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Нормативно-справочная база CALS. Международная нормативная база. The current and future business environment is characterised, страница 2

Open PDM recognises that partnerships will lead to data exchange and sharing across multiple PDM systems.

So what is needed to support a future Open PDM approach? The following requirements have been identified for PDM vendors, for CAD vendors and for standards development.

5.1  Requirements for PDM vendors

1.   

PDM vendors to adopt a common format for describing the information structures inherent in their systems. This description has to be available to all interested parties. The format shall be compatible with system configuration tools.

1.   

PDM vendors to adopt a common configuration approach, based on a language such as EXPRESS, to allow equivalent facilities to be developed in different PDM systems across a partnership.

1.   

PDM vendors to provide access to (a library of) standard components for use in configuring systems. Such components shall include the PDM relevant entities from STEP, enabling use of STEP for exchange.

1.   

PDM vendors to provide a common API using the Standard Data Access Interface (SDAI - ISO 10303-22).

1.   

PDM vendors to provide support for the process of mapping from their system into other formats. This mapping capability is necessary to enable cost-effective interfacing:

·  between system versions

·  between different configurations of the same system

·  to legacy systems

·  to external information formats (such as STEP Application Protocols).

Three other general concerns have been recognised:

·  Scalability. There are concerns over how well current PDM approaches scale to large projects with many users. The adoption of an open approach should facilitate the partitioning of PDM within large projects.

·  Internal solution viewpoint. Currently PDM is focused on providing a solution to the data management problems within companies. The PDM industry must develop a greater understanding of the consequences of business drive towards partnership and outsourcing if it is to meet the needs of its customers.

·  Certification There will be a need to have conformance testing of PDM implementations to ensure the consistency necessary for Open PDM to work.

5.2  Requirements for CAD and other functional system vendors

A standardised interface is needed between CAD and PDM systems. Currently there is no specification of the information that a CAD system shall maintain or support about a design to support PDM. This applies equally to other  functional systems such as analysis, etc.

To enable Open PDM, there has to be widespread support for a consistent CAD-PDM interface. This interface shall be based on and support standard data items in line with STEP.

5.3  Requirements for standards

Standards be developed to define the data necessary for the areas . However, just as important is the need for the continuing development of existing standards, particularly STEP, to take into account the requirements for Open PDM.

6.  Conclusions

The current business environment increasingly requires communication between PDM systems. Yet there are currently many barriers to effective exchange. To overcome these barriers requires a standards-based approach.

There are four different interfaces of importance to PDM:

To support Open PDM, the interfaces to the developer, to the functional systems and to other PDM systems should all have characteristics common to all PDM systems, based on use of standards. This is not the case at present.

This white paper presents a basic set of requirements. A more detailed set of requirements should be developed for each of the interfaces.

7.  Action

1.  This paper may be copied freely. It is available from

2.  Discuss this paper with your partner companies.

3.  Discuss this paper with your PDM vendor.

4.  Provide feedback to

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