For the CATIA PlugIn, .NET Framework 2.0 is required.
SetupCatiaR20.exe
Setup for CATIA V5 R18/R19/R20 (German/English)
SetupCatia.exe
Setup for CATIA V5 R16/R17 (German/English)
BenutzungCatia_e.pdf
User manual for the CATIA plugin (English) - PDF