Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 366)

Axis Motion
Chapter 14
14-8
Example 14.6
Arc End Points Same As Start Points
Arc 1-Full Circle Arc 2-No Motion
G02I-5.K5.F.1; G02R7.07F.1;
or or
G02X15.Z5.I-5.K5.F.1; G02X15.Z5.R7.07F.1;
Figure 14.6
Results of An Arc with End Point Equal To Start Point, Example 14.6
Full circle
Arc 1
0 degree center angle arc
(no axis motion)
Arc 2
5 10 5 10
15
10
15
10
X
Z Z
X
end
start
Center defined
by I and J
start
end
Center defined by R
If you program a radius command, R, in the same block as I, and/or K, the
control gives the R priority. The I-, and/or K-words are then ignored.
Important: Your system installer can specify the maximum allowed
difference between the starting radius of the arc and the ending radius of
the arc. If the difference exceeds the allowed value set in AMP, an error
occurs.