|
IEC 61158-4-3
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 4-3: Data-link layer protocol specification – Type 3 elements
your local IEC member National Committee for further information.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de
CH-1211 Geneva 20
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.
need further assistance, please contact the Customer Service
.
IEC 61158-4-3
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 4-3: Data-link layer protocol specification – Type 3 elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.20; 35.110 ISBN 978-2-8322-6773-8
– 2 – IEC 61158-4-3:2019 © IEC 2019
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
1.1 General . 10
1.2 Specifications . 10
1.3 Procedures . 10
1.4 Applicability . 10
1.5 Conformance . 11
2 Normative references . 11
3 Terms, definitions, symbols and abbreviations . 11
3.1 Reference model terms and definitions . 11
3.2 Service convention terms and definitions . 13
3.3 Common terms and definitions . 14
3.4 Additional Type 3 definitions . 16
3.5 Common symbols and abbreviations . 18
3.5.1 Data units . 18
3.5.2 Miscellaneous . 18
3.6 Type 3 symbols and abbreviations . 19
4 Common DL-protocol elements . 23
4.1 Frame check sequence . 23
4.1.1 General . 23
4.1.2 At the sending DLE . 24
4.1.3 At the receiving DLE . 25
5 Overview of the DL-protocol . 26
5.1 General . 26
5.2 Overview of the medium access control and transmission protocol . 26
5.3 Transmission modes and DL-entity . 27
5.3.1 Overview . 27
5.3.2 Token procedures . 28
5.3.3 Send or send/request mode . 32
5.4 Service assumed from the PhL . 32
5.4.1 Asynchronous transmission . 32
5.4.2 Synchronous transmission . 33
5.5 Operational elements . 36
5.5.1 Overview . 36
5.5.2 Bit time t . 36
BIT
5.5.3 Asynchronous transmission . 36
5.5.4 Synchronous transmission . 42
5.5.5 Timers and counters . 47
5.6 Cycle and system reaction times . 51
5.6.1 Asynchronous transmission . 51
5.6.2 Synchronous transmission . 53
6 General structure and encoding of DLPDUs, and related elements of procedure . 54
6.1 DLPDU granularity . 54
6.1.1 Asynchronous transmission – UART character . 54
6.1.2 Synchronous transmission . 55
6.2 Length octet (LE, LEr) . 55
6.3 Address octet . 56
6.3.1 Destination and source station address (DA and SA) . 56
6.3.2 Address extension (EXT) . 56
6.3.3 Address check . 57
6.3.4 DL-service-access-point (DLSAP) . 58
6.4 Control octet (FC) . 58
6.4.1 General . 58
6.4.2 Frame count bit . 60
6.5 DLPDU content error detection . 62
6.5.1 Asynchronous transmission – frame checksum (FCS) . 62
6.5.2 Synchronous transmission – frame check sequence (FCS) . 62
6.6 DATA_UNIT . 63
6.6.1 General . 63
6.6.2 Ident user data . 63
6.7 Error control procedures . 64
6.7.1 Asynchronous transmission . 64
6.7.2 Synchronous transmission . 64
7 DLPDU-specific structure, encoding and elements of procedure . 64
7.1 DLPDUs of fixed length with no data field . 64
7.1.1 Asynchronous transmission . 64
7.1.2 Synchronous transmission . 66
7.2 DLPDUs of fixed length with data field . 66
7.2.1 Asynchronous transmission . 66
7.2.2 Synchronous transmission . 67
7.3 DLPDUs with variable data field length . 68
7.3.1 Asynchronous transmission . 68
7.3.2 Synchronous transmission . 68
7.4 Token DLPDU . 69
7.4.1 Asynchronous transmission . 69
7.4.2 Synchronous transmission . 70
7.5 ASP DLPDU . 70
7.6 SYNCH DLPDU . 70
7.7 Time Event (TE) DLPDU . 70
7.8 Clock Value (CV) DLPDU . 70
7.9 Transmission procedures . 71
7.9.1 Asynchronous transmission . 71
7.9.2 Synchronous transmission . 72
8 Other DLE elements of procedure . 73
8.1 DL-entity initialization. 73
8.2 States of the media access control of the DL-entity . 74
8.2.1 General . 74
8.2.2 Offline . 75
8.2.3 Passive_Idle . 76
8.2.4 Listen_Token . 76
8.2.5 Active_Idle. 76
8.2.6 Claim_Token . 77
8.2.7 Wait_TCT . 77
– 4 – IEC 61158-4-3:2019 © IEC 2019
8.2.8 Use_Token . 78
8.2.9 Await_Data_Response . 78
8.2.10 Check_Access_Time .
...