Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 426)

Using QuickPath Plus
Chapter 15
15-8
Figure 15.4
G13 vs G13.1 Intersections
Second block if G13 programmed
Second block if G13.1 programmed
1st block
1st block
When programming Circular QPP, remember:
When there is only one intersection involved with the tool paths, the
G13 and G13.1 codes may be programmed interchangeably, however,
one must be programmed.
The G13 or G13.1 code must be programmed in the first of the two
blocks defining the two tool paths.
If the arc is programmed with an R word, the two tool paths must be
tangent. The sign (+ or -) of the R word will determine the arc is less
than or greater than 180 degrees as discussed in chapter 16.
The angle word (,A) may not be programmed in a circular block.
Both absolute coordinate values in the current plane must be
programmed for the second block. Both must be programmed
regardless of whether the final coordinates change or not.