HEIDENHAIN TNC 640, User Manual, Page: 309 / 948

Programming Contours | Path contours
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Cartesian coordinates
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
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Example: Full circle with Cartesian coordinates
0 BEGIN PGM C-CC MM
1 BLK FORM 0.1 Z X+0 Y+0 Z-20
Definition of workpiece blank
2 BLK FORM 0.2 X+100 Y+100 Z+0
3 TOOL CALL 1 Z S3150
Tool call
4 CC X+50 Y+50
Define the circle center
5 L Z+250 R0 FMAX
Retract the tool
6 L X-40 Y+50 R0 FMAX
Pre-position the tool
7 L Z-5 R0 F1000 M3
Move to working depth
8 APPR LCT X+0 Y+50 R5 RL F300
Approach the starting point of the circle on a circular arc with
tangential connection
9 C X+0 DR-
Move to the circle end point (= circle starting point)
10 DEP LCT X-40 Y+50 R5 F1000
Depart the contour on a circular arc with tangential
connection
11 L Z+250 R0 FMAX M2
Retract the tool, end program
12 END PGM C-CC MM