System and methodology that facilitates client and server interaction in a distributed industrial automation environment

US7308473B1 · kind B1 · utility

Assignee

• Rockwell Automation Technologies, Inc. · US

Inventors

• David E. Thomas · Northbridge, US
• Taryl J. Jasper · South Euclid, US
• Clifton Harold Bromley · New Westminster, CA
• Neville J. Parakh · Delta, CA

Key dates

• Filing date: Jul 29, 2002
• Grant date: Dec 11, 2007
• Expiry date: Jul 12, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P90/02
• WIPO field: Control
• WIPO sector: Instruments

Abstract

The present invention relates to a system and methodology providing a virtual “namespace” architecture between client and server components in an industrial automation environment, wherein the namespace can be a structured store of logical names, instances and definitions, together with access and modification components. An Active Directory Service Interface (ADSI) family can be employed, for example, to navigate and access the namespace structure and contents. The present invention employs the concept of a “service” to encapsulate server-side behavior accessed through the namespace. Thus, logical names can be utilized to decouple client components from the physical location and implementation of server components. Some services, known as “basic services”, may ignore the logical container structure exposed by an area model in a namespace. By contrast, services which utilize an area context and a set of named service items to interact with clients can be referred to as “namespace extensions.” Further, services known as “context services” may use the area model to scope and control accesses, yet not employ a service item namespace organized by the area model.