Carroll, M. Ljungquist, G.L. Mansouri, M. Nordt, A. Paulic, D. JACoW Publishing Geneva, Switzerland 2226-0358 978-3-95450-238-7 10.18429/JACoW-ICALEPCS2023-TUPDP078 English 695-698 controls interface operation machine-protect PLC Contribution to a conference proceedings 2024 2024-02 https://doi.org/10.18429/JACoW-ICALEPCS2023-TUPDP078 https://jacow.org/icalepcs2023/papers/tupdp078.pdf The European Spallation Source (ESS) in Sweden is one of the largest science and technology infrastructure projects being built today. The facility design and construction include the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel and 22 state-of-the-art neutron instruments. The Protection Systems Group (PSG) at ESS are responsible for the delivery and management of all the Personnel Safety Systems (PSS) and Machine Protection Systems (MPS), consisting of up to 30 PSS control systems and 6 machine protection systems. Due to the bespoke and evolving nature of the facility, managing the configuration of all these systems poses a significant challenge for the team. This paper will describe the methodology followed to ensure that the correct configuration is correctly implemented and maintained throughout the full engineering lifecycle for these systems.