Etecad
DWG DXF Convert is a batch DWG/DXF bi-directional converter as
well as a version file converter.
It converts DWG to DXF, DXF to
DWG, DWG to DWG and DXF to DXF without the need of AutoCAD.
Command
line option supports.
Etecad DWG DXF Convert allows you to choose the AutoCAD version of the output DWG/DXF file. The versions supported by DWG DXF Convert are:
AutoCAD
Release 10
AutoCAD Release 11
AutoCAD Release 12
AutoCAD
Release 14
AutoCAD 2000/2000i/2002
AutoCAD 2004/2005/2006
Easy to use interface allows to make conversion in 3 simple steps.
Step 1:

Step 2:

Step 3.

Etecad DWG DXF Convert command line allows you to convert dwg to dxf or dxf to dwg or file version conversion in silent mode without interface.
Command line using:
<application path>ECadConvert.exe "<input file>" "<output file>" <version>.
The version could be one of 10, 11, 12, 14, 2000 and 2004.
Samples:
convert a dwg file to a dxf R12
c:\efm\ECadConvert.exe "c:\projects\t1.dwg" "c:\projects\t1.dxf" 12
convert a dxf file to a dwg R2002
c:\efm\ECadConvert.exe "c:\projects\t1.dxf" "c:\My documents\t1.dwg" 2000
Support
If you have any problems about the converter, feel free contact us: info@etecad.com, or visit our web site for more information: http://www.etecad.com
You can buy Etecad DWG DXF Convert from: http://www.etecad.com/purchase.html.