HEIDENHAIN iTNC 530 295
9.11 Programming Examples
N190 G00 Z+250 M2 *
Retract in the tool axis, end program
N200 G98 L10 *
Subprogram 10: Machining operation
N210 G54 X+Q1 Y+Q2 *
Shift datum to center of ellipse
N220 G73 G90 H+Q8 *
Account for rotational position in the plane
N230 Q35 = ( Q6 - Q5)/Q7*
Calculate angle increment
N240 Q36 = +Q5 *
Copy starting angle
N250 Q37 = +0 +0 *
Set counter
N260 Q21 = Q3 * COS Q36 *
Calculate X coordinate for starting point
N270 Q22 = Q4 * SIN Q36 *
Calculate Y coordinate for starting point
N280 G00 G40 X+Q21 Y+Q22 M3 *
Move to starting point in the plane
N290 Z+Q12 *
Pre-position in spindle axis to set-up clearance
N300 G01 Z-Q9 FQ10 *
Move to working depth
N310 G98 L1 *
N320 Q36 = Q36 + Q35 *
Update the angle
N330 Q37 = Q37 + 1 *
Update the counter
N340 Q21 = Q3 * COS Q36 *
Calculate the current X coordinate
N350 Q22 = Q4 * SIN Q36 *
Calculate the current Y coordinate
N360 G01 X+Q21 Y+Q22 FQ11 *
Move to next point
N370 D12 P01 +Q37 P02 +Q7 P03 1 *
Unfinished? If not finished return to label 1
N380 G73 G90 H+0 *
Reset the rotation
N390 G54 X+0 Y+0 *
Reset the datum shift
N400 G00 G40 Z+Q12 *
Move to set-up clearance
N410 G98 L0 *
End of subprogram
N99999999 %ELLIPSE G71 *
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