the positions are the same when they
are converted to pulses.
If the start point and the end point are the same point, a complete circle is drawn with the start point
and the border point as the diameter
. PathChoice is specified as the circular interpolation direction.
X
Y
AuxPoint(X, Y)
Start point, EndPoint(X, Y)
Center
The current position is the starting point. Circular interpolation is performed for circle specified by the
center point AuxPoint(X,Y) to the end point EndPoint(X,Y).
PathChoice is used to specify the circular interpolation direction.
A complete circle is drawn when the start point and end point are at the same point.
If the radius from the specified center to the start point is different to the radius to the end point, the
average of the two radiuses is used to perform circular interpolation. In this case, the center is calcu-
lated in the same way as specifying the radius, and the calculated radius and center are used.
4 Axes Group Instructions
4-52
NY-series Motion Control Instructions Reference Manual (W561)
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