HEIDENHAIN iTNC 530 User Manual page 315

N190 G00 Z+250 M2 *
N200 G98 L10 *
N210 G54 X+Q1 Y+Q2 *
N220 G73 G90 H+Q8 *
N230 Q35 = ( Q6 - Q5 ) / Q7 *
N240 Q36 = +Q5 *
N250 Q37 = +0 +0 *
N260 Q21 = Q3 * COS Q36 *
N270 Q22 = Q4 * SIN Q36 *
N280 G00 G40 X+Q21 Y+Q22 M3 *
N290 Z+Q12 *
N300 G01 Z-Q9 FQ10 *
N310 G98 L1 *
N320 Q36 = Q36 + Q35 *
N330 Q37 = Q37 + 1 *
N340 Q21 = Q3 * COS Q36 *
N350 Q22 = Q4 * SIN Q36 *
N360 G01 X+Q21 Y+Q22 FQ11 *
N370 D12 P01 +Q37 P02 +Q7 P03 1 *
N380 G73 G90 H+0 *
N390 G54 X+0 Y+0 *
N400 G00 G40 Z+Q12 *
N410 G98 L0 *
N99999999 %ELLIPSE G71 *
HEIDENHAIN iTNC 530
Retract in the tool axis, end program
Subprogram 10: Machining operation
Shift datum to center of ellipse
Account for rotational position in the plane
Calculate angle increment
Copy starting angle
Set counter
Calculate X coordinate for starting point
Calculate Y coordinate for starting point
Move to starting point in the plane
Pre-position in spindle axis to set-up clearance
Move to working depth
Update the angle
Update the counter
Calculate the current X coordinate
Calculate the current Y coordinate
Move to next point
Unfinished? If not finished return to label 1
Reset the rotation
Reset the datum shift
Move to set-up clearance
End of subprogram
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