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IEC

PT 61139-2 - TC 65/SC 65C/PT 61139-2

TC 65/SC 65C/PT 61139-2

General Information

Status
Active
Work Field
Information technology
Parent
SC 65C - Industrial networks

Frequently Asked Questions

PT 61139-2 is a Technical Committee within the International Electrotechnical Commission (IEC). It is named "TC 65/SC 65C/PT 61139-2". This committee has published 1 standards.

PT 61139-2 develops IEC standards in the area of Information technology. Currently, there are 1 published standards from this technical committee.

The International Electrotechnical Commission (IEC) is the world's leading organization for the preparation and publication of international standards for electrical, electronic, and related technologies. Founded in 1906, the IEC provides a global platform for companies, industries, and governments to meet, discuss, and develop the international standards they require.

A Technical Committee (TC) in IEC is a group of experts responsible for developing international standards in a specific technical area. TCs are composed of national member body delegates and work through consensus to create standards that meet global industry needs. Each TC may have subcommittees (SCs) and working groups (WGs) for specialized topics.

Standardization Organization
ICS
Directive
Mandate
50
IEC
IEC 61139-2:2022(Main)
Industrial networks - Single-drop digital communication interface - Part 2: Functional safety extensions

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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