HEIDENHAIN TNC 320, User Manual

Page: 234 / 581

Programming: Data transfer from DXF files or plain-language contours
7.1 Processing DXF Files (Software Option)
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TNC 320 | User's Manual
HEIDENHAIN Conversational Programming | 3/2014
7.1 Processing DXF Files (Software
Option)
Application
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 operating mode,
the TNC generates contour programs with the file extension
.H
and point files with the extension .PNT by default. 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 by default. However, you can choose the
desired file type in the saving dialog. Furthermore, you can also
save the selected contour or the selected machining positions to
the clipboard of the TNC and then insert them directly in an NC
program.
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 impermissible special characters see "File
names", page 100.
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