Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 425)

Using QuickPath Plus
Chapter 15
15-7
Figure 15.3
Results of Unknown Intersection From Example 15.3
165
•
Y
X
5 10 15 20 25
20
15
10
5
If the control cannot determine an intersection point for the two linear
paths (for example if the paths are parallel) an error will occur.
Circular QPP is used to help the programmer when a drawing does not call
out the actual intersection of two consecutive tool paths and at least one of
the tool paths is circular. This prevents the programmer from having to do
any complex calculations to determine end points and start points when an
arc is involved.
For most cases of circular QPP there may be two possible intersection
points for the two defined blocks. Define which intersection is desired
using either G13 or G13.1 in the first of the two blocks. Programming
G13 will define the first intersection that occurs when the tool path of the
first block intersects with the second block. Programming a G13.1 will
define the second intersection that occurs when the tool path of the first
block intersects with the second block.
G Code Indicates
G13 First Intersection
G13.1 Second Intersection
15.3
Circular QuickPath Plus
(G13, G13.1)