IEC TS 61158-3:1999

TECHNICAL
IEC
SPECIFICATION
61158-3
First edition
1999-03
Digital data communications for
measurement and control –
Fieldbus for use in industrial control systems –
Part 3 :
Data Link Service Definition
Reference number
IEC 61158-3:1999(E)
Numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series.
Consolidated publications
Consolidated versions of some IEC publications including amendments are

available. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the
base publication, the base publication incorporating amendment 1 and the base

publication incorporating amendments 1 and 2.

Validity of this publication
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology.
Information relating to the date of the reconfirmation of the publication is available
in the IEC catalogue.
Information on the subjects under consideration and work in progress undertaken by
the technical committee which has prepared this publication, as well as the list of
publications issued, is to be found at the following IEC sources:
• IEC web site*
• Catalogue of IEC publications
Published yearly with regular updates
(On-line catalogue)*
• IEC Bulletin
Available both at the IEC web site* and as a printed periodical
Terminology, graphical and letter symbols
For general terminology, readers are referred to IEC 60050: International
Electrotechnical Vocabulary (IEV).
For graphical symbols, and letter symbols and signs approved by the IEC for
general use, readers are referred to publications IEC 60027: Letter symbols to be
used in electrical technology, IEC 60417: Graphical symbols for use on equipment.
Index, survey and compilation of the single sheets and IEC 60617: Graphical symbols
for diagrams.
* See web site address on title page.

TECHNICAL
IEC
SPECIFICATION
61158-3
First edition
1999-03
Digital data communications for
measurement and control –
Fieldbus for use in industrial control systems –
Part 3 :
Data Link Service Definition
 IEC 1999  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
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For price, see current catalogue

– 2 – 61158-3 © IEC:1999
Contents
Page
FOREWORD .12

INTRODUCTION . 11

Clause
1 Scope and object. 14

1.1 Specifications . 14
1.2 Conformance. 14
2 Normative references . 15
3 Definitions . 16
3.1 Reference model definitions. 16
3.2 Service convention definitions. 17
3.3 Data Link Service definitions. 18
4 Symbols and abbreviations . 22
5 Conventions . 23
5.1 General conventions . 23
5.2 Parameters. 23
5.3 Identifiers . 24
6 Overview of the Data Link Service. 25
6.1 Overview of DL-subnetwork structuring . 26
6.2 Overview of DL-naming (addressing) . 26
7 Types and classes of Data Link Service . 28
8 Quality of Service (QoS) attributes common to multiple types of Data Link Service . 28
8.1 DLL priority (dynamic QoS attribute). 29

8.2 DLL maximum confirm delay (dynamic QoS attribute). 29
8.3 DLPDU authentication (semi-static QoS attribute) . 30
8.4 DL-scheduling-policy (semi-static QoS attribute) . 31
8.5 DL-timeliness (dynamic DLCEP QoS attributes) . 31
9 Facilities of the DL(SAP)-address, queue and buffer management Data Link Service. 35
10 Model of the DL(SAP)-address, queue and buffer management Data Link Service . 35
11 Sequence of primitives at one DLSAP . 36
11.1 Constraints on sequence of primitives . 36

61158-3 © IEC:1999 – 3 –
Clause Page
12 DL(SAP)-address, queue and buffer management facilities . 37

12.1 Create . 38

12.2 Delete. 41

12.3 Bind. 4 2

12.4 Unbind. 48

12.5 Put . 48

12.6 Get . 50
13 Facilities of the connection-mode Data Link Service . 53
14 Model of the connection-mode Data Link Service . 54
14.1 DLCEP-identification. 55
14.2 Model of a peer DLC . 55
14.3 Model of a multi-peer DLC . 58
15 Quality of connection-mode service. 62
15.1 Determination of QoS for connection-mode service . 62
15.2 Definition of QoS parameters . 62
16 Sequence of primitives. 6 9
16.1 Concepts used to define the connection-mode DL-service . 69
16.2 Constraints on sequence of primitives . 69
17 Connection establishment phase. 80
17.1 Function . 80
17.2 Types of primitives and parameters. 80
17.3 Sequence of primitives. 85
18 Connection release phase. 87
18.1 Function . 87

18.2 Types of primitives and parameters. 87
18.3 Sequence of primitives when releasing an established DLC/DLCEP. 89
18.4 Sequence of primitives in a DLS-user rejection of a DLC / DLCEP
establishment attempt. 91
19 Data transfer phase . 94
19.1 Queue data transfer . 94
19.2 Buffer data transfer. 97
19.3 Reset. 99
19.4 Subscriber query.105
20 Facilities of the connectionless-mode Data Link Service.107

– 4 – 61158-3 © IEC:1999
Clause Page
21 Model of the connectionless-mode Data Link Service .108

21.1 Model of DL-connectionless-mode unitdata transmission.108

21.2 Model of DL-connectionless-mode unitdata exchange .108

22 Quality of connectionless-mode service.109

22.1 Determination of QoS for connectionless-mode service .109

22.2 Definition of QoS parameters .109

23 Sequence of primitives.11 1
23.1 Constraints on sequence of primitives .111
23.2 Relation of primitives at the end-points of connectionless service .111
23.3 Sequence of primitives at one DLSAP .112
24 Connectionless-mode functions.113
24.1 Data transfer.113
24.2 Data exchange.117
24.3 Listener query.124
25 Facilities and classes of the time and scheduling guidance Data Link Service.126
26 Model of the time and scheduling guidance Data Link Service .127
27 Quality of scheduling guidance service.127
28 Sequence of primitives at one DLE.127
28.1 Constraints on sequence of primitives .127
29 Scheduling guidance functions .129
29.1 DL-time .129
29.2 Compel service.130
29.3 Schedule sequence.133
29.4 Cancel schedule .137

29.5 Subset sequence .138
Annex A — DL-Management service definition (normative).141
A.1 Scope and inheritance .141
A.2 Facilities of the DL-management service.141
A.3 Model of the DL-management service.141
A.4 Constraints on sequence of primitives.141
A.5 Set .142
A.6 Get.143
A.7 Action.144
A.8 Event .145

61158-3 © IEC:1999 – 5 –
Figures
Page
Figure 1 — Relationship of IEC 61158-3 to other Fieldbus and OSI publications . 13

Figure 2 — Relationships of DLSAPs, DLCEPs, DLSAP-addresses, DLCEP-addresses
and group DL-addresses .
...