The DIALux Link helps you exchange data between Revit MEP and DIALux. In order to do that you will have to create spaces for the rooms you want to import to DIALux.
When the spaces are created, click on the function Export to STF File. Select the spaces to be exported and confirm by clicking Export.
Select where to save the file. A dialog box will appear that confirms the spaces have been successfully exported.
Open DIALux and import the stf-file. Place your lighting fixtures and when finished export to STF-file.
Import the STF-file from DIALux by clicking Import from STF file. Select which of the spaces to import in the project.
Revit will now create and insert the lighting fixtures in the project and a dialog box will appear that confirms that.
If anything goes wrong with the import/export you can see this in the error log.