ISO10303 is a standard for exchange of product information. The standard is organized into a set of Application Protocols (AP). There are two APs that are supported in this release these being ISO10303-203 (Configuration Controlled Design) conformance classes 1-4, and ISO10303-214 (Core Data for Automotive Mechanical Design Process) conformance classes 1-2. The import and export of this data is supported via ISO10303-21 Physical file exchange.
Choose either AP214 or AP203 to output the desired STEP file. The default is AP214.
Wireframe models – A collection of curves written out as a Wireframe model.
Surface models – A collection of surfaces written out as a surface model.
Manifold Shells – A collection of stitched surfaces that do not describe a volume is saved out as a G3 Manifold Shell.
Brep Solids – Stitched geometry that describes a closed volume is written out as a G5 Brep Solid.
Hybrid models – A combination of wireframe, surface, manifold shells and BREP solids.
The user can save the model and all the geometry in an Alias Stage, into a STEP product. This is performed by choosing the Hybrid Models option (the default).
If, because of contractual or system limitations on the receiving side, a Hybrid model cannot be used, you can select single model representations, as explained in the following table.
| Any Alias Geometry | Hybrid Models |
| Alias Shells (Closed) | G5 BREP Solids |
| Alias Shells (Closed/Open) | G3 Manifold Shells |
| Alias Surface | G2 Surface Models |
| Alias Curves | G2 Wireframe Models |
There is an inherent loss of information outputting an Alias Shell as a wireframe.
When you do not have any shells, you can not get anything from manifold shells option. You can get the unstitched surfaces transferred by using hybrid option.
The other options are selective to shells (only), surfaces (only) or wires (only).
If the Alias model is a set of trimmed surfaces; the model cannot be output as a BREP Solid.
When you choose Model Type option > Manifold Shells or Hybrid Models, two Surface Geometry options are made available.
As Is only outputs existing shells
Add Topology converts all surfaces into shells and outputs the shells.
Valid when outputting Hybrid Models and G2 Surface Models, this option allows you to output either 2D (parameter space) or 3D (model space) trimming curves.
The default is Parameter Space Trimming.
A multi-knot consists of multiple edit points at the same location in space. Multi-knots are usually the result of curve or surface editing operations that require a sharp turn in a curve. Note: many CAD packages will not accept models with multi-knots. Default is ON
Allows you to attach configuration data to your STEP file.
