EN 61158-4-12:2014

SLOVENSKI STANDARD
01-marec-2015
1DGRPHãþD
SIST EN 61158-4-12:2012
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-12. del:
Specifikacija protokola na ravni podatkovnih povezav - Elementi tipa 12 (IEC 61158
-4-12:2014)
Industrial communication networks - Fieldbus specifications - Part 4-12: Data-link layer
protocol specification - Type 12 elements (IEC 61158-4-12:2014)
Industrielle Kommunikationsnetze - Feldbusse - Teil 4-12: Protokollspezifikation des
Data Link Layer (Sicherungsschicht) - Typ 12-Elemente (IEC 61158-4-12:2014)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 4-12:
Spécification du protocole de la couche liaison de données - Éléments de type 12 (CEI
61158-4-12:2014)
Ta slovenski standard je istoveten z: EN 61158-4-12:2014
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 61158-4-12

NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 25.040.40; 35.100.20; 35.110 Supersedes EN 61158-4-12:2012
English Version
Industrial communication networks - Fieldbus specifications -
Part 4-12: Data-link layer protocol specification - Type 12
elements
(IEC 61158-4-12:2014)
Réseaux de communication industriels - Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 4-12:
bus de terrain - Partie 4-12: Spécification du protocole de la Protokollspezifikation des Data Link Layer
couche liaison de données - Éléments de type 12 (Sicherungsschicht) - Typ 12-Elemente
(CEI 61158-4-12:2014) (IEC 61158-4-12:2014)
This European Standard was approved by CENELEC on 2014-09-19. 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, Former Yugoslav Republic of Macedonia, 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.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61158-4-12:2014 E
Foreword
The text of document 65C/762/FDIS, future edition 3 of IEC 61158-4-12, 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 61158-4-12:2014.

The following dates are fixed:
• latest date by which the document has (dop) 2015-06-19
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-09-19
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersede EN 61158-4-12 :2012.
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.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 61158-4-12:2014 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 61131-2 NOTE Harmonised as EN 61131-2
IEC 61131-3 NOTE Harmonised as EN 61131-3
IEC 61158-1:2014 NOTE Harmonised as EN 61158-1:2014
IEC 61158-2:2014 NOTE Harmonised as EN 61158-2:2014
IEC 61158-5-12:2014 NOTE Harmonised as EN 61158-5-12:2014
IEC 61158-6-12 NOTE Harmonised as EN 61158-6-12
IEC 61784-1 NOTE Harmonised as EN 61784-1
IEC 61784-2 NOTE Harmonised as EN 61784-2

- 3 - EN 61158-4-12:2014
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 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 61158-3-12 -  Industrial communication networks - EN 61158-3-12 -
Fieldbus specifications
Part 3-12: Data-link layer service definition -
Type 12 elements
IEC 61588 -  Precision clock synchronization protocol for - -
networked measurement and control
systems
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 8802-3 2000 Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements
Part 3: Carrier sense multiple access with
collision detection (CSMA/CD) access
method and physical layer specifications
ISO/IEC 9899 -  Information technology - Programming - -
languages - C
ISO/IEC 10731 -  Information technology - Open Systems - -
Interconnection - Basic Reference Model -
Conventions for the definition of OSI
services
IEEE 802.1Q -  IEEE Standard for Local and metropolitan - -
area networks - Media Access Control
(MAC) Bridges and Virtual Bridges
IETF RFC 768 -  User Datagram Protocol - -
IETF RFC 791 -  Internet Protocol - DARPA Internet Program - -
Protocol Specification
IEC 61158-4-12 ®
Edition 3.0 2014-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Fieldbus specifications –

Part 4-12: Data-link layer protocol specification – Type 12 elements

Réseaux de communication industriels – Spécifications des bus de terrain –

Partie 4-12: Spécification du protocole de la couche liaison de données –

Éléments de type 12
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XG
ICS 25.040.40; 35.100.20; 35.110 ISBN 978-2-8322-1724-5

– 2 – IEC 61158-4-12:2014 © IEC 2014
CONTENTS
FOREWORD . 7
NTRODUCTION . 9
1 Scope . 10
1.1 General . 10
1.2 Specifications . 10
1.3 Procedures . 10
1.4 Applicability . 10
1.5 Conformance . 10
2 Normative references . 11
3 Terms, definitions, symbols, abbreviations and conventions . 11
3.1 Reference model terms and definitions . 11
3.2 Service convention terms and definitions . 12
3.3 Common terms and definitions . 13
3.4 Additional Type 12 definitions . 13
3.5 Common symbols and abbreviations . 16
3.6 Additional Type 12 symbols and abbreviations . 17
3.7 Conventions . 18
4 Overview of the DL-protocol . 23
4.1 Operating principle . 23
4.2 Topology . 23
4.3 Frame processing principles . 23
4.4 Data-link layer overview . 24
4.5 Error detection overview . 25
4.6 Node reference model . 25
4.7 Operation overview . 26
5 Frame structure . 27
5.1 Frame coding principles . 27
5.2 Data types and encoding rules . 27
5.3 DLPDU structure . 29
5.4 Type 12 DLPDU structure . 32
5.5 Network variable structure . 48
5.6 Type 12 mailbox structure . 48
6 Attributes . 50
6.1 Management . 50
6.2 Statistics . 65
6.3 Watchdogs . 68
6.4 Slave information interface . 71
6.5 Media independent interface (MII) . 75
6.6 Fieldbus memory management unit (FMMU) . 79
6.7 Sync manager . 82
6.8 Distributed clock . 89
7 DL-user memory . 93
7.1 Overview . 93
7.2 Mailbox access type . 94
7.3 Buffered access type . 96

IEC 61158-4-12:2014 © IEC 2014 – 3 –
8 Type 12: FDL protocol state machines . 97
8.1 Overview of slave DL state machines . 97
8.2 State machine description . 98
Annex A (informative) Type 12: Additional specifications on DL
...