BS EN IEC 61139-2:2022 PDF

Industrial networks. Single-drop digital communication interface - Functional safety extensions

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BS EN IEC 61139-2:2022

Industrial networks. Single-drop digital communication interface - Functional safety extensions

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Abstract

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 61131‑2,

• minor modifications/extensions to state machines of SDCI to support the safety operations,

• a lean functional safety communication protocol on top of the standard SDCI communication which is a black channel according to IEC 61784‑3:2021,

• protocol management functions for configuration, parameterization, and commissioning,

• IODD extensions for functional safety,

• a Device tool interface to support Dedicated Tools according to functional safety standards.

This document does not cover:

• communication interfaces or systems including multi-point or multi-drop linkages,

• communication interfaces or systems including multi-channel or encrypted linkages, ...

BS EN IEC 61139-2:2022 PDF