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  • BSI
    BS EN 61158-4-12:2014 Industrial communication networks. Fieldbus specifications - Data-link layer protocol specification. Type 12 elements
    Edition: 2014
    $641.56
    / user per year

Description of BS EN 61158-4-12:2014 2014

1.1 General

The data-link layer provides basic time-critical messaging communications between devices in an automation environment.

This protocol provides communication opportunities to all participating data-link entities

  1. in a synchronously-starting cyclic manner, and

  2. in a cyclic or acyclic asynchronous manner, as requested each cycle by each of those data-link entities.

Thus this protocol can be characterized as one which provides cyclic and acyclic access asynchronously but with a synchronous restart of each cycle.

1.2 Specifications

This standard specifies

  1. procedures for the transfer of data and control information from one data-link user entity to one or more user entity;

  2. the structure of the DLPDUs used for the transfer of data and control information by the protocol of this standard, and their representation as physical interface data units.

1.3 Procedures

The procedures are defined in terms of

  1. the interactions between DL-entities (DLEs) through the exchange of DLPDUs;

  2. the interactions between a DL-service (DLS) provider and a DLS-user in the same system through the exchange of DLS primitives;

  3. the interactions between a DLS-provider and the MAC services of ISO/IEC 8802-3.

1.4 Applicability

These procedures are applicable to instances of communication between systems which support time-critical communications services within the data-link layer of the OSI reference model, and which require the ability to interconnect in an open systems interconnection environment.

Profiles provide a simple multi-attribute means of summarizing an implementation’s capabilities, and thus its applicability to various time-critical communications needs.

1.5 Conformance

This standard also specifies conformance requirements for systems implementing these procedures. This part of this standard does not contain tests to demonstrate compliance with such requirements.



Standard NumberBS EN 61158-4-12:2014
TitleIndustrial communication networks. Fieldbus specifications - Data-link layer protocol specification. Type 12 elements
StatusWithdrawn
Publication Date2014-11-30
Withdrawn Date2022-05-31
ReplacesBS EN 61158-4-12:2012
Replaced ByBS EN IEC 61158-4-12:2019
Identical National Standard OfEN 61158-4-12:2014, EN 61508-6:2010, IEC 61158-4-12:2014, IEC 61508-6:2010
DescriptorsData transmission, Process control, Communication networks, Open systems interconnection, Industrial, Automatic control systems, Interfaces (data processing), Data link layer (OSI), Computer networks, Bus networks, Communication procedures, Fieldbus
ICS25.040.40 Industrial process measurement and control, 35.110 Networking, 35.100.20 Data link layer
CommitteeGEL/65/3
ISBN978 0 580 79443 8
PublisherBSI
Pages144

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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