HEIDENHAIN TNC 620 (340 56x-02) ISO programming - Manual (Page 131)

HEIDENHAIN TNC 620 131
5.1 Ent
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Spindle speed S
The spindle speed S is entered in revolutions per minute (rpm) in a T
block. Instead, you can also define the cutting speed Vc in m/min.
Programmed change
In the part program, you can change the spindle speed in a T block by
entering the spindle speed only:
U To program the spindle speed, press the SPEC FCT
key.
U Press the PROGRAM FUNCTIONS soft key.
U Press the DIN/ISO soft key.
U Press the S soft key.
U Enter the new spindle speed
Changing during program run
You can adjust the spindle speed during program run with the
spindle-speed override knob S.