HEIDENHAIN TNC 640 (34059x-04) ISO programming - Manual (Page 82)

Introduction
2.4 Status displays
2
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TNC 640 | User's Manual for DIN/ISO Programming | 3/2014
Adaptive Feed Control (AFC tab, software option)
The TNC displays the AFC tab only if the function is
active on your machine.
Soft key Meaning
No direct
selection
possible
Active tool (number and name)
Cut number
Current factor of the feed potentiomenter in
percent
Active spindle load in percent
Reference load of the spindle
Current spindle speed
Current deviation of the speed
Current machining time
Line diagram, in which the current spindle load
and the value commanded by the TNC for the
feed-rate override are shown