HEIDENHAIN TNC 640 (34059x-02) Cycle programming - Manual (Page 218)

Fixed Cycles: Contour Pocket with Contour Formula
9.1 SL cycles with complex contour formula
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TNC 640 | User's Manual Cycle Programming | 5/2013
Selecting a program with contour definitions
With the
SEL CONTOUR function you select a program with contour
definitions, from which the TNC takes the contour descriptions:
Show the soft-key row with special functions
Select the menu for functions for contour and
point machining
Press the SEL CONTOUR soft key.
Enter the full name of the program with the
contour definition and confirm with the END key.
Program a
SEL CONTOUR block before the SL
cycles. Cycle
14 CONTOUR GEOMETRY is no longer
necessary if you use SEL CONTOUR.
Defining contour descriptions
With the
DECLARE CONTOUR function you enter in a program
the path for programs from which the TNC draws the contour
descriptions. In addition, you can select a separate depth for this
contour description (FCL 2 function):
Show the soft-key row with special functions
Select the menu for functions for contour and
point machining
Press the DECLARE CONTOUR soft key.
Enter the number for the contour designator QC,
and confirm with the ENT key.
Enter the full name of the program with the
contour description and confirm with the END key,
or if desired,
Define a separate depth for the selected contour.
With the entered contour designators
QC you can
include the various contours in the contour formula.
If you program separate depths for contours, then
you must assign a depth to all subcontours (assign
the depth 0 if necessary).