HEIDENHAIN SW 548328-05 DIN Programming - Manual (Page 215)

HEIDENHAIN MANUALplus 620, CNC PILOT 620/640
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Separation point G44
During automatic program creation with TURN PLUS, you can define
the separation point for rechucking with function G44.
Oversize G52-Geo
G52 defines an equidistant oversize that applies to basic contour
elements and form elements and is taken into consideration in G810,
G820, G830, G860 and G890.
Parameter
D Location of separation point:
 0: Start of the basic element as separation point
 1: Target of the basic element as separation point
If no separation point was defined, TURNplus uses the
largest diameter as separation point for outside machining
and the smallest diameter as separation point for inside
machining.
Parameters
P Oversize (radius)
H P applies as an absolute or additive value (default: 0)
 0: P replaces G57/G58 oversizes
 1: P is added to G57/G58 oversizes
 G52 is a modal function.
 Program G52 in the NC block for which it is intended.
 G50 preceding a cycle (MACHINING section) cancels an
oversize programmed for that cycle with G52.