
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 those two standards is also achieved by using the SQWRL. A small airport baggage handling system implemented in the IEC 61131–3 PLC is converted to the IEC 61499 function block as a demonstration.
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