ISO 10303-1-2021 pdf free download – Industrial automation systems and integration — Product data representation and exchange — Part 1: Overview and fundamental principles.
4 overview of Iso 103034.1 Purpose
The purpose of lSO 10303 is to specify a form for the unambiguous representation and exchange ofcomputer-interpretable product data throughout the life of a product. This form is independentof any specific computer system. This form enables consistent implementations across multipleapplications and systems. IS0 10303 permits different implementation methods to be used for storing,accessing, transferring, and archiving product data. ISO 10303 defines a rigorous process for testingimplementations for conformance.
4.2Scope of lso 10303
ISO 10303 provides a representation of product information along with the necessary mechanismsand definitions to enable product data to be exchanged. The exchange is among different computersystems and environments associated with the complete product lifecycle, including product design,manufacture, use, maintenance, and final disposition.
The following are within the scope of lIS0 10303:
– representation of product information, including components and assemblies;
implementations methods for exchange of product data, including storing, transferring, accessing,and archiving.
4.3Fundamental principles4.3.1 General
ISO 10303 separates the techniques of representation of product information from the implementationmethods used for data exchange.
The representation techniques provide a single representation of product information common to manyapplications. This common representation may be adapted to meet the needs of specific applications.An application protocol (AP) specifies the representation of product information for one or moreapplications.
ISO 10303 specifies the implementation methods that support the exchange of product data defined inAPs.
ISO 10303 defines a formal data specification language，EXPRESS which is used to specify therepresentation of product information. The use of a formal language provides unambiguous andconsistent representation and facilitates development of implementations. The representation ofproduct information may be annotated with a literal definition for each construct.
ISo 10303 provides a methodology and framework for conformance testing of implementations.
4.3.2Integrated resources
A set of integrated resources (IRs) shall provide the specification of a representation of productinformation. Each IR comprises a set of descriptions, written in a formal data specification language,applicable to product data known as resource constructs.One set may be dependent on other sets forits definition. A single resource construct may represent similar information for different applications.The IRs in ISO 10303 are divided into two groups: generic resources and application resources. Thegeneric resources are independent of applications and may reference other resources.The applicationresources may reference other resources and may add other resource constructs for use by a groupof similar applications. The lRs may reference product data descriptions written using EXPRESs fromother International Standards.
4.3.3Support for applications
The lRs define a generic information model for product information. They are not sufficient to supportthe information requirements of an application without the addition of application specific constraints,relationships, and attributes.
ISO 10303 defines APs in which the IRs are interpreted to meet the product information requirementsof specific applications. The interpretation is achieved by selecting appropriate resource constructsand refining their meaning, by specifying any appropriate constraints,relationships, and attributes.This interpretation results in an application interpreted model (AIM). The AIM is documented as partof an AP.
ISO 10303 has two mechanisms to ensure consistent interpretation when a resource constructrepresents the same information requirement in different APs. One mechanism uses interpretedresource constructs appearing in more than one AP as a documented application interpretedconstruct(AIC).The other mechanism uses application modules(AMs) that document the harmonizedrequirements along with the interpreted resource constructs.
NOTE Subclauses 6.4 and 6.5 discuss application interpreted constructs and application modules inmore detail.
The scope and information requirements of the application are specified using the terminology of theapplication domain.The AP provides a mapping to show how the interpretation of the lRs is used tomeet the information requirements of the application domain.ISO 10303-1 pdf download.