HEIDENHAIN iTNC 530 (60642x-04) ISO programming - Manual (Page 104)

104 Programming: Fundamentals, File Management
3.2
Cr
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Example: Display the BLK form in the NC program
The TNC automatically generates the first and last blocks of the
program.
%NEW G71 * Program begin, name, unit of measure
N10 G30 G17 X+0 Y+0 Z-40 * Spindle axis, MIN point coordinates
N20 G31 X+100 Y+100 Z+0 * MAX point coordinates
N99999999 %NEW G71 * Program end, name, unit of measure
If you do not wish to define a blank form, cancel the dialog
at Working spindle axis X/Y/Z by pressing the DEL key!
The TNC can display the graphics only if the shortest side
is at least 50 µm long and the longest side is no longer
than 99 999.999 mm.