Contribution to a conference proceedings

GSI-2025-00515

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Working Together for Safer Systems: A Collaboration Model for Verification of PLC Code

Lopez-Miguel, I. D. (Corresponding author) ; Betz, C.GSI* ; Blanco Viñuela, E. ; Fernández Adiego, B. (Corresponding author) ; Salinas, M.GSI*

2024
JACoW Publishing Geneva, Switzerland

Please use a persistent id in citations: doi:10.18429/JACOW-ICALEPCS2023-TUPDP001  doi:10.15120/GSI-2025-00515

Abstract: Formal verification techniques are widely used in critical industries to minimize software flaws. However, despite the benefits and recommendations of the functional safety standards, such as IEC 61508 and IEC 61511, formal verification is not yet a common practice in the process industry and large scientific installations. This is mainly due to its complexity and the need for formal methods experts. At CERN, the PLCverif tool was developed to verify PLC programs formally. Although PLCverif hides most of the complexity of using formal methods and removes barriers to formally verifying PLC programs, engineers trying to verify their developments still encounter different obstacles. These challenges include the formalization of program specifications or the creation of formal models. This paper discusses how to overcome these obstacles by proposing a collaboration model that effectively allows the verification of critical PLC programs and promotes knowledge transfer between organizations. By providing a simpler and more accessible way to carry out formal verification, tools like PLCverif can play a crucial role in achieving this goal. The collaboration model splits the specification, development, and verification tasks between organizations. This approach is illustrated through a case study between GSI and CERN.

Keyword(s): Accelerator Physics ; General

Note: Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license

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Contributing Institute(s):

1. Control Systems (ACO)

Research Program(s):

1. 899 - ohne Topic (POF4-899) (POF4-899)

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2025

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Database coverage:
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