PDM-UG: External File Reference

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This page belongs to the PDM Usage Guide.

External files may also be associated with product data in a way that is consistent but simpler than that used for documents. While the requirement to assign documents to various product data is basically supported by three additional entities: document_product_equivalence, document, and applied_document_reference, external files need only the applied_document_reference entity to be related as a reference to other product data.

The Instance Model: EXPRESS entities and attributes

The EXPRESS entities and attributes used to support the requirements of external file association to product data are illustrated in Diagram 43.

Diagram 43 External File Association to Product Data Instance Diagram.png
Diagram 43: External File Association to Product Data Instance Diagram

The Instance Model: STEP exchange file format (ISO10303 Part 21 syntax)

#70=PRODUCT('MP-03-2','my part',$,(#60));
#80=PRODUCT_DEFINITION_FORMATION('03','3rd modification',#70);
#90=PRODUCT_DEFINITION('/NULL',$,#80,#50);
...
#120=DOCUMENT_TYPE('geometry');
#130=DOCUMENT_FILE('measure file id','measure data',$,#120,'',$);
#140=APPLIED_DOCUMENT_REFERENCE(#130,'',(#90));
#150=OBJECT_ROLE('informative',$);
#160=ROLE_ASSOCIATION(#150,#140);
#170=DOCUMENT_REPRESENTATION_TYPE('digital',#130);
Example 45: exchange file segment for external file association to product data
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