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https://hdl.handle.net/10216/105445| Author(s): | Vitor Emanuel Esteves Lopes |
| Title: | Converting LD to SFC (IEC 61131-3) |
| Issue Date: | 2017-07-13 |
| Abstract: | Ladder Diagram is a simple graphic language useful to express control in terms of a set of boolean predicates that relate input boolean data to output actuation. Although widely used, LD is not properly designed to express sequential logic. To express sequential logic in a clear and structured way we can use SFC. SFC is a graphical language designed to break sequential control into small tasks and can be easily understood upon quick analysis. Since many industrial processes are sequential by nature and there are still many LD programs in the industry, a tool to extract sequential logic from LD programs and represent it in SFC is needed. From this premise, a software tool is developed in Java programming language. This tool takes a project in PLCopen XML format, extracts the LD program and creates the smaller state-space that represents the obfuscated sequential logic. From this state-space a SFC can be built. |
| Description: | Ladder Diagram is a simple graphic language useful to express control in terms of a set of boolean predicates that relate input boolean data to output actuation. Although widely used, LD is not properly designed to express sequential logic. To express sequential logic in a clear and structured way we can use SFC. SFC is a graphical language designed to break sequential control into small tasks and can be easily understood upon quick analysis. Since many industrial processes are sequential by nature and there are still many LD programs in the industry, a tool to extract sequential logic from LD programs and represent it in SFC is needed. From this premise, a software tool is developed in Java programming language. This tool takes a project in PLCopen XML format, extracts the LD program and creates the smaller state-space that represents the obfuscated sequential logic. From this state-space a SFC can be built. |
| Subject: | Engenharia electrotécnica, electrónica e informática Electrical engineering, Electronic engineering, Information engineering |
| Scientific areas: | Ciências da engenharia e tecnologias::Engenharia electrotécnica, electrónica e informática Engineering and technology::Electrical engineering, Electronic engineering, Information engineering |
| TID identifier: | 201804026 |
| URI: | https://hdl.handle.net/10216/105445 |
| Document Type: | Dissertação |
| Rights: | openAccess |
| License: | https://creativecommons.org/licenses/by-nc-sa/4.0/ |
| Appears in Collections: | FEUP - Dissertação |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 200864.pdf | Converting LD to SFC (IEC 61131-3) | 2.77 MB | Adobe PDF |  View/Open |
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