Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 392)

Axis Motion
Chapter 12
12-20
Circular-to-Linear Blocks
When the coordinates of the intersection of a circular path into a linear
path are not known, use the following format. A G13 or G13.1 must be
programmed in the first of the two blocks and absolute coordinate values
must be used.
Format:
G13G02I__K_; or G13G02R__;
G01A__Z__X__; G01A__Z__X__;
Important: K values are the normal integrand values when using this
format (measured from start point of arc to arc center). These are
described on page 12-5.
Example 12.11
Arc into Line Without Programming Intersection Point
G0X0Z0.;
G13G03K4I10F.1;
G01A0X10Z20;
Figure 12.12
Results of Arc into Line Without Intersection, Example 12.11
Z
X Control generates
intersection
2
4
6
8
10
2 4
6
8 10 12 14 16 18 20
12152-I
Important: R cannot be programmed to specify the arc radius for
linear-to-circular block combinations unless the two paths are tangent.