'Journal of Accelerator Conferences Website' (JACoW) is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
| Title | Evolution of Control System and PLC Integration at the European XFEL | |
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| Abstract | The Karabo software framework* is a pluggable, distributed control system that offers rapid control feedback to meet the complex requirements of the European X-ray Free Electron Laser facility. Programmable Logic Controllers (PLC) using Beckhoff technology are the main hardware control interface system within the Karabo Control System. The communication between Karabo and PLC currently uses an in-house developed TCP/IP protocol using the same port for operational-related communications and self-description (the description of all available devices sent by PLC). While this simplifies the interface, it creates a notable load on the client and lacks certain features, such as a textual description of each command, property names coherent with the rest of the control system as well as state-awareness of available commands and properties**. To address these issues and to improve user experience, the new implementation will provide a comprehensive self-description, all delivered via a dedicated TCP port and serialized in a JSON format. A Python Asyncio implementation of the Karabo device responsible for message decoding, dispatching to and from the PLC, and establishing communication with relevant software devices in Karabo incorporates lessons learned from prior design decisions to support new updates and increase developer productivity. | |
| Footnotes & References | * Hauf, et al. The Karabo distributed control system J.Sync. Rad.26.5(2019): 1448ff ** T. Freyermuth et al. Progression Towards Adaptability in the PLC Library at the EuXFEL, PCaPAC’22, pp. 102-106. |
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| Paper | download THPDP023.PDF [0.345 MB / 4 pages] | |
| Poster | download THPDP023_POSTER.PDF [0.334 MB] | |
| Cite | download ※ BibTeX ※ LaTeX ※ Text/Word ※ RIS ※ EndNote | |
| Conference | ICALEPCS2023 | |
| Series | International Conference on Accelerator and Large Experimental Physics Control Systems (19th) | |
| Location | Cape Town, South Africa | |
| Date | 09-13 October 2023 | |
| Publisher | JACoW Publishing, Geneva, Switzerland | |
| Editorial Board | Volker RW Schaa (GSI, Darmstadt, Germany); Andy Götz (ESRF, Grenoble, France); Johan Venter (SARAO, Cape Town, South Africa); Karen White (SNS, Oak Ridge, TN, USA); Marie Robichon (ESRF, Grenoble, France); Vivienne Rowland (SARAO, Cape Town, South Africa) | |
| Online ISBN | 978-3-95450-238-7 | |
| Online ISSN | 2226-0358 | |
| Received | 05 October 2023 | |
| Revised | 25 October 2023 | |
| Accepted | 13 December 2023 | |
| Issued/td> | 18 December 2023 | |
| DOI | doi:10.18429/JACoW-ICALEPCS2023-THPDP023 | |
| Pages | 1354-1357 | |
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