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by the X-Y coordinate of the final point expressed in units of resolution, and each circular arc is
defined by the arc radius, the starting angle, and the angular width of the arc. The zero angle
corresponds to the positive direction of the X-axis and the CCW direction of rotation is positive.
Angles are expressed in degrees, and the resolution is 1/256th of a degree. For example, the path
shown in Fig. A-14 is specified by the instructions:
VP
0,10000
CR
10000, 180, -90
VP
20000, 20000
10000
20000
20000
10000
Y
C
D
B
A
X
Figure A-14 - X-Y Motion Path
The first line describes the straight line vector segment between points A and B. The next segment is a
circular arc, which starts at an angle of 180
°
and traverses -90
°
. Finally, the third line describes the
linear segment between points C and D. Note that the total length of the motion consists of the
segments:
A-B
Linear
10000
units
B-C
Circular
R
Δ
θ π
2
360
= 15708
C-D
Linear
10000
Total
35708
counts
In general, the length of each linear segment is
L
Xk
Yk
k
=
+
2
2
180
i
Appendices
DMC-14x5/6
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