HEIDENHAIN iTNC 530 (340 49x-05) Pilot - Manual (Page 185)

185
Processing DXF File
s (Software
Option)
Specifying the reference point
The datum of the drawing for the DXF file is not always located in a
manner that lets you use it directly as a reference point for the workpiece.
Therefore, the TNC has a function with which you can shift the drawing
datum to a suitable location by clicking an element.
You can define a reference point at the following locations:
„ At the beginning, end or center of a straight line
„ At the beginning or end of a circular arc
„ At the transition between quadrants or at the center of a complete
circle
„ At the intersection of a
„ straight line and a straight line, even if the intersection is actually on
the extension of one of the lines
„ line and circular arc
„ straight line and complete circle
„ complete circle/arc and a complete circle/arc
You must use the touchpad on the TNC keyboard or a mouse
attached via the USB port in order to specify a reference
point.
You can also change the reference point once you have
already selected the contour. The TNC does not calculate the
actual contour data until you save the selected contour in a
contour program.