Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set User Manual
Page 365
Chapter 11
Coordinate Control
11-49
Example 11.16
Scaling with Absolute Mode Active
Program block
Comment
G07 G90 G00 X30. Z60.;
radius mode, absolute mode
G14.1 X0 P.5;
scale X axis only, by .5
G01 X12.;
feedrate move X
Z30.;
feedrate move Z
X20.;
feedrate move X
G14;
cancel scaling
G00 X30. Z60.;
rapid return
Figure 11.28
Results of Example 11.16
Original part contour
Contour after scaling
X axis only by .5 in
G90 absolute mode
6
Z
X
10
20
30
20
40
60
Grinding wheel
12026-I
When incremental mode (G91) is active, the control ignores the
programmed centers of scaling. The control performs scaling on the axes
programmed in the G14.1 block, but the scaling moves are referenced from
their current axis positions not the programmed center of scaling or the
active coordinate zero point.
Important: The center of scaling can be specified in either incremental or
absolute mode (G90/G91) in the G14.1 block. But unlike other features in
the control, you cannot program both modes in the same block.