EN 61158-4-18:2012

Industrial communication networks - Fieldbus specifications - Part 4-18: Data-link layer protocol specification - Type 18 elements

IEC 61158-3-18:2010(E) specifies procedures for the timely transfer of data and control information from one data-link user entity to a peer user entity, and among the data-link entities forming the distributed data-link service provider; procedures for giving communications opportunities to all participating DL entities, sequentially and in a cyclic manner for deterministic and synchronized transfer at cyclic intervals up to one millisecond; procedures for giving communication opportunities available for time-critical data transmission together with non-time-critical data transmission without prejudice to the time-critical data transmission; procedures for giving cyclic and acyclic communication opportunities for time-critical data transmission with prioritized access; procedures for giving communication opportunities based on standard ISO/IEC 8802-3 medium access control, with provisions for nodes to be added or removed during normal operation; the structure of the fieldbus DLPDUs used for the transfer of data and control information by the protocol of this standard, and their representation as physical interface data units. This second edition cancels and replaces the first edition published in 2007 and constitutes a technical revision. The main changes with respect to the previous edition are: - Editorial improvements and Addition of cyclic data segmenting.

Industrielle Kommunikationsnetze - Feldbusse - Teil 4-18: Protokollspezifikation des Data Link Layer (Sicherungsschicht) - Typ 18-Elemente

Réseaux de communication industriels - Spécifications de bus de terrain - Partie 4-18: Spécification du protocole de couche de liaison de données - Eléments de type 18

La CEI 61158-4-18:2010 spécifie un protocole qui offre à toutes les entités de liaison de données participantes des opportunités de communiquer de manière cyclique à démarrage synchrone, selon un ordre préétabli, et de manière asynchrone cyclique ou acyclique, tel que requis par chaque cycle de chacune de ces entités de liaison de données. Les procédures décrites s'appliquent aux instances de communication entre des systèmes qui prennent en charge des services de communications à contrainte de temps dans la couche de liaison de données des modèles de référence OSI ou de bus de terrain, et qui peuvent être connectés dans un environnement d'interconnexion de systèmes ouverts. Les profils sont un moyen simple à plusieurs attributs de récapituler les capacités d'une mise en uvre, et donc son applicabilité en fonction des différents besoins de communications à contrainte de temps. Cette seconde édition annule et remplace la première édition parue en 2007. Elle constitue une révision technique. Les principales modifications par rapport à l'édition précédente sont: Améliorations rédactionnelles et Ajout d'une segmentation des données cycliques. La présente version bilingue (2012-08) correspond à la version anglaise monolingue publiée en 2010-08.

Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-18. del: Specifikacija protokola na nivoju podatkovnih povezav - Elementi tipa 18 (IEC 61158-4-18:2010)

Nivo podatkovnih povezav omogoča osnovne časovno kritične sporočilne komunikacije med napravami v avtomatizacijskem okolju. Ta protokol omogoča komunikacijske priložnosti vsem sodelujočim entitetam podatkovnih povezav a) na cikličen način s sinhronim začetkom v skladu z vnaprej določenim razporedom in b) na cikličen ali necikličen asinhron način, kot posamezne entitete podatkovnih povezav zahtevajo v vsakem ciklu. Tako lahko ta protokol opredelimo kot protokol, ki asinhrono omogoča cikličen in acikličen dostop s sinhronim ponovnim zagonom vsakega cikla.

General Information

• Status: Published
• Publication Date: 24-May-2012
• Withdrawal Date: 27-Mar-2015
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.20 - Data link layer
• ICS: 35.110 - Networking
• Technical Committee: CLC/TC 65X - Industrial-process measurement, control and automation
• Drafting Committee: IEC/SC 65C - IEC_SC_65C
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 25-May-2012
• Completion Date: 25-May-2012
• Mandate: M/490 - Standardisation mandate to the European Standardisation Organisations (ESOs) to support European Smart Grid deployment
• Ref Project: SIST EN 61158-4-18:2012 - Industrial communication networks - Fieldbus specifications -- Part 4-18: Data-link layer protocol specification - Type 18 elements (IEC 61158-4-18:2010)

Relations

• Replaces: EN 61158-4-18:2008 - Industrial communication networks - Fieldbus specifications - Part 4-18: Data-link layer protocol specification - Type 18 elements
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2012
1DGRPHãþD
SIST EN 61158-4-18:2008
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-18. del:
Specifikacija protokola na nivoju podatkovnih povezav - Elementi tipa 18 (IEC
61158-4-18:2010)
Industrial communication networks - Fieldbus specifications -- Part 4-18: Data-link layer
protocol specification - Type 18 elements (IEC 61158-4-18:2010)
Industrielle Kommunikationsnetze - Feldbusse - Teil 4-18: Protokollspezifikation des
Data Link Layer (Sicherungsschicht) - Typ 18-Elemente (IEC 61158-4-18:2010)
Réseaux de communication industriels - Spécifications de bus de terrain - Partie 4-18:
Spécification du protocole de couche de liaison de données - Eléments de type 18 (CEI
61158-4-18:2010)
Ta slovenski standard je istoveten z: EN 61158-4-18:2012
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.20 Podatkovni povezovalni sloj Data link layer
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61158-4-18
NORME EUROPÉENNE
May 2012
EUROPÄISCHE NORM
ICS 25.040.40; 35.100.20; 35.110 Supersedes EN 61158-4-18:2008

English version
Industrial communication networks -
Fieldbus specifications -
Part 4-18: Data-link layer protocol specification -
Type 18 elements
(IEC 61158-4-18:2010)
Réseaux de communication industriels -  Industrielle Kommunikationsnetze -
Spécifications de bus de terrain - Feldbusse -
Partie 4-18: Spécification du protocole de Teil 4-18: Protokollspezifikation des Data
couche de liaison de données - Link Layer (Sicherungsschicht) -
Eléments de type 18 Typ 18-Elemente
(CEI 61158-4-18:2010) (IEC 61158-4-18:2010)

This European Standard was approved by CENELEC on 2012-03-28. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61158-4-18:2012 E
Foreword
The text of document 65C/605/FDIS, future edition 2 of IEC 61158-4-18, prepared by SC 65C, "Industrial
networks", of IEC/TC 65, "Industrial-process measurement, control and automation" was submitted to the
IEC-CENELEC parallel vote and approved by CENELEC as EN 61158-4-18:2012.

The following dates are fixed:
(dop) 2012-12-28
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2015-03-28

standards conflicting with the
document have to be withdrawn
This document supersedes EN 61158-4-18:2008.
18:2008:
• Editorial improvements;
• Addition of cyclic data segmenting.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 61158-4-18:2010 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC/TR 61158-1:2010 NOTE  Harmonized as CLC/TR 61158-1:2010 (not modified).
IEC 61158-2:2010 NOTE  Harmonized as EN 61158-2:2010 (not modified).
IEC 61158-3-18 NOTE  Harmonized as EN 61158-3-18.
IEC 61158-5-18:2010 NOTE  Harmonized as EN 61158-5-18:2012 (not modified).
IEC 61158-6-18:2010 NOTE  Harmonized as EN 61158-6-18:2012 (not modified).

- 3 - EN 61158-4-18:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

ISO/IEC 7498-1 - Information technology - Open Systems - -
Interconnection - Basic Reference Model:
The Basic Model
ISO/IEC 7498-3 - Information technology - Open Systems - -
Interconnection -
Basic Reference Model: Naming and
addressing
ISO/IEC 13239 2002 Information technology - Telecommunications - -
and information exchange between systems -
High-level data link control (HDLC)
procedures
IEC 61158-4-18 ®
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 4-18: Data-link layer protocol specification – Type 18 elements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
V
ICS 25.04.40; 35.100.20; 35.110 ISBN 978-2-88912-089-5
– 2 – 61158-4-18 © IEC:2010(E)
CONTENTS
FOREWORD.5
INTRODUCTION.7
1 Scope.8
1.1 General .8
1.2 Specifications.8
1.3 Procedures.8
1.4 Applicability.9
1.5 Conformance.9
2 Normative references .9
3 Terms, definitions, symbols, abbreviations and conventions .9
3.1 Reference model terms and definitions.9
3.2 Type 18: Symbols.10
3.3 Type 18: Additional conventions .10
4 DL-protocol overview.10
4.1 Introduction .10
4.2 Polled DLE classes .11
4.3 Packed DLE classes.11
5 DLPDU encoding and transmission.11
5.1 DL – PhL interface .11
5.2 DLPDU transmission encoding .12
6 DLPDU – basic structure .14
6.1 Overview .14
6.2 Address field .14
6.3 Status field .15
6.4 Data field.17
7 DLPDU – Detailed structure, segmenting and reassembly .19
8 Data transmission methods .23
8.1 Overview .23
8.2 Master-polled method.23
8.3 Level A slave-polled method.24
8.4 Level B slave-polled method.25
8.5 Level C slave-polled method .25
8.6 Master-packed method .26
8.7 Slave-packed method .27
9 DL-management – procedures.28
9.1 Overview .28
9.2 Establish master-polled DLE procedure.28
9.3 Establish slave-polled DLE procedure .29
9.4 Establish master-packed DLE procedure .31
9.5 Establish slave-packed DLE procedure .32
9.6 Release connection procedure .33
9.7 Suspend connection procedure .33
9.8 Resume connection procedure .33
9.9 Activate standby Master procedure.34
Bibliography.35

61158-4-18 © IEC:2010(E) – 3 –

Figure 1 – HDLC flag .12

Table 1 – HDLC convention summary .13
Table 2 – HDLC exception summary .14
Table 3 – Master-polled DLE address octet 0.14
Table 4 – Slave-polled DLE address octet 0.15
Table 5 – Master-packed DLE address octet 0 .15
Table 6 – Master-polled DLE status octet 0.16
Table 7 – Master-polled DLE status octet 1.16
Table 8 – Slave-polled DLE status octet 0.17
Table 9 – slave-polled DLE status octet 1 .17
Table 10 – Slave-packed DLE status .17
Table 11 – DLPDU – Master-polled DLE acyclic data field .18
Table 12 – DLPDU – Slave-polled DLE acyclic data field .19
Table 13 – Example master-polled DLE RY contiguous data field .20
Table 14 – Example slave-polled DLE RX contiguous data field.20
Table 15 – Example master-polled DLE RWw contiguous data field .20
Table 16 – Example slave-polled DLE RWr contiguous data field.20
Table 17 – Bit-oriented segment header .21
Table 18 – Polled DLE acyclic segment number field .22
...