An integrated approach for an interoperable industrial networking architecture consisting of heterogeneous fieldbuses

Authors:
L. Hadellis;S. Koubias;Vassilios Makios
Affiliations:
Applied Electronics Laboratory, Electrical and Computer Engineering Department, University of Patras, Patras 26500, Greece;Applied Electronics Laboratory, Electrical and Computer Engineering Department, University of Patras, Patras 26500, Greece;Electromagnetics Laboratory, Electrical and Computer Engineering Department, University of Patras, Patras 26500, Greece
Venue:
Computers in Industry
Year:
2002

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Abstract

An integrated approach for an interoperable networking architecture is proposed and implemented within a distributed heterogeneous industrial enterprise environment consisting of two fieldbus segments, a LonWorks and a Profibus, interoperating through an Interoperability Unit (IU) developed and built On a Windows 2000 platform. The proposed approach introduces an interoperability layer above the OSI stack extending the ISA/SP50 User Layer philosophy that contains a model of common objects and messages for automation applications and is called interoperable domain. The real automation distributed application is mapped to a Virtual Application (VA) that is introduced within the interoperable domain and links the distributed parts. Messaging mechanism is based on supplier common object method requests by client common objects along a relationship within the virtual application. A data-oriented format is employed for messages avoiding explicit event transfer. Finally a framework for the standardization of automation functions and services is proposed.