Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 203)

Running a Program
Chapter 7
7-21
AXIS INHIBIT can be activated to inhibit motion of any or all of the axes
depending on the configuration determined by the system installer. This
includes jogging moves. When axis motion has been inhibited for a single
axis the remaining axes still execute as normal and the axis location
display is updated as if axis motion was occurring on all axes.
WARNING: Axes not selected for axis inhibit move as they
would if the program were executed in automatic mode.
The Axis Inhibit feature may be activated using a switch installed by the
system installer (see documentation provided by the system installer) or by
using the {FRONT PANEL} softkey (see chapter 2). The control must be
in cycle stop or E-STOP to activate or deactivate the Axis Inhibit feature.
Any attempt to activate or deactivate the feature during program execution
or when in cycle suspend or feedhold states is ignored. Attempts to
activate the Axis Inhibit feature during jogging are also ignored.
The spindle motion may also be inhibited by using a switch installed by the
system installer. See the documentation provided by the system installer.
The spindle cannot use the {FRONT PANEL} softkey to activate the Axis
Inhibit feature.
Program execution with the Axis Inhibit feature is started by pressing the
<CYCLE START> button provided a program has been selected for
execution (see section 7.3).
Program execution with Axis Inhibit can be stopped at any time by using
any of the methods described in section 7.7 or by pressing the
<EMERGENCY STOP> button.
The dry run function permits the checking of a part program to make sure
that machine motions are correct. It is intended to be executed without the
material or part mounted. The dry run function replaces all programmed
feedrates with the maximum cutting feedrate. Jogging moves and moves
that are programmed using rapid traverse (G00) are not effected by dry
run.
The Axis Inhibit feature may be used in conjunction with Dry Run if
desired.
If the external decel feature is used simultaneously with the Dry Run
feature the feedrates that are assigned to External decel feature are used
and the Dry run request is ignored.
7.7.3
Dry Run Mode