HEIDENHAIN iTNC 530 (60642x-03) ISO programming - Manual (Page 257)

HEIDENHAIN iTNC 530 257
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Defining a reference point; selecting and saving
contours
Setting the reference point and selecting the contours is identical to
data transfer from the DXF file:
 See "Specifying the reference point" on page 244
 See "Selecting and saving a contour" on page 246
In addition, a special function is available to quickly select contours:
The TNC displays contour names in the layer mode if the program
contains appropriately formatted structure items.
Double-click a layer to have the TNC automatically select the complete
contour up to the next structure item. Use the Save function to save
the selected contour directly as an NC program.
Example NC blocks
6 ... Any desired lead program
7 L Z... Pre-positioning
8 * – Inside contour Structure block that the TNC displays as a layer
9 L X+20 Y+20 RR F100 First contour point
10 L X+35 Y+35 End point of the first contour element
11 L ... Further contour elements
12 L ...
2746 L ... Last contour point
2747 * – Contour end Structure block identifying the contour end
2748 L ... Intermediate positioning movements