HEIDENHAIN TNC 640 User Manual page 630

16
Defining the speed:
Show the soft-key row with special functions
Press the TURNING PROGRAM FUNCTIONS soft
key
Press the FUNCTION TURNDATA soft key
Press the TURNDATA SPIN soft key.
Select the function for speed entry: Press the
VCONST: soft key
Cycle G800 limits maximum speed with eccentric
turning. The control restores a programmed limitation of
the spindle speed after eccentric turning.
To reset the speed limitation, program FUNCTION
TURNDATA SPIN SMAX0.
If the maximum speed is achieved the control displays
SMAX instead of S in the status display.
Example
N30 FUNCTION TURNDATA SPIN VCONST:ON VC:100
GEARRANGE:2*
N30 FUNCTION TURNDATA SPIN VCONST:OFF S550*
...
630
Turning | Basic functions (option 50)
Definition of a constant cutting speed in gear range 2
Definition of a constant spindle speed
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017