IEC 61158-6-22:2010
(Main)Industrial communication networks - Fieldbus specifications - Part 6-22: Application layer protocol specification - Type 22 elements
Industrial communication networks - Fieldbus specifications - Part 6-22: Application layer protocol specification - Type 22 elements
IEC 61158-6-22:2010 defines in an abstract way the externally visible behavior provided by the different Types of the fieldbus Application Layer. It specifies the protocol provided to:
- define the wire-representation of the service primitives defined in IEC 61158-5-22:2010; and - define the externally visible behavior associated with their transfer.
This standard specifies the protocol of the IEC fieldbus Application Layer, in conformance with the OSI Basic Reference Model (ISO/IEC 7498) and the OSI Application Layer Structure (ISO/IEC 9545). This standard cancels and replaces IEC/PAS 61158-6-22 published in 2009. It constitutes a technical revision. This bilingual version published in 2012-07 corresponds to the English version published in 2010-08.
Réseaux de communication industriels - Spécifications de bus de terrain - Partie 6-22: Spécification de protocoles de couche application - Eléments de Type 22
La CEI 61158-6-22:2010 définit de manière abstraite le comportement, visible par un observateur externe, assuré par les différents Types de la couche application de bus de terrain. Elle vise à définir le protocole mis en place pour:
- définir la représentation filaire des primitives de service définies dans la norme CEI 61158-5-22:2010, et
- définir le comportement visible de l'extérieur associé à leur transfert.
La présente norme spécifie le protocole de la couche application de bus de terrain de la CEI, en conformité avec le modèle de référence de base OSI (ISO/CEI 7498) et avec la structure de la couche application OSI (ISO/CEI 9545). Cette norme annule et remplace la norme CEI/PAS 61158-6-22 publiée en 2009. Elle constitue une révision technique. La présente version bilingue (2012-07) correspond à la version anglaise monolingue publiée en 2010-08.
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IEC 61158-6-22
®
Edition 1.0 2010-08
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 6-22: Application layer protocol specification – Type 22 elements
IEC 61158-6-22:2010(E)
---------------------- Page: 1 ----------------------
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IEC 61158-6-22
®
Edition 1.0 2010-08
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 6-22: Application layer protocol specification – Type 22 elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XC
ICS 25.04.40; 35.100.70; 35.110 ISBN 978-2-88912-136-6
® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – 61158-6-22 © IEC:2010(E)
CONTENTS
FOREWORD.6
INTRODUCTION.8
1 Scope.9
1.1 General .9
1.2 Specifications.10
1.3 Conformance.10
2 Normative references .10
3 Terms, definitions, abbreviations, symbols and conventions .11
3.1 Terms and definitions from other ISO/IEC standards .11
3.2 Fieldbus application-layer specific definitions .11
3.3 Abbreviations and symbols.15
3.4 Conventions .17
4 Application layer protocol specification .18
4.1 Operating principle .18
4.2 Device reference models .19
4.3 Application layer structure .21
5 FAL syntax description .21
5.1 Introduction and coding principles .21
5.2 Data type encoding .21
5.3 CeS encoding.25
5.4 ISO/IEC 8802-3 DLPDU communication inside Type 22 RTFL .72
5.5 Management encoding .72
6 FAL protocol state machines .73
6.1 Overview .73
6.2 Fieldbus service protocol machine (FSPM).74
6.3 Application relationship protocol machine (ARPM).74
6.4 DLL mapping protocol machine .74
7 AP-context state machine.75
8 FAL service protocol machine (FSPM).75
9 Application layer state machine (ALSM) .75
9.1 Description.75
9.2 States .77
9.3 Primitive definitions .78
9.4 State table.79
9.5 AL-service forwarding depending on AL-state.79
10 DLL mapping protocol machine (DMPM).80
10.1 Overview .80
10.2 Primitives exchanged between ALSM and DMPM .80
10.3 Primitives exchanged between DLL and DMPM .84
10.4 ALSM to DLL mapping.86
Bibliography.88
Figure 1 – RTFL device reference model .20
Figure 2 – RTFN device reference model.21
Figure 3 – Encoding of TimeOfDay value .22
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61158-6-22 © IEC:2010(E) – 3 –
Figure 4 – Encoding of TimeDifference value.23
Figure 5 – Object dictionary addressing schema .26
Figure 6 – Relationships among protocol machines and adjacent layers .73
Figure 7 – ALSM protocol machine .74
Figure 8 – ALSM diagram .76
Table 1 – PDU element definition.18
Table 2 – Object definition .18
Table 3 – Transfer syntax for bit sequences.22
Table 4 – Transfer syntax for Integer data type.24
Table 5 – Transfer syntax for Unsigned data type .24
Table 6 – Object dictionary structure.25
Table 7 – Object dictionary object type definitions .26
Table 8 – Basic data type definitions.27
Table 9 – Complex data type definition .28
Table 10 – Communication section .29
Table 11 – Device type .31
Table 12 – Error register encoding.31
Table 13 – Error register.31
Table 14 – Object definition template.32
Table 15 – Encoding of event log entries .32
Table 16 – Event log.33
Table 17 – Manufacturer device name .33
Table 18 – Manufacturer HW version .34
Table 19 – Manufacturer SW version .34
Table 20 – CL configuration .34
Table 21 – Time sync IRQ configuration encoding .36
Table 22 – Time sync IRQ configuration .36
Table 23 – Time sync IRQ state.37
Table 24 – Store parameters read information .38
Table 25 – Store parameters.38
Table 26 – Restore parameters read information .39
Table 27 – Restore default parameters .39
Table 28 – Diagnostic information.41
Table 29 – Diagnostic threshold.44
Table 30 – IP address EMCY .45
Table 31 – Inhibit time EMCY.46
Table 32 – Encoding of consumer heartbeat entries.46
Table 33 – Consumer heartbeat list .47
Table 34 – Producer heartbeat parameter.47
Table 35 – Identity object.49
Table 36 – SDO protocol timeout .51
Table 37 – Enable client SDO parameter .51
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– 4 – 61158-6-22 © IEC:2010(E)
Table 38 – Enable EMCY.52
Table 39 – PDO timeout tolerance .52
Table 40 – Store EDS .52
Table 41 – Storage format .53
Table 42 – OS command .53
Table 43 – OS command mode .54
Table 44 – OS debugger interface .55
Table 45 – OS prompt.56
Table 46 – Module list.57
Table 47 – Emergency subscriber encoding.57
Table 48 – Emergency subscriber.57
Table 49 – Client SDO parameter encoding .58
Table 50 – Client SDO parameter .58
Table 51 – Receive PDO communication parameter .59
Table 52 – Transmit PDO communication parameter .61
Table 53 – Mapping format .63
Table 54 – Receive PDO mapping parameter.63
Table 55 – Transmit PDO mapping parameter .64
Table 56 – Initiate SDO expedited download request .65
Table 57 – Initiate SDO expedited download response .65
Table 58 – Initiate SDO normal download request.65
Table 59 – Initiate SDO normal download response .66
Table 60 – SDO download request.66
Table 61 – SDO download response .66
Table 62 – Initiate SDO expedited upload request .67
Table 63 – Initiate SDO expedited upload response.67
Table 64 – Initiate SDO normal upload response .67
Table 65 – SDO upload request .68
Table 66 – SDO upload response .68
Table 67 – SDO abort request .68
Table 68 – SDO abort codes.68
Table 69 – Process data write request via MSC .69
Table 70 – Process data write request via CDC .70
Table 71 – Emergency request .70
Table 72 – Emergency error codes .70
Table 73 – Heartbeat request via MSC .71
Table 74 – Heartbeat request via CDC.71
Table 75 – Send frame request .72
Table 76 – Application layer management request .72
Table 77 – State transitions and management services.76
Table 78 – Primitives issued by ALSM to DLL .78
Table 79 – Primitives issued by DLL to ALSM .78
Table 80 – Primitives issued by FSPM to ALSM.78
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61158-6-22 © IEC:2010(E) – 5 –
Table 81 – Primitives issued by ALSM to FSPM.78
Table 82 – ALSM state table .79
Table 83 – Application layer states and communication services.80
Table 84 – Primitives issued by ALSM to DMPM .80
Table 85 – Primitives issued by DMPM to ALSM .82
Table 86 – Primitives issued by DMPM to DLL .84
Table 87 – Primitives issued by DLL to DMPM .85
Table 88 – ALSM to DLL mapping.86
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– 6 – 61158-6-22 © IEC:2010(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 6-22: Application layer protocol specification –
Type 22 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
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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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
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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 1 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 profile parts. Use of the various protocol Types in other
combinations may require permission of their respective intellectual-property-right holders.
International Standard IEC 61158-6-22 has been prepared by subcommittee 65C: Industrial
networks, of IEC technical committee 65: Industrial-process measurement, control and
automation.
This standard cancels and replaces IEC/PAS 61158-6-22 published in 2009. This first edition
constitutes a technical revision.
---------------------- Page: 8 ----------------------
61158-6-22 © IEC:2010(E) – 7 –
The text of this standard is based on the following documents:
FDIS Report on voting
65C/607/FDIS 65C/621/RVD
Full information on the voting for the approval of this International 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 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 2 The revision of this standard will be synchronized with the other parts of the IEC 61158 series.
---------------------- Page: 9 ----------------------
– 8 – 61158-6-22 © 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/TR 61158-1.
The application protocol provides the application service by making use of the services
available from the data-link or other immediately lower 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 application entities (AEs) 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:
• as a guide for implementors and designers;
• for use in the testing and procurement of equipment;
• as part of an agreement for the admittance of systems into the open systems environment;
• 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.
---------------------- Page: 10 ----------------------
61158-6-22 © IEC:2010(E) – 9 –
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 6-22: Application layer protocol specification –
Type 22 elements
1 Scope
1.1 General
The Fieldbus Application Layer (FAL) provides user programs with a means to access the
fieldbus communication environment. In this respect, the FAL can be viewed as a “window
between corresponding application programs.”
This standard provides common elements for basic time-critical and non-time-critical
messaging communications between application programs in an automation environment and
material specific to Type 22 fieldbus. 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 behavior provided by the
different Types of the fieldbus Application Layer in terms of:
a) the abstract syntax defining the application layer protocol data units conveyed between
communicating application entities;
b) the transfer syntax defining the application layer protocol data units conveyed between
communicating application entities;
c) the application context state machine defining the application service behavior visible
between communicating application entities; and
d) the application relationship state machines defining the communication behavior visible
between communicating application entities.
The purpose of this standard is to define the protocol provided to:
a) define the wire-representation of the service primitives defined in IEC 61158-5-22:2010;
and
b) define the externally visible behavior associated with their transfer.
This standard specifies the protocol of the IEC fieldbus Application Layer, in conformance
with the OSI Basic Reference Model (ISO/IEC 7498) and the OSI Application Layer Structure
(ISO/IEC 9545).
FAL services and protocols are provided by FAL application-entities (AE) contained within the
application processes. The FAL AE is composed of a set of object-oriented Application
Service Elements (ASEs) and a Layer Management Entity (LME) that manages the AE. The
ASEs provide communication services that operate on a set of related application process
object (APO) classes. One of the FAL ASEs is a management ASE that provides a common
set of services for the management of the instances of FAL classes.
Although these services specify, from the perspective of applications, how request and
responses are issued and delivered, they do not include a specification of what the requesting
and responding applications are to do with them. That is, the behavioral aspects of the
---------------------- Page: 11 ----------------------
– 10 – 61158-6-22 © IEC:2010(E)
applications are not specified; only a definition of what requests and resp
...
IEC 61158-6-22
®
Edition 1.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –
Part 6-22: Application layer protocol specification – Type 22 elements
Réseaux de communication industriels – Spécifications de bus de terrain –
Partie 6-22: Spécification de protocoles de la couche application – Eléments
de Type 22
IEC 61158-6-22:2010
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2010 IEC, Geneva, Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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---------------------- Page: 2 ----------------------
IEC 61158-6-22
®
Edition 1.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks – Fieldbus specifications –
Part 6-22: Application layer protocol specification – Type 22 elements
Réseaux de communication industriels – Spécifications de bus de terrain –
Partie 6-22: Spécification de protocoles de la couche application – Eléments
de Type 22
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XC
CODE PRIX
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-83220-124-4
Warning! Make sure that you obtained this publication from an authorized distributor.
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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – 61158-6-22 IEC:2010
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
1.1 General . 9
1.2 Specifications . 10
1.3 Conformance . 10
2 Normative references . 10
3 Terms, definitions, abbreviations, symbols and conventions . 11
3.1 Terms and definitions from other ISO/IEC standards . 11
3.2 Fieldbus application-layer specific definitions . 11
3.3 Abbreviations and symbols . 15
3.4 Conventions . 17
4 Application layer protocol specification . 18
4.1 Operating principle . 18
4.2 Device reference models . 19
4.3 Application layer structure . 21
5 FAL syntax description . 21
5.1 Introduction and coding principles . 21
5.2 Data type encoding . 21
5.3 CeS encoding . 25
5.4 ISO/IEC 8802-3 DLPDU communication inside Type 22 RTFL . 72
5.5 Management encoding . 72
6 FAL protocol state machines . 73
6.1 Overview . 73
6.2 Fieldbus service protocol machine (FSPM) . 74
6.3 Application relationship protocol machine (ARPM) . 74
6.4 DLL mapping protocol machine . 74
7 AP-context state machine . 75
8 FAL service protocol machine (FSPM) . 75
9 Application layer state machine (ALSM) . 75
9.1 Description . 75
9.2 States . 77
9.3 Primitive definitions . 78
9.4 State table . 79
9.5 AL-service forwarding depending on AL-state . 79
10 DLL mapping protocol machine (DMPM) . 80
10.1 Overview . 80
10.2 Primitives exchanged between ALSM and DMPM . 80
10.3 Primitives exchanged between DLL and DMPM . 84
10.4 ALSM to DLL mapping . 86
Bibliography . 88
Figure 1 – RTFL device reference model . 20
Figure 2 – RTFN device reference model . 21
Figure 3 – Encoding of TimeOfDay value . 22
---------------------- Page: 4 ----------------------
61158-6-22 IEC:2010 – 3 –
Figure 4 – Encoding of TimeDifference value . 23
Figure 5 – Object dictionary addressing schema . 26
Figure 6 – Relationships among protocol machines and adjacent layers . 73
Figure 7 – ALSM protocol machine . 74
Figure 8 – ALSM diagram . 76
Table 1 – PDU element definition . 18
Table 2 – Object definition . 18
Table 3 – Transfer syntax for bit sequences . 22
Table 4 – Transfer syntax for Integer data type . 24
Table 5 – Transfer syntax for Unsigned data type . 24
Table 6 – Object dictionary structure . 25
Table 7 – Object dictionary object type definitions . 26
Table 8 – Basic data type definitions . 27
Table 9 – Complex data type definition . 28
Table 10 – Communication section . 29
Table 11 – Device type . 31
Table 12 – Error register encoding . 31
Table 13 – Error register . 31
Table 14 – Object definition template . 32
Table 15 – Encoding of event log entries . 32
Table 16 – Event log . 33
Table 17 – Manufacturer device name . 33
Table 18 – Manufacturer HW version . 34
Table 19 – Manufacturer SW version . 34
Table 20 – CL configuration . 34
Table 21 – Time sync IRQ configuration encoding . 36
Table 22 – Time sync IRQ configuration . 36
Table 23 – Time sync IRQ state . 37
Table 24 – Store parameters read information . 38
Table 25 – Store parameters. 38
Table 26 – Restore parameters read information . 39
Table 27 – Restore default parameters . 39
Table 28 – Diagnostic information . 41
Table 29 – Diagnostic threshold . 44
Table 30 – IP address EMCY . 45
Table 31 – Inhibit time EMCY. 46
Table 32 – Encoding of consumer heartbeat entries . 46
Table 33 – Consumer heartbeat list . 47
Table 34 – Producer heartbeat parameter . 47
Table 35 – Identity object . 49
Table 36 – SDO protocol timeout . 51
Table 37 – Enable client SDO parameter . 51
---------------------- Page: 5 ----------------------
– 4 – 61158-6-22 IEC:2010
Table 38 – Enable EMCY . 52
Table 39 – PDO timeout tolerance . 52
Table 40 – Store EDS . 52
Table 41 – Storage format . 53
Table 42 – OS command . 53
Table 43 – OS command mode . 54
Table 44 – OS debugger interface . 55
Table 45 – OS prompt . 56
Table 46 – Module list . 57
Table 47 – Emergency subscriber encoding . 57
Table 48 – Emergency subscriber . 57
Table 49 – Client SDO parameter encoding . 58
Table 50 – Client SDO parameter . 58
Table 51 – Receive PDO communication parameter . 59
Table 52 – Transmit PDO communication parameter . 61
Table 53 – Mapping format . 63
Table 54 – Receive PDO mapping parameter. 63
Table 55 – Transmit PDO mapping parameter . 64
Table 56 – Initiate SDO expedited download request . 65
Table 57 – Initiate SDO expedited download response . 65
Table 58 – Initiate SDO normal download request . 65
Table 59 – Initiate SDO normal download response . 66
Table 60 – SDO download request . 66
Table 61 – SDO download response . 66
Table 62 – Initiate SDO expedited upload request . 67
Table 63 – Initiate SDO expedited upload response . 67
Table 64 – Initiate SDO normal upload response . 67
Table 65 – SDO upload request . 68
Table 66 – SDO upload response . 68
Table 67 – SDO abort request . 68
Table 68 – SDO abort codes . 68
Table 69 – Process data write request via MSC . 69
Table 70 – Process data write request via CDC . 70
Table 71 – Emergency request . 70
Table 72 – Emergency error codes . 70
Table 73 – Heartbeat request via MSC . 71
Table 74 – Heartbeat request via CDC . 71
Table 75 – Send frame request . 72
Table 76 – Application layer management request . 72
Table 77 – State transitions and management services . 76
Table 78 – Primitives issued by ALSM to DLL . 78
Table 79 – Primitives issued by DLL to ALSM . 78
Table 80 – Primitives issued by FSPM to ALSM . 78
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61158-6-22 IEC:2010 – 5 –
Table 81 – Primitives issued by ALSM to FSPM . 78
Table 82 – ALSM state table . 79
Table 83 – Application layer states and communication services. 80
Table 84 – Primitives issued by ALSM to DMPM . 80
Table 85 – Primitives issued by DMPM to ALSM . 82
Table 86 – Primitives issued by DMPM to DLL . 84
Table 87 – Primitives issued by DLL to DMPM . 85
Table 88 – ALSM to DLL mapping . 86
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– 6 – 61158-6-22 IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 6-22: Application layer protocol specification –
Type 22 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.
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 1 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 profile parts. Use of the various protocol Types in other
combinations may require permission of their respective intellectual-property-right holders.
International Standard IEC 61158-6-22 has been prepared by subcommittee 65C: Industrial
networks, of IEC technical committee 65: Industrial-process measurement, control and
automation.
This standard cancels and replaces IEC/PAS 61158-6-22 published in 2009. This first edition
constitutes a technical revision.
---------------------- Page: 8 ----------------------
61158-6-22 IEC:2010 – 7 –
This bilingual version published in 2012-07 corresponds to the English version published in
2010-08.
The text of this standard is based on the following documents:
FDIS Report on voting
65C/607/FDIS 65C/621/RVD
Full information on the voting for the approval of this International 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 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 2 The revision of this standard will be synchronized with the other parts of the IEC 61158 series.
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– 8 – 61158-6-22 IEC:2010
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.
The application protocol provides the application service by making use of the services
available from the data-link or other immediately lower 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 application entities (AEs) 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:
• as a guide for implementors and designers;
• for use in the testing and procurement of equipment;
• as part of an agreement for the admittance of systems into the open systems environment;
• 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 combinatio
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