HEIDENHAIN iTNC 530 (340 422) ISO programming - Manual (Page 468)

468 11 Test Run and Program Run
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n Returning to the contour
With the RESTORE POSITION function, the TNC returns to the
workpiece contour in the following situations:
n Return to the contour after the machine axes were moved during a
program interruption that was not performed with the INTERNAL
STOP function.
n Return to the contour after a block scan with RESTORE POS AT N,
for example after an interruption with INTERNAL STOP.
n
Depending on the machine, if the position of an axis has changed
after the control loop has been opened during a program
interruption.
U U U U To select a return to contour, press the RESTORE POSITION soft
key.
U U U U To move the axes in the sequence that the TNC suggests on the
screen, press the machine START button.
U U U U To move the axes in any sequence, press the soft keys RESTORE
X, RESTORE Z, etc., and activate each axis with the machine START
key.
U U U U To resume machining, press the machine START key.