Emotiontek MCU 2 Axis, Руководство пользователя

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Chapter 2. MC Programming
b) Commanding with I,J command
CW <End point[P variable 1]> <arc center[P variable 2]>
CCW <End point[P variable 1]> <arc center[P variable 2]>
The start point is the current position, so the end point and the circle center are
commanded in the above type, and only the P variable can be commanded. The P variable
can be indirectly designated as a L variable.
The center of the arc is directly commanded.
Enable the“
basic
parameter P61 I, J arc commanding method”. It is regarded as a method
of commanding the circle center with I, J, not a radius. In this case, the X-axis of
the P variable 2 corresponds to I and the Y-axis corresponds to J. I, J are vector
components seen from the start point to the center of a circle and are always commanded
as increments.
Make a right triangle like Fig.2.28, and designate its bottom as I, its height as J, and
its oblique side as a radius. When designating it as I, J, if the distance between the
start point and the circle center doesn’t coincide with the distance between the end
point and the circle center, then an alarm occurs.
Fig.2.28 I,J arc commanding function
+X
+Y
I
J
시점
종점
원호 중심
R
cw
ccw
End point
Circle
center
Start
point