Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 377)

Axis Motion
Chapter 14
14-19
In the G95 mode (feed per revolution), G04 suspends execution of
commands in the next block for the time it takes the controlling spindle to
turn a designated number of revolutions.
G95G04 P__; X__; U__;
Specify the required dwell length by either a P-, X-, or U-word in units of
spindle revolutions. It does not matter which of these three words you use,
as long as only one appears in the same block. The allowable range is
0.001 - 99999.999 revolutions.
There are two types of mirroring. They are:
Mirror image: Activate through:
programmable programming a G50.1 and G51.1
manual PAL or the {FRONT PANEL} softkey
Programmable Mirror Image (G50.1, G51.1)
Use the programmable mirror image feature to mirror (duplicate yet
reversed) axis motion commands about some defined plane. Activate this
feature using the G51.1 code. Cancel it using the G50.1 code. Mirroring
takes place about the axis position specified in the G51.1 code.
The format for the G51.1 code is:
G51.1X__ Z__ ;
The axis motion commands in any following blocks are executed with the
motion direction reversed (including incremental moves) as if a mirror
were placed on the designated point parallel with the axis. The G51.1 code
is modal and remains in effect until cancelled by a G50.1 command.
Use the axis word programmed with the G51.1 command to define the
mirroring location. The defined location intercepts the programmed axis at
the programmed position. If only one axis is programmed, the mirroring
plane is perpendicular to that axis. If more than one axis is programmed,
the mirror plane passes through these points.
Important: The control mirrors only those axes that are programmed out
in the G51.1 block. Axes not programmed in the G51.1 block execute
normally.
A G50.1 block cancels the mirror image function.
G50.1X__ Z__ ;
14.3.2
Dwell - Number of Spindle
Revolutions
14.4
Mirror Image (G50.1, G51.1)