HEIDENHAIN ITNC 530 User Manual page 222

Example: Circular movements with Cartesian coordinates
0 BEGIN PGM CIRCULAR MM
1 BLK FORM 0.1 Z X+0 Y+0 Z-20
2 BLK FORM 0.2 X+100 Y+100 Z+0
3 TOOL DEF 1 L+0 R+10
4 TOOL CALL 1 Z X4000
5 L Z+250 R0 FMAX
6 L X-10 Y-10 R0 FMAX
7 L Z-5 R0 F1000 M3
8 APPR LCT X+5 Y+5 R5 RL F300
9 L X+5 Y+85
10 RND R10 F150
11 L X+30 Y+85
12 CR X+70 Y+95 R+30 DR-
13 L X+95
14 L X+95 Y+40
15 CT X+40 Y+5
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Define blank form for graphic workpiece simulation
Define tool in the program
Call tool in the spindle axis and with the spindle speed S
Retract tool in the spindle axis at rapid traverse FMAX
Pre-position the tool
Move to working depth at feed rate F = 1000 mm/min
Approach the contour at point 1 on a circular arc with
tangential connection
Point 2: first straight line for corner 2
Insert radius with R = 10 mm, feed rate: 150 mm/min
Move to point 3: Starting point of the arc with CR
Move to point 4: End point of the arc with CR, radius 30 mm
Move to point 5
Move to point 6
Move to point 7: End point of the arc, radius with tangential
connection to point 6, TNC automatically calculates the radius
6 Programming: Programming Contours