HEIDENHAIN TNC 640, User Manual, Page: 535 / 948

Special Functions | Global Program Settings (option 44)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
535
Feed rate factor
Refer to your machine manual.
Your machine tool builder can also disable individual
settings possibilities within the
Global Program Settings
function.
With the
Feed rate factor
option, the
Global Program Settings
function allows you to modify the current machining feed rate. The
input corresponds to a percentage. Input range: 1 % to 1000 %
The current machining feed rate is a combination of the
programmed feed rate and the current position of the
feed rate potentiometer.
The
Feed rate factor
option in the
Global Program
Settings
has no influence on a programmed rapid
traverse (
FMAX
).
All feed rates can jointly be limited using the feed rate
limit (
F MAX
soft key. The
Feed rate factor
in the
Global
Program Settings
function has no influence on the
limited feed rate!
Further information: "Feed rate limit F MAX",
page 733
Control display
The general status display shows the following icons and
information:
Ovr
Result of the feed rate potentiometer setting
No icon and no value are displayed for the feed
rate limit (
F MAX
soft key)!
Feed rate factor
active (default icon of the
Global
Program Settings
function)
F
Result of all modifications = current feed rate
The control displays the value of the
feed rate factor
on the
GS
tab of the additional status display.