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Improvement of flexibility and interoperability is a usual concern of industrial automation systems developers. Service-oriented architecture is one approach promising improvement of flexibility and interoperability in existing distributed automation systems. However, the intelligent self-managing features cannot be fully achieved by just applying the service-oriented architecture. In order to improve...
Web services are widely used for enterprise software development. Web service protocols simplify application integration thanks to interface description that can be processed at runtime and, in addition, due to mature and widely used standards for transportation and internetworking. Implementation of service-oriented architecture starts to get acceptance in the field of industrial automation ranging...
This paper proposes a new methodology of migration from IEC 61131-3 PLCs to IEC 61499 function blocks. The aim of this migration process is to recreate IEC 61131-3 applications in IEC 61499 implementations with equivalent execution behavior. The formal model of the IEC 61131-3 standard for migration and cyclical execution model is defined. This method also creates a foundation for correct-by-design...
A new methodology of transformation from IEC 61131–3 PLCs to IEC 61499 function blocks is proposed in this paper. The aim of this process is to recreate IEC 61131–3 programs in the IEC 61499 format automatically. The original PLC cyclical execution is fulfilled in the IEC 61499 function blocks. Definitions of IEC 61131–3 and IEC 61499 ontology model are provided. Also the ontology mapping between...
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