Industrial communication networks - Fieldbus specifications - Part 4-14: Data-link layer protocol specification - Type 14 elements

2012-03-22 - Publication editing allocated to cpalagi@cencenelec.eu * Project handled under parallel procedures as FprEN 61158-400 and split into 9 subparts to be published as EN 61158-4-2, 3, 11, 12, 14, 18, 19, 21 and 22 * Supersedes EN 61158-4-14:2008

Industrielle Kommunikationsnetze - Feldbusse - Teil 4-14: Protokollspezifikation des Data Link Layer (Sicherungsschicht) - Typ 14-Elemente

Réseaux de communication industriels - Spécifications de bus de terrain - Partie 4-14: Spécification du protocole de couche de liaison de données - Eléments de Type 14

Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-14. del: Specifikacija protokola na nivoju podatkovnih povezav - Elementi tipa 14 (IEC 61158-4-14:2010)

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
Withdrawn
Publication Date
24-May-2012
Technical Committee
Drafting Committee
Current Stage
6060 - Document made available
Due Date
28-Jun-2012
Completion Date
25-May-2012

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SLOVENSKI STANDARD
SIST EN 61158-4-14:2012
01-julij-2012
1DGRPHãþD
SIST EN 61158-4-14:2008

Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-14. del:

Specifikacija protokola na nivoju podatkovnih povezav - Elementi tipa 14 (IEC
61158-4-14:2010)

Industrial communication networks - Fieldbus specifications - Part 4-14: Data-link layer

protocol specification - Type 14 elements (IEC 61158-4-14:2010)

Industrielle Kommunikationsnetze - Feldbusse - Teil 4-14: Protokollspezifikation des

Data Link Layer (Sicherungsschicht) - Typ 14-Elemente (IEC 61158-4-14:2010)

Réseaux de communication industriels - Spécifications de bus de terrain - Partie 4-14:

Spécification du protocole de couche de liaison de données - Eléments de Type 14 (CEI

61158-4-14:2010)
Ta slovenski standard je istoveten z: EN 61158-4-14:2012
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
SIST EN 61158-4-14:2012 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61158-4-14:2012
---------------------- Page: 2 ----------------------
SIST EN 61158-4-14:2012
EUROPEAN STANDARD
EN 61158-4-14
NORME EUROPÉENNE
May 2012
EUROPÄISCHE NORM
ICS 25.040.40; 35.100.20; 35.110 Supersedes EN 61158-4-14:2008
English version
Industrial communication networks -
Fieldbus specifications -
Part 4-14: Data-link layer protocol specification -
Type 14 elements
(IEC 61158-4-14:2010)
Réseaux de communication industriels - Industrielle Kommunikationsnetze -
Spécifications de bus de terrain - Feldbusse -

Partie 4-14: Spécification du protocole de Teil 4-14: Protokollspezifikation des Data

couche de liaison de données - Link Layer (Sicherungsschicht) -
Eléments de Type 14 Typ 14-Elemente
(CEI 61158-4-14:2010) (IEC 61158-4-14:2010)

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 61158-4-14:2012 E
---------------------- Page: 3 ----------------------
SIST EN 61158-4-14:2012
EN 61158-4-14:2012 - 2 -
Foreword

The text of document 65C/605/FDIS, future edition 2 of IEC 61158-4-14, 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 61158-4-14:2012.
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 61158-4-14:2008.

EN 61158-4-14:2012 includes the following significant technical changes with respect to EN 61158-4-

14:2008:
 Provide stability date for the publication;
 Update the Normative references and Bibliography;
 Corrections of the edit error;
 Specification changes for CPF3;
– update of the requirements for all conformance classes;
– update of the requirements for all conformance services.

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 61158-4-14:2010 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 61158-3-14:2010 NOTE Harmonized as EN 61158-3-14:2012 (not modified).
IEC 61158-6-14:2010 NOTE Harmonized as EN 61158-6-14:2012 (not modified).
IEC 61784-2:2010 NOTE Harmonized as EN 61784-2:2010 (not modified).
---------------------- Page: 4 ----------------------
SIST EN 61158-4-14:2012
- 3 - EN 61158-4-14:2012
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

IEC/TR 61158-1 2010 Industrial communication networks - Fieldbus CLC/TR 61158-1 2010

specifications -
Part 1: Overview and guidance for the
IEC 61158 and IEC 61784 series

IEC 61158-5-14 2010 Industrial communication networks - Fieldbus EN 61158-5-14 2012

specifications -
Part 5-14: Application layer service definition -
Type 14 elements
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 - 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 10731 - Information technology - Open Systems - -
Interconnection - Basic reference model -
Conventions for the definition of OSI services
IETF RFC 791 - Internet Protocol - DARPA Internet Program - -
Protocol Specification
IETF RFC 768 - User Datagram Protocol - -
---------------------- Page: 5 ----------------------
SIST EN 61158-4-14:2012
---------------------- Page: 6 ----------------------
SIST EN 61158-4-14:2012
IEC 61158-4-14
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 4-14: Data-link layer protocol specification – Type 14 elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
ICS 25.04.40; 35.100.20; 35.110 ISBN 978-2-88912-088-8
® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 7 ----------------------
SIST EN 61158-4-14:2012
– 2 – 61158-4-14 © IEC:2010(E)
CONTENTS

FOREWORD...........................................................................................................................4

INTRODUCTION.....................................................................................................................6

1 Scope...............................................................................................................................7

1.1 General ...................................................................................................................7

1.2 Specifications..........................................................................................................7

1.3 Procedures..............................................................................................................7

1.4 Applicability.............................................................................................................8

1.5 Conformance...........................................................................................................8

2 Normative references .......................................................................................................8

3 Terms, definitions, symbols and abbreviations..................................................................8

3.1 Reference model terms and definitions....................................................................9

3.2 Service convention terms and definitions...............................................................11

3.3 ISO/IEC 8802-3 terms ...........................................................................................11

3.4 Common terms and definitions ..............................................................................12

3.5 Symbols and abbreviations....................................................................................15

4 Overview of the DL-protocol ...........................................................................................16

4.1 General .................................................................................................................16

4.2 Services provided by the DL..................................................................................17

4.3 Structure of deterministic communication scheduling.............................................18

5 Procedure of deterministic communication scheduling ....................................................19

5.1 Overview ...............................................................................................................19

5.2 State transitions ....................................................................................................20

5.3 State table.............................................................................................................22

5.4 Function descriptions ............................................................................................23

6 Structure and encoding of ECSME PDU .........................................................................27

6.1 ECSME PDU structure ..........................................................................................27

6.2 Encoding of ECSME packet...................................................................................29

Bibliography..........................................................................................................................32

Figure 1 – Relationships of DLSAPs, DLSAP-addresses and group DL-addresses ................13

Figure 2 – Communication model..........................................................................................16

Figure 3 – Type 14 packet identifier ......................................................................................18

Figure 4 – Time-sharing communication scheduling ..............................................................18

Figure 5 – State transitions of ECSME..................................................................................20

Figure 6 – Format of NonPeriodicDataAnnunciation PDU......................................................27

Figure 7 – Format of EndofNonPeriodicDataSending PDU ....................................................28

Figure 8 – Format of Type 14 PDU........................................................................................28

Figure 9 – Format of Type 14 PDU for FRT application .........................................................28

Table 1 – ECSME state transitions........................................................................................22

Table 2 – NonperiodicDataSendingSuc() description.............................................................23

Table 3 – NonperiodicDataAnnunciation() description ...........................................................23

Table 4 – NonperiodicDataSending() description ..................................................................23

Table 5 – NonperiodicDataSendingSuc() description.............................................................24

---------------------- Page: 8 ----------------------
SIST EN 61158-4-14:2012
61158-4-14 © IEC:2010(E) – 3 –

Table 6 – FirstNonperiodicDataSending() description............................................................24

Table 7 – NonperiodicDataPriority() description ....................................................................24

Table 8 – NonperiodicDataTimeEnough() description............................................................25

Table 9 – NonperiodicDataSending() description ..................................................................25

Table 10 – EndOfNonperiodicDataSending() description.......................................................25

Table 11 – IsDeviceConfigured() description.........................................................................26

Table 12 – CountOffsetTime() description.............................................................................26

Table 13 – DataSendingTiming() description.........................................................................26

Table 14 – RecEndofNonPeriodicDataSending() description .................................................26

Table 15 – NonPeriodicDataAnnunciation message encoding ...............................................29

Table 16 – EndofNonPeriodicDataSending message encoding..............................................30

Table 17 – Type 14 DL-management Tag encoding ..............................................................30

Table 18 – Type 14 message encoding .................................................................................31

Table 19 – Type 14 message for FRT application encoding ..................................................31

---------------------- Page: 9 ----------------------
SIST EN 61158-4-14:2012
– 4 – 61158-4-14 © IEC:2010(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 4-14: Data-link layer protocol specification –
Type 14 elements
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

International Standard IEC 61158-4-14 has been prepared by subcommittee 65C: Industrial

networks, of IEC technical committee 65: Industrial-process measurement, control and

automation.

This second edition cancels and replaces the first edition published in 2007. This edition

constitutes a technical revision.
The main changes with respect to the previous edition are listed below:
• Provide stability date for the publication;
• Update the Normative references and Bibliography;
• Corrections the edit error;
• specification changes for CPF3;
– update of the requirements for all conformance classes;
– update of the requirements for all conformance services.
---------------------- Page: 10 ----------------------
SIST EN 61158-4-14:2012
61158-4-14 © IEC:2010(E) – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
65C/605/FDIS 65C/619/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.
This publication has been drafted in accordance with ISO/IEC Directives, Part 2.

A list of all the parts of the IEC 61158 series, published under the general title Industrial

communication networks – Fieldbus specifications, can be found on the IEC web site.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be:
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

NOTE The revision of this standard will be synchronized with the other parts of the IEC 61158 series.

---------------------- Page: 11 ----------------------
SIST EN 61158-4-14:2012
– 6 – 61158-4-14 © IEC:2010(E)
INTRODUCTION

This part of IEC 61158 is one of a series produced to facilitate the interconnection of

automation system components. It is related to other standards in the set as defined by the

“three-layer” fieldbus reference model described in IEC 61158-1.

The data-link protocol provides the data-link service by making use of the services available

from the physical layer. The primary aim of this standard is to provide a set of rules for

communication expressed in terms of the procedures to be carried out by peer data-link

entities (DLEs) at the time of communication. These rules for communication are intended to

provide a sound basis for development in order to serve a variety of purposes:
a) as a guide for implementors and designers;
b) for use in the testing and procurement of equipment;

c) as part of an agreement for the admittance of systems into the open systems environment;

d) as a refinement to the understanding of time-critical communications within OSI.

This standard is concerned, in particular, with the communication and interworking of sensors,

effectors and other automation devices. By using this standard together with other standards

positioned within the OSI or fieldbus reference models, otherwise incompatible systems may

work together in any combination.

NOTE Use of some of the associated protocol types is restricted by their intellectual-property-right holders. In all

cases, the commitment to limited release of intellectual-property-rights made by the holders of those rights permits

a particular data-link layer protocol type to be used with physical layer and application layer protocols in Type

combinations as specified explicitly in profile parts. Use of the various protocol types in other combinations may

require permission from their respective intellectual-property-right holders.

The International Electrotechnical Commission (IEC) draws attention to the fact that it is

claimed that compliance with this document may involve the use of a patent concerning Type

14 elements and possibly other types given in subclause 5 as f o l l o w s :

CN200410088676.7 [SP] Scheduling method with deterministic communication based on

Ethernet

IEC takes no position concerning the evidence, validity and scope of these patent rights.

The holder of this patent right has assured the IEC that he/she is willing to negotiate licences

either free of charge or under reasonable and non-discriminatory terms and conditions with

applicants throughout the world. In this respect, the statement of the holder of this patent right

is registered with IEC. Information may be obtained from:
[SP] Zhejiang SUPCON Technology Co., Ltd.
Dongqin FENG
Liuhe Road 309, Bingjiang District,
Hangzhou, 310053
China

Attention is drawn to the possibility that some of the elements of this document may be the

subject of patent rights other than those identified above. IEC shall not be held responsible for

identifying any or all such patent rights.

ISO (www.iso.org/patents) and IEC (http://www.iec.ch/tctools/patent_decl.htm) maintain on-

line data bases of patents relevant to their standards. Users are encouraged to consult the

data bases for the most up to date information concerning patents.
---------------------- Page: 12 ----------------------
SIST EN 61158-4-14:2012
61158-4-14 © IEC:2010(E) – 7 –
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 4-14: Data-link layer protocol specification –
Type 14 elements
1 Scope
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

a) in a synchronously-starting cyclic manner, according to a pre-established schedule, and

b) 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

a) 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;

b) procedures for giving communications opportunities to all participating DL-entities,

sequentially and in a cyclic manner for deterministic and synchronized transfer at cyclic

intervals;

c) 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;

d) procedures for giving cyclic and acyclic communication opportunities for time-critical data

transmission with prioritized access;

e) 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;

f) 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.

1.3 Procedures
The procedures are defined in terms of

a) the interactions between peer DL-entities (DLEs) through the exchange of fieldbus

DLPDUs;

b) the interactions between a DL-service (DLS) provider and a DLS-user in the same system

through the exchange of DLS primitives;

c) the interactions between a DLS-provider and a Ph-service provider in the same system

through the exchange of Ph-service primitives.
---------------------- Page: 13 ----------------------
SIST EN 61158-4-14:2012
– 8 – 61158-4-14 © IEC:2010(E)
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 or fieldbus

reference models, 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 standard does not contain tests to demonstrate compliance with such

requirements.
2 Normative references

The following referenced documents are indispensable for the application of this document.

For dated references, only the edition cited applies. For undated references, the latest edition

of the referenced document (including any amendments) applies.

IEC/TR 61158-1:2010 , Industrial communication networks – Fieldbus specifications – Part 1:

Overview and guidance for the IEC 61158 and IEC 61784 series

IEC 61158-5-14:2010 , Industrial communication networks – Fieldbus specifications – Part 5-

14: Application layer service definition – Type 14 elements

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, 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 10731, Information technology – Open Systems Interconnection – Basic Reference

Model – Conventions for the definition of OSI services
IETF RFC 768, User Datagram Protocol (UDP), available at
IETF RFC 791, Internet protocol, available at
3 Terms, definitions, symbols and abbreviations

For the purposes of this document, the following terms, definitions, symbols and abbreviations

apply.
___________
To be published
---------------------- Page: 14 ----------------------
SIST EN 61158-4-14:2012
61158-4-14 © IEC:2010(E) – 9 –
3.1 Reference model terms and definitions

This standard is based in part on the concepts developed in ISO/IEC 7498-1 and ISO/IEC

7498-3, and makes use of the following terms defined therein.
3.1.1 called-DL-address [ISO/IEC 7498-3]
3.1.2 calling-DL-address [ISO/IEC 7498-3]
3.1.3 centralized multi-end-point-connection [ISO/IEC 7498-1]
3.1.4 correspondent (N)-entities [ISO/IEC 7498-1]
correspondent DL-entities (N=2)
correspondent Ph-entities (N=1)
3.1.5 demultiplexing [ISO/IEC 7498-1]
3.1.6 DL-address [ISO/IEC 7498-3]
3.1.7 DL-address-mapping [ISO/IEC 7498-1]
3.1.8 DL-connection [ISO/IEC 7498-1]
3.1.9 DL-connection-end-point [ISO/IEC 7498-1]
3.1.10 DL-connection-end-point-identifier [ISO/IEC 7498-1]
3.1.11 DL-connection-mode transmission [ISO/IEC 7498-1]
3.1.12 DL-connectionless-mode transmission [ISO/IEC 7498-1]
3.1.13 DL-data-sink [ISO/IEC 7498-1]
3.1.14 DL-data-source [ISO/IEC 7498-1]
3.1.15 DL-duplex-transmission [ISO/IEC 7498-1]
3.1.16 DL-facility [ISO/IEC 7498-1]
3.1.17 DL-local-view [ISO/IEC 7498-3]
3.1.18 DL-name [ISO/IEC 7498-3]
3.1.19 DL-protocol [ISO/IEC 7498-1]
3.1.20 DL-protocol-connection-identifier [ISO/IEC 7498-1]
3.1.21 DL-protocol-control-information [ISO/IEC 7498-1]
3.1.22 DL-protocol-data-unit [ISO/IEC 7498-1]
3.1.23 DL-protocol-version-identifier [ISO/IEC 7498-1]
3.1.24 DL-relay [ISO/IEC 7498-1]
3.1.25 DL-service-connection-identifier [ISO/IEC 7498-1]
3.1.26 DL-service-data-unit [ISO/IEC 7498-1]
3.1.27 DL-simplex-transmission [ISO/IEC 7498-1]
3.1.28 DL-subsystem [ISO/IEC 7498-1]
3.1.29 DL-user-data [ISO/IEC 7498-1]
---------------------- Page: 15 ----------------------
SIST EN 61158-4-14:2012
– 10 – 61158-4-14 © IEC:2010(E)
3.1.30 flow control [ISO/IEC 7498-1]
3.1.31 layer-management [ISO/IEC
...

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