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Changing the spindle speed and feed rate – HEIDENHAIN TNC 640 (34059x-01) ISO programming User Manual

Page 371

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HEIDENHAIN TNC 640

371

13.3 Spindle Speed S

, F

eed Rat

e

F and Miscellaneous F

unctions 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 knob for spindle speed is only functional on
machines with infinitely variable spindle drive.