HEIDENHAIN SW 54843x-03 DIN Programming - Manual (Page 395)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 395
4.29 Other G codes
Traversing to a fixed stop
When traversing to a fixed stop, the control moves
 up to the fixed stop and stops as soon as the following error has
been reached. The remaining path of traverse is deleted
 back to starting position
 back by the return traverse path
Programming "traverse to a fixed stop":
 Position the slide at a sufficient distance before the fixed stop.
 Use a moderate feed rate (< 1000 mm/min)
Example of traversing to a fixed stop:
. . .
N.. G0 Z20 Pre-position slide 2
N.. G916 H100 D6 K-20 V0 O1 Activate monitoring, traverse to a fixed stop
. . .