47 Lüghausen, Kai Dziewiecki, Michal Kaiser, Karlheinz May, Gerhard Rauch, Stefan Thieme, Matthias ACO Proceedings of the 13th International Workshop on Emerging Technologies and Scientific Facilities Controls, PCaPAC2022, Dolní Brežany, Czech Republic 13th International Workshop on Emerging Technologies and Scientific Facilities Controls JACoW Publishing Geneva Dolní Brežany, Czech Republic 10.18429/JACOW-PCAPAC2022-THP15 English 3 pages The end-of-life of many components brought the need for a redesign of our main Control System Front-End - the SCU (Scaleable Control Unit). It was a chance to make improvements and use more powerful state-of-the-art core components. This included a new Arria 10 FPGA and a completely redesigned housekeeping circuit based on an AVR microcontroller. Further, the project was cleaned by removing unused components and features. Main frame conditions stay fixed for backward compatibility, like the mechanical form factor or the 16-bit parallel bus. Majority of gateware and firmware could be reused and just some adaptations for the new FPGA were needed. Nevertheless, providing continuous compatibility with legacy peripherals needed a substantial effort. Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. ; Proceedings of the 13th International Workshop on Emerging Technologies and Scientific Facilities Controls, PCaPAC2022, Dolní Brežany, Czech Republic ; 33, ; PUB:(DE-HGF)8, ; PUB:(DE-HGF)7, ; Accelerator Physics Hardware Technologies and Component Integration, System Modeling and Automation Contribution to a conference proceedings 2023 2022-10-04 - 2022-10-07 GSI-2025-00606 2022-10-04 - 2022-10-07 2023 https://repository.gsi.de/record/358724 https://doi.org/10.18429/JACOW-PCAPAC2022-THP15