HEIDENHAIN SW 548328-05 DIN Programming - Manual (Page 265)

HEIDENHAIN MANUALplus 620, CNC PILOT 620/640
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4.1
7
Cont
our
-based t
u
rn
ing cy
cles
Parameters
V Identifier start/end (default: 0) A chamfer/rounding arc is
machined:
 0: At beginning and end
 1: At beginning
 2: At end
 3: No machining
 4: Chamfer/rounding arc is machined—not the basic
element (prerequisite: Contour section with one element)
D Omit elements (see figure)
O Hide undercutting:
 0: Undercuts are machined
 1: Undercuts are not machined
B Slide lead with 4-axis machining (not yet implemented)
XA, ZA Starting point of blank (only effective if no blank was
programmed):
 XA, ZA not programmed: The workpiece blank contour is
calculated from the tool position and the ICP contour.
 XA, ZA programmed: Definition of the corner point of the
workpiece blank.