HEIDENHAIN TNC 320 (340 551-02) - Manual (Page 46)

46 2 Manual Operation and Setup
2.3 Spindle Speed S
, F
eed Rat
e
F and Miscellaneous F
u
nctions M
Changing the spindle speed and feed rate
With the override knobs you can vary the spindle speed S and feed
rate F from 0% to 150% of the set value.
The override dial for spindle speed is only functional on
machines with infinitely variable spindle drive.
The machine manufacturer can further limits the ranges of
the override dials (minFeedOverride,
maxFeedOverride, minSpindleOverride and
maxSpindleOverride machine parameters).
The minimum and maximum spindle speeds entered as
machine parameters are not fallen short of or exceeded,
respectively.
If the MP minSpindleOverride=0%, then the setting
spindle override=0 leads to a spindle stop.