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In this paper we discuss the problem of migration from the PLC control to the event-driven and component based architecture of IEC 61499 function blocks. We are using a conveyor system to illustrate three different migration methods: object-oriented in basic function block, object-oriented in composite function block and class-oriented in basic function block. The advantages and limitations are summarized...
This paper describes an implementation of a new IEC 61499 execution environment based on the generic cyclic execution model, outlined within the draft IEC 61499 Compliance Profile for Execution models. The proposed model further adds more details to the generic cyclic model via an abstract implementation independent way.
The IEC 61499 architecture is a new standard proposed to replace current PLC technologies. This paper aims to develop a guide to migrate from IEC 61131 PLC technologies to IEC 61499 function blocks, especially for PLC programmers. Multiple PLC platforms are chosen as examples and transformed function block system is provided. Beyond migration rules, current limitation and cautions during migration...
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