Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 424)

Using QuickPath Plus
Chapter 15
15-6
No Intersection Known
This feature of QPP allows the programmer to define two intersecting,
consecutive, linear tool paths without knowing the point that the actual
intersection takes place at. Both of these blocks must be linear blocks and
programmed in absolute mode. The angle of both of these lines must be
known.
This is done with a sequence of two linear blocks (in the current plane) in
which QPP is used to calculated the end point of the first block. The start
point of the first block is the current tool position.
Important: The second block of these two blocks must be programmed in
absolute mode. Any attempt to program the second block in incremental
will generate an error.
The format for these blocks is as follows:
,A__ ;
,A__ X__ Y__ ;
Where : Is :
,A Angle - This word is always displayed as by the control even if the angle is
named differently in AMP. If you have a 9/240 program that uses a different
address than ,A and you want to run the program on a 9/260 or 9/290 control the
angles will work but the control names them ,A.
XY End Point of second block - These are the actual coordinate location of the end
point of the second block. They must be programmed as absolute values and
must be axes in the current plane.
Important: There may be up to four program blocks between the two
blocks in the above format, however, these blocks may not generate axis
motion in the current plane.
Both of these blocks must be programmed in the same plane. If the current
plane is changed between these two blocks execution (G17, G18, or G19 is
programmed) the control will generate an error.
Example 15.3
QPP When An Intersection is Unknown
N10 G00 X25 Y0 F100;
N20 G01 ,A90;
N30 ,A165 X5 Y20.;
N40 M30;