HEIDENHAIN TNC 640 (34059x-02) ISO programming - Manual (Page 308)

Programming: Q Parameters
9.12 Programming examples
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TNC 640 | User's Manual for DIN/ISO Programming | 5/2013
N280 Z+Q12 * Pre-position in spindle axis to set-up clearance
N290 G01 Z-Q9 FQ10 * Move to working depth
N300 G98 L1 *
N310 Q36 = Q36 + Q35 *
Update the angle
N320 Q37 = Q37 + 1 * Update the counter
N330 Q21 = Q3 * COS Q36 * Calculate the current X coordinate
N340 Q22 = Q4 * SIN Q36 * Calculate the current Y coordinate
N350 G01 X+Q21 Y+Q22 FQ11 * Move to next point
N360 D12 P01 +Q37 P02 +Q7 P03 1 * Unfinished? If not finished, return to LBL 1
N370 G73 G90 H+0 * Reset the rotation
N380 G54 X+0 Y+0 * Reset the datum shift
N390 G00 G40 Z+Q12 * Move to set-up clearance
N400 G98 L0 * End of subprogram
N99999999 %ELLIPSE G71 *