HEIDENHAIN iTNC 530 (34049x-08) ISO programming - Manual (Page 238)

238 Programming: Data transfer from DXF files or plain-language contours
7.
1 Pr
ocessing DXF files (sof
tw
ar
e
option)
7.1 Processing DXF files
(software option)
Function
DXF files created in a CAD system can be opened directly by the TNC,
in order to extract contours or machining positions, and save them as
conversational programs or as point files. Plain-language programs
acquired in this manner can also be run by older TNC controls, since
these contour programs contain only L and CC/C blocks.
If you process DXF files in the Programming and Editing operating
mode, the TNC generates contour programs with the file extension .H
and point files with the extension .PNT. If you process DXF files in the
smarT.NC operating mode, the TNC generates contour programs with
the file extension .HC and point files with the extension .HP.
The DXF files to be processed must be stored on the hard
disk of your TNC.
Before loading the file to the TNC, ensure that the name
of the DXF file does not contain any blank spaces or illegal
special characters.(see "File names" on page 119)
The DXF file to be opened must contain at least one layer.
The TNC supports the most common DXF format, R12
(equivalent to AC1009).
The TNC does not support binary DXF format. When
generating the DXF file from a CAD or drawing program,
make sure that you save the file in ASCII format.
The following DXF elements can be selected as contours:
 LINE (straight line)
 CIRCLE (complete circle)
 ARC (circular arc)
 POLYLINE