Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set User Manual
Page 433
Axis Motion
Chapter 12
12-61
This section covers the following topics:
Topic:
On page:
Single-Digit F--words
12-61
External Deceleration Feedrate Switch
12-62
You can select special feedrates that are assigned in AMP. The feedrate for
rapid moves described on page 12-62 is such a feedrate as is the feedrate
for dry run described in chapter 7. This section covers the feedrates
assigned in AMP for the single-digit F--word and the external feedrate
switch.
Program a one-digit numeric value (1-9) following the F--word to select
various pre-set feedrates. The digits 1-9 have corresponding numeric
feedrate values. These feedrates are defined in AMP by your system
installer. They also can be entered using the single-digit feedrate table
described on page 3-27.
When programming a single-digit F--word it must be programmed with no
decimal point and a single digit. For example, if you program F1.0 instead
of F1, a feedrate of 1.0 is assigned in the current feedrate mode.
Important: Single-digit feedrates are always entered as per minute
feedrates (IPM or MMPM) regardless of the current feedrate mode. When
a single-digit feedrate is programmed, the control automatically switches to
the IPM or MMPM mode. The control automatically switches back to the
previously active feedrate mode when the next feedrate is programmed that
is not a single-digit feedrate.
If a single-digit feedrate (F1-F9) is programmed but has a value of zero in
the single-digit feedrate table, an error results indicating that no feedrate
has been programmed.
Single-digit F--word feedrates are affected by the setting of the
<FEEDRATE OVERRIDE> switch. Blocks that are programmed to move
at the rapid feedrate are still executed in the rapid mode.
Important: A programmed F0 corresponds to the maximum grinding
feedrate (not normally the rapid feedrate) set in AMP by your system
installer. F0 generates an error if the feature is not used.
12.8
Special AMP Assigned
Feedrates
12.8.1
Single-Digit F- words