Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 370)

Coordinate Control
Chapter 11
11-54
3. Use the up and down cursor keys to move the block cursor to the
default value you want to change. The selected default value appears
in reverse video.
4. To replace stored default scaling magnification value, key-in the new
default value and press the {REPLCE VALUE} softkey.
While scaling is enabled, the following restrictions apply:
Scaling only affects programmed axis motion. All manual axis motions
and PAL axis mover motions are performed at full scale
Scaling does not affect M, F, S, T, and B word functions. The F word is
scaled if the control is in inverse time mode (G93). Scaling while in
inverse time mode is applied as follows:
Programmed F word
Scaled F word (when in G93 mode) = ----------------------
Largest Scale Factor
Scaling is disabled during G27, G28, and G30 automatic home
operations. For a G29 automatic return from home operation, scaling is
re-enabled after the intermediate point is reached
When changing work coordinates (G54-G59.3), the center of scaling is
transferred from the old work coordinate system to the new work
coordinate system. The offset distance from the wheel position in the
old work coordinate system to the wheel position in the new work
coordinate system is not scaled
Scaling is applied to G52 and G92 offsets. The center of scaling is
shifted when the work coordinate systems are shifted by a G92 offset or
by changing coordinate offset values. When using a G52 offset, the
center of scaling is adjusted to the new local coordinate systems
Scaling is not applied to external offsets, wheel radius, wheel geometry,
or wheel length offsets.
Scaling is not applied to blocks containing dwells (G04), data setting
codes (G10., G10.1), or macro calls (G56, G66, G66.1). In the case of
macro calls, the data passed via local parameters is not scaled unless the
data is used inside of the macro for motion.
G22, programmable zone 2 check on and data setting is not scaled
G53, absolute positions moves is not scaled
Rotary axes cannot be scaled
11.11.3
Scaling Restrictions