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1 Scope This part of IEC 61139 specifies the extensions to SDCI in IEC 61131‑9 for functional safety. This comprises: • a standardized OSSDe interface for redundant switching signals based on IEC 611…
Overview IEC 61139-2:2022 is an international standard published by the International Electrotechnical Commission (IEC) that defines functional safety extensions for the Single-drop Digital Communica…