Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 204)

Running a Program
Chapter 7
Running a Program
Chapter 7
7-22
The switch may be used to modify the cutting
feedrate. The system installer determines in AMP if rapid feedrates are
overrides by or the OVERRIDE> switch during Dry Run.
CAUTION: When testing a program using Dry Run the control
still recognizes and executes M, B, S, and T--codes. To ignore
M, B, S, and T--codes execute Dry Run in conjunction with
miscellaneous function lock (section 7.1.2).
WARNING: It is possible for the system installer to write PAL
to allow the operator to select DRY RUN at any time. This
means that during normal automatic operation the operator can
select maximum cutting feedrate and replace all feedrates
programmed with an F word with the AMP assigned DRY RUN
feedrate. This may result in damage to the machine, part, or
injury to the operator.
Figure 7.3
Dry Run
Cutting
tool
Mill bed
The Dry Run 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 (chapter 2).