HEIDENHAIN SW 54843x-02 DIN Programming - Manual (Page 266)

266 DIN programming
4.1
7
Cont
our
-based t
u
rn
ing cy
cles
The control uses the tool definition to distinguish between external
and internal machining.
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.
 The tool radius compensation is active.
 A G57 oversize enlarges the contour (also inside
contours).
 A G58 oversize
 >0: Enlarges the contour
 <0: Is not offset
 G57/G58 oversizes are deleted after cycle end.