• Never modify data generated in V5: information could be lost and the MULTICAD Update could result in incorrect results.
  • Part Number must be unique, all parts with the same name are considered as identical.
  • On Windows, make sure the files to translate are not encrypted: push the Advanced button in the Properties dialog box of the file and uncheck the Encrypt contents to secure data option.
  • UG compressed files are not supported. Please save the files as uncompressed in UG to read them in V5.

Direct mode

The MultiCAx UD Plug-in is supported on Windows 32 bits and 64 bits.

The MULTICAx Unigraphics (UD) Plug-in allows you to import:

  • Unigraphics native data (*.prt) (part and assembly models). This import converts  Unigraphics part geometry into the CATIA Graphical Representation (CGR) or CATPart formats, which renders it readable by V5.  The MULTICAx (UD) Plug-in imports Unigraphics assembly files into a V5 product structure document. You can perform this import interactively or from the command line.
  • Parasolid

The assembly import converts the Unigraphics assembly hierarchy into product structure, along with the proper positions. No attributes of the assembly other than hierarchy, positions, and colors of the geometry are addressed in assembly import.

Protocols and attributes

For conversions, the following protocols or attributes apply:

  • Length units for both parts and assemblies are converted to millimeters. 
  • Assembly-level colors and other features are not supported. 
  • Pure wire frame data is not supported during the conversion.
  • Text and annotations are not supported.

Installation requirements

MSXML 4 must be installed on your machine before running the converter.


Licensing requirements

*.prt, *.x_t and *.x_b extensions are not natively supported in CATIA, DELMIA and ENOVIA therefore the following products are required to access these extensions: UDL licenses (CATIA, ENOVIA), UDP (DELMIA).


For Windows:

CAD Format Part Assembly Drafting Support Foreign CAD
license required
File extension V5 License
UG V15 up to UG NX3 OK OK KO No .prt


up to V16
VDA-FS OK N/A N/A No .vda (**)
  (**) VDA-FS data is read with any of the following MultiCAx plug-in products installed (no licenses required): PDL, DAL, DEL, DSL, UDL.