Smart DWG to PDF Converter that allows you to batch convert DWG or DXF to PDF,is easy-to-use.Supports AutoCAD 2011.Runs outside of AutoCAD as a standalone program (AutoCAD not required).
Features includes:
1.Create a single merged PDF file from several DWG files or create an individual PDF file for each DWG file selected;
2.

Both model space and paper space supported;
3.Both batch mode and command line supported;
4.Multiple choice of output paper size;
5.

Supports every version of DWG/DXF files (Supports R2.5 to 2009 formats)

Now, Layers selection is supported, let you turn on or turn off each layer, and the settings could be different to each layouts, or set specific layers been turn off to all the drawings.
The software is trying to be ease of use to the starters, and power of features to the experts.