HEIDENHAIN TNC 640 (34059x-02) ISO programming - Manual (Page 529)

Program run 17.5
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TNC 640 | User's Manual for DIN/ISO Programming | 5/2013
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Returning to the contour
With the RESTORE POSITION function, the TNC returns to the
workpiece contour in the following situations:
Return to the contour after the machine axes were moved
during a program interruption that was not performed with the
INTERNAL STOP function
Return to the contour after a block scan with RESTORE POS AT
N, for example after an interruption with INTERNAL STOP
Depending on the machine, if the position of an axis has
changed after the control loop has been opened during a
program interruption
To select a return to contour, press the RESTORE POSITION
soft key
Restore machine status, if required
To move the axes in the sequence that the TNC suggests on the
screen, press the machine START button, or
To move the axes in any sequence, press the soft keys
RESTORE X, RESTORE Z, etc., and activate each axis with the
machine START button
To resume machining, press the machine START button