HEIDENHAIN TNC 640, User Manual, Page: 345 / 948

Data Transfer from CAD Files | CAD import (option 42)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
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Selecting and saving a contour
Operating notes:
Demo mode is active if option 42 is not enabled.
You can select a maximum of 10 elements in demo
mode.
Specify the direction of rotation during contour
selection so that it matches the desired machining
direction.
Select the first contour element such that approach
without collision is possible.
If the contour elements are very close to one
another, use the zoom function.
The following elements are selectable as contours:
Line segment
Circle
Circular arc
Polyline
On curved elements, such as splines or ellipses, you can select the
end points and center points. They can also be selected as part of
contours and converted to polylines during export.
Element information
In the Element Information window the control displays a range of
information about the last contour element you selected in the List
View window or in the Graphics window.
Layer
: Indicates the layer you are currently on
Type
: Indicates the current element type, e.g. line
Coordinates
: Shows the starting point and end point of an
element, and circle center and radius where appropriate