SIST EN 61158-3-8:2008

SLOVENSKI STANDARD
SIST EN 61158-3-8:2008
01-junij-2008
1DGRPHãþD
SIST EN 61158-3:2004

Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 3-8. del:
Definicija opravil na nivoju podatkovnih povezav - Elementi tipa 8 (IEC 61158-3-
8:2007)
Industrial communication networks - Fieldbus specifications - Part 3-8: Data-link layer
service definition - Type 8 elements
Industrielle Kommunikationsnetze - Feldbusse - Teil 3-8: Dienstfestlegungen des Data
Link Layer (Sicherungsschicht) - Typ 8-Elemente
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 3-8:
Définition des services des couches de liaison de données - Eléments de type 8
Ta slovenski standard je istoveten z: EN 61158-3-8:2008
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 61158-3-8:2008 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61158-3-8:2008

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SIST EN 61158-3-8:2008


EUROPEAN STANDARD
EN 61158-3-8

NORME EUROPÉENNE
February 2008
EUROPÄISCHE NORM

ICS 35.100.20; 25.040.40 Partially supersedes EN 61158-3:2004


English version


Industrial communication networks -
Fieldbus specifications -
Part 3-8: Data-link layer service definition -
Type 8 elements
(IEC 61158-3-8:2007)


Réseaux de communication industriels -  Industrielle Kommunikationsnetze -
Spécifications des bus de terrain - Feldbusse -
Partie 3-8: Définition des services Teil 3-8: Dienstfestlegungen des
des couches de liaison de données - Data Link Layer (Sicherungsschicht) -
Eléments de type 8 Typ 8-Elemente
(CEI 61158-3-8:2007) (IEC 61158-3-8:2007)




This European Standard was approved by CENELEC on 2008-02-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, 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 and the United Kingdom.

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

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61158-3-8:2008 E

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SIST EN 61158-3-8:2008
EN 61158-3-8:2008 - 2 -
Foreword
The text of document 65C/473/FDIS, future edition 1 of IEC 61158-3-8, 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 was approved by CENELEC as EN 61158-3-8 on 2008-02-01.
This and the other parts of the EN 61158-3 series supersede EN 61158-3:2004.
With respect to EN 61158-3:2004 the following changes were made:
– deletion of Type 6 fieldbus, and the placeholder for a Type 5 fieldbus data-link layer, for lack of market
relevance;
– addition of new fieldbus types;
– partition into multiple parts numbered 3-1, 3-2, …, 3-19.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-11-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-02-01
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 the
EN 61784 series. Use of the various protocol types in other combinations may require permission from their respective
intellectual-property-right holders.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61158-3-8:2007 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 61158-2 NOTE  Harmonized as EN 61158-2:2008 (not modified).
IEC 61158-4-8 NOTE  Harmonized as EN 61158-4-8:2008 (not modified).
IEC 61158-5-8 NOTE  Harmonized as EN 61158-5-8:2008 (not modified).
IEC 61158-6-8 NOTE  Harmonized as EN 61158-6-8:2008 (not modified).
IEC 61784-1 NOTE  Harmonized as EN 61784-1:2008 (not modified).
IEC 61784-2 NOTE  Harmonized as EN 61784-2:2008 (not modified).
__________

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Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

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.

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

1) 2)
ISO/IEC 7498-1 - Information technology - Open Systems EN ISO/IEC 7498-1 1995
Interconnection - Basic Reference Model:
The Basic Model


1)
ISO/IEC 7498-3 - Information technology - Open Systems - -
Interconnection - Basic Reference Model:
Naming and addressing


1)
ISO/IEC 10731 - Information technology - Open Systems - -
Interconnection - Basic Reference Model -
Conventions for the definition of OSI services




1)
Undated reference.
2)
Valid edition at date of issue.

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SIST EN 61158-3-8:2008

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SIST EN 61158-3-8:2008
IEC 61158-3-8
Edition 1.0 2007-12
INTERNATIONAL
STANDARD

Industrial communication networks – Fieldbus specifications –
Part 3-8: Data-link layer service definition – Type 8 elements


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
V
ICS 35.100.20; 25.040.40 ISBN 2-8318-9414-X

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CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
1.1 Overview .7
1.2 Specifications .7
1.3 Conformance.7
2 Normative references.8
3 Terms, definitions, symbols, abbreviations and conventions .8
3.1 Reference model terms and definitions .8
3.2 Service convention terms and definitions .9
3.3 Common data-link service terms and definitions.9
3.4 Additional Type 8 data-link specific definitions.11
3.5 Common symbols and abbreviations .12
3.6 Common conventions .12
4 Data-link service and concepts .13
4.1 Overview .13
4.2 Sequence of primitives .15
4.3 Connection-mode data-link services.18
5 DL-management service .22
5.1 Scope.22
5.2 Facilities of the DL-management service.22
5.3 Overview of services.22
5.4 Overview of interactions.23
5.5 Detailed specification of services and interactions.26
Bibliography .32

Figure 1 – Relationships of DLSAPs, DLSAP-addresses and group DL-addresses .10
Figure 2 – Relationships of DLCEPs and DLCEP-addresses to default DLSAP.14
Figure 3 – Sequence of primitives for the buffer data transfer .17
Figure 4 – Normal data transfer service between a master and a slave .18
Figure 5 – Sequence of primitives for a failed normal data transfer .18
Figure 6 – Sequence of primitives for the reset service .24
Figure 7 – Sequence of primitives for the event service .24
Figure 8 – Sequence of primitives for the set value service.25
Figure 9 – Sequence of primitives for the get value service.25
Figure 10 – Sequence of primitives for the get current configuration service .25
Figure 11 – Sequence of primitives for the get active configuration service .25
Figure 12 – Sequence of primitives for the set active configuration service .26

Table 1 – Summary of DL-connection-mode primitives and parameters.16
Table 2 – Put buffer primitive and parameters .19
Table 3 – Get buffer primitive and parameters .19
Table 4 – Buffer received primitive and parameters .20
Table 5 – Normal data transfer primitive and parameters .21

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Table 6 – Summary of DL-management primitives and parameters .24
Table 7 – Reset service primitives and parameters .26
Table 8 – Event service primitive and parameters.27
Table 9 – Set value service primitives and parameters.27
Table 10 – Get value service primitives and parameters .28
Table 11 – Get current configuration service primitives and parameters .29
Table 12 – Get active configuration service primitives and parameters.30
Table 13 – The active configuration parameter .30
Table 14 – Set active configuration service primitives and parameters .31

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –

Part 3-8: Data-link layer service definition – Type 8 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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
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 the IEC 61784 series. Use of the various protocol types in other combinations
may require permission of their respective intellectual-property-right holders.
International Standard IEC 61158-3-8 has been prepared by subcommittee 65C: Industrial
networks, of IEC technical committee 65: Industrial-process measurement, control and
automation.
This first edition and its companion parts of the IEC 61158-3 subseries cancel and replace
IEC 61158-3:2003. This edition of this part constitutes an editorial revision.
This edition includes the following significant changes with respect to the previous edition:
a) deletion of the former Type 6 fieldbus, and the placeholder for a Type 5 fieldbus data-link
layer, for lack of market relevance;
b) addition of new types of fieldbuses;
c) division of this part into multiple parts numbered 3-1, 3-2, …, 3-19.

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SIST EN 61158-3-8:2008
61158-3-8 © IEC:2007(E) – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
65C/473/FDIS 65C/484/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.
The committee has decided that the contents of this publication will remain unchanged until the
maintenance result 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.
The list of all the parts of the IEC 61158 series, under the general title Industrial
communication networks – Fieldbus specifications, can be found on the IEC web site.

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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/TR 61158-1.
Throughout the set of fieldbus standards, the term “service” refers to the abstract capability
provided by one layer of the OSI Basic Reference Model to the layer immediately above. Thus,
the data-link layer service defined in this standard is a conceptual architectural service,
independent of administrative and implementation divisions.

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INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –

Part 3-8: Data-link layer service definition – Type 8 elements


1 Scope
1.1 Overview
This part of IEC 61158 provides common elements for basic time-critical messaging
communications between devices in an automation environment. The term “time-critical” is
used to represent the presence of a time-window, within which one or more specified actions
are required to be completed with some defined level of certainty. Failure to complete specified
actions within the time window risks failure of the applications requesting the actions, with
attendant risk to equipment, plant and possibly human life.
This standard defines in an abstract way the externally visible service provided by the Type 8
fieldbus data-link layer in terms of
a) the primitive actions and events of the service;
b) the parameters associated with each primitive action and event, and the form which they
take; and
c) the interrelationship between these actions and events, and their valid sequences.
The purpose of this standard is to define the services provided to
• the Type 8 fieldbus application layer at the boundary between the application and data-link
layers of the fieldbus reference model, and
• systems management at the boundary between the data-link layer and systems
management of the fieldbus reference model.
1.2 Specifications
The principal objective of this standard is to specify the characteristics of conceptual data-link
layer services suitable for time-critical communications, and thus supplement the OSI Basic
Reference Model in guiding the development of data-link protocols for time-critical
communications. A secondary objective is to provide migration paths from previously-existing
industrial communications protocols.
This specification may be used as the basis for formal DL-Programming-Interfaces.
Nevertheless, it is not a formal programming interface, and any such interface will need to
address implementation issues not covered by this specification, including
a) the sizes and octet ordering of various multi-octet service parameters, and
b) the correlation of paired request and confirm, or indication and response, primitives.
1.3 Conformance
This standard does not specify individual implementations or products, nor does it constrain the
implementations of data-link entities within industrial automation systems.
There is no conformance of equipment to this data-link layer service definition standard.
Instead, conformance is achieved through implementation of the corresponding data-link
protocol that fulfills the Type 8 data-link layer services defined in this standard.

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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.
ISO/IEC 7498-1, Information technology – Open Systems Interconnection – Basic Reference
Model — Basic Reference Model: The Basic Model
ISO/IEC 7498-3, Information technology – Open Systems Interconnection – Basic Reference
Model — Basic Reference Model: Naming and addressing
ISO/IEC 10731, Information technology – Open Systems Interconnection – Basic Reference
Model – Conventions for the definition of OSI services
3 Terms, definitions, symbols, abbreviations and conventions
For the purposes of this document, the following terms, definitions, symbols, abbreviations and
conventions apply.
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 DL-address [7498-3]
3.1.2 DL-connection [7498-1]
3.1.3 DL-connection-end-point [7498-1]
3.1.4 DL-connection-end-point-identifier [7498-1]
3.1.5 DL-connection-mode transmission [7498-1]
3.1.6 DL-connectionless-mode transmission [7498-1]
3.1.7 correspondent (N)-entities [7498-1]
   correspondent DL-entities  (N=2)
   correspondent Ph-entities  (N=1)
3.1.8 (N)-entity [7498-1]
 DL-entity  (N=2)
 Ph-entity  (N=1)
[7498-1]
3.1.9 (N)-layer
 DL-layer  (N=2)
 Ph-layer  (N=1)
3.1.10 layer-management [7498-1]
3.1.11 DL-local-view [7498-3]
3.1.12 DL-name [7498-3]
3.1.13 naming-(addressing)-domain [7498-3]
3.1.14 peer-entities [7498-1]

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3.1.15 primitive name [7498-3]
3.1.16 DL-protocol [7498-1]
3.1.17 DL-protocol-connection-identifier [7498-1]
3.1.18 DL-protocol-data-unit [7498-1]
3.1.19 reset [7498-1]
3.1.20 (N)-service [7498-1]
  DL-service  (N=2)
  Ph-service  (N=1)
[7498-1]
3.1.21 (N)-service-access-point
  DL-service-access-point  (N=2)
  Ph-service-access-point  (N=1)
3.1.22 DL-service-access-point-address [7498-3]
3.1.23 DL-service-connection-identifier [7498-1]
3.1.24 DL-service-data-unit [7498-1]
3.1.25 DL-simplex-transmission [7498-1]
3.1.26 systems-management [7498-1]
3.1.27 DLS-user-data [7498-1]

3.2 Service convention terms and definitions
This standard also makes use of the following terms defined in ISO/IEC 10731 as they apply to
the data-link layer.
3.2.1 confirm (primitive)
3.2.2 DL-service-primitive;
 primitive
3.2.3 DL-service-provider
3.2.4 DL-service-user
3.2.5 indication (primitive);
   acceptor.deliver (primitive)
3.2.6 request (primitive);
   requestor.submit (primitive)
3.2.7 response (primitive);
   acceptor.submit (primitive)
3.3 Common data-link service terms and definitions
NOTE  This subclause contains the common terms and definitions used by Type 8.
3.3.1
link, local link
single DL-subnetwork in which any of the connected DLEs may communicate directly, without
any intervening DL-relaying, whenever all of those DLEs that are participating in an instance of

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communication are simultaneously attentive to the DL-subnetwork during the period(s) of
attempted communication
3.3.2
DLSAP
distinctive point at which DL-services are provided by a single DL-entity to a single higher-layer
entity
NOTE  This definition, derived from ISO/IEC 7498-1, is repeated here to facilitate understanding of the critical
distinction between DLSAPs and their DL-addresses.
DLS-user-entity
DLS-user-entity
DLS-users
DLSAP DLSAP DLSAP
DLSAP-
address DLSAP-
DLSAP-
group DL-
address
addresses
address
DL-layer
DL-entity
PhSA P PhSA P
Ph-layer

NOTE 1  DLSAPs and PhSAPs are depicted as ovals spanning the boundary between two adjacent layers.
NOTE 2  DL-addresses are depicted as designating small gaps (points of access) in the DLL portion of a DLSAP.
NOTE 3  A single DL-entity may have multiple DLSAP-addresses and group DL-addresses associated with a single
DLSAP.
Figure 1 – Relationships of DLSAPs, DLSAP-addresses and group DL-addresses
3.3.3
DL(SAP)-address
either an individual DLSAP-address, designating a single DLSAP of a single DLS-user, or a
group DL-address potentially designating multiple DLSAPs, each of a single DLS-user
NOTE  This terminology is chosen because ISO/IEC 7498-3 does not permit the use of the term DLSAP-address to
designate more than a single DLSAP at a single DLS-user.
3.3.4
extended link
DL-subnetwork, consisting of the maximal set of links interconnected by DL-relays, sharing a
single DL-name (DL-address) space, in which any of the connected DL-entities may
communicate, one with another, either directly or with the assistance of one or more of those
intervening DL-relay entities
NOTE  An extended link may be composed of just a single link.

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3.3.5
frame
denigrated synonym for DLPDU
3.3.6
receiving DLS-user
DL-service user that acts as a recipient of DLS-user-data
NOTE  A DL-service user can be concurrently both a sending and receiving DLS-user.
3.3.7
sending DLS-user
DL-service user that acts as a source of DLS-user-data
3.4 Additional Type 8 data-link specific definitions
3.4.1
device
slave or master
3.4.2
device code
two octets which characterize the properties of a slave
3.4.3
DL-segment
group of slaves in consecutive order
3.4.4
DL-segment level
nesting level number of a DL-segment
3.4.5
master
DL-entity controlling the data transfer on the local link and initiating the medium access of the
slaves by starting the DLPDU cycle
3.4.6
slave
DL-entity accessing the medium only after being initiated by the preceding slave or master

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3.5 Common symbols and abbreviations
NOTE  This subclause contains the common symbols and abbreviations used by Type 8.
DL- Data-link layer (as a prefix)
DLC DL-connection
DLCEP DL-connection-end-point
DLE DL-entity (the local active instance of the data-link layer)
DLL DL-layer
DLPCI DL-protocol-control-information
DLPDU DL-protocol-data-unit
DLM DL-management
DLMS DL-management Service
DLS DL-service
DLSAP DL-service-access-point
DLSDU DL-service-data-unit
FIFO First-in first-out (queuing method)
OSI Open systems interconnection
Ph- Physical layer (as a prefix)
Ph-entity (the local active instance of the physical layer)
PhE
Ph-layer
PhL
Quality of service
QoS

3.6 Common conventions
...