BS ISO 10303-201:1994 - Page 10

Industrial automation systems and integration. Product data representation and exchange. Application protocol: Explicit draughting | Status: Current

1 Scope This part of ISO 10303 specifies the use of the integrated resources necessary for the scope and information requirements for explicit draughting.

NOTE The application activity model in annex F provides a graphical representation of the processes and information flows which are the basis for the definition of the scope of this part of ISO 10303.

This part of ISO 10303 is applicable to the inter-organization exchange of computer-interpretable drawing information and product definition data. The following are within the scope of this part of ISO 10303:

• — the representation of drawings for the purpose of exchange, especially for mechanical engineering, architectural engineering, and construction applications;
• — the representation of the real size of a product depicted in a drawing to enable use by applications where true geometric equivalence is required;

  EXAMPLE 2

  The representation of the shape of the product is required to support not only visual equivalence of exchanged drawings but also where true geometric equivalence is required by the receiving system. Such uses include the calculations of distances or areas and the generation of numerical control tool paths.
• — the representation of a drawing that depicts any phase of the design;
• — the representation of individual drawing revisions;
• — the representation of the two-dimensional draughting shape model depicting the product shape and the transformations used for the generation of the drawing views;
• — the presentation of non-shape product definition data depicted in a drawing by two-dimensional annotation;
• — the hierarchical structure of drawings, drawing sheets, and views of the draughting shape model;
• — mechanisms for the grouping of the elements depicted on a drawing;
• — the administrative data used for the purpose of drawing management;
• — the administrative data identifying the product versions being documented by the drawing.

The following are outside the scope of this part of ISO 10303:

• — the representation of the shape of a product using three-dimensional geometry;
• — the representation of the shape of a product that is not depicted in a drawing;
• — the representation of drawings that are not related to a, product;
• — the exchange of drawing history;
• — the definition of annotation in three-dimensional coordinate systems;
• — the presentation of dimensions and annotation that are associated to viewed geometry and annotation;
• — a computer-interpretable bill of material structure except as conveyed by annotation on the drawing;
• — strict enforcement of draughting standards;
• — drawings containing non-displayable attribute data other than that required as adminstrative data;

  EXAMPLE 3

  Non-displayable attribute data could be density, mass, or moment of inertia.
• — the automatic generation of drawings including views, dimensions, and annotation.
• — the exchange of data used exclusively for the creation of paper or or hardcopy versions of the drawing.

  EXAMPLE 4

  Printer or plotter data could be pen designations, plot scale, or plot color specifications.