IEC-61139-2 › Industrial networks - Single-drop digital communication interface - Part 2: Functional safety extensions

IEC-61139-2 - EDITION 1.0 - CURRENT


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IEC 61139-2:2022 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,
. wireless communication interfaces or systems,
. integration of SDCI-FS into upper-level systems such as fieldbuses/FSCPs.
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Document Number

IEC 61139-2 Ed. 1.0 b:2022

Revision Level

EDITION 1.0

Status

Current

Publication Date

Aug. 1, 2022

Committee Number

65C