2015 | OriginalPaper | Buchkapitel
Object-Oriented Approach to I/O Handling in Control Programs
verfasst von : Dariusz Rzońca, Jan Sadolewski, Bartosz Trybus
Erschienen in: Progress in Automation, Robotics and Measuring Techniques
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The paper shows how new object-oriented features introduced in IEC 61131-3:2013 can be used for handling inputs and outputs. The new extensions such as classes, interfaces or inheritance are first characterized. Then, an UML model of I/O handling with diagrams for peripheries, universal data type and board capabilities is given. Finally, a practical example of model implementation is shown with portions of ST code accessing three different types of I/O boards.