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EN IEC 61158-5-21:2019

Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer service definition - Type 21 elements EN IEC 61158-5-21:2019

Publication date:   Aug 15, 2019

General information

60.60 Standard published   Jun 21, 2019

CENELEC

CLC/TC 65X Industrial-process measurement, control and automation

European Norm

25.040.40   Industrial process measurement and control | 35.100.70   Application layer | 35.110   Networking

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<div>IEC 61158-5-21:2019 specifies the structure and services of the type 21 IEC fieldbus Application Layer, in conformance with the OSI Basic Reference Model (ISO/IEC 7498) and the OSI Application Layer Structure (ISO/IEC 9545). This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

•added Write and Read service;

•miscellaneous editorial corrections.</div>

Life cycle

PREVIOUSLY

WITHDRAWN
EN 61158-5-21:2012

NOW

PUBLISHED
EN IEC 61158-5-21:2019
60.60 Standard published
Jun 21, 2019