ISO 16484-5:2007

Building automation and control systems — Part 5: Data communication protocol

ISO 16484-5:2007 defines data communication services and protocols for computer equipment used for monitoring and control of heating, ventilation, air-conditioning and refrigeration (HVAC&R) and other building systems. It defines, in addition, an abstract, object-oriented representation of information communicated between such equipment, thereby facilitating the application and use of digital control technology in buildings. ISO 16484-5:2007 provides a comprehensive set of messages for conveying encoded binary, analog, and alphanumeric data between devices including, but not limited to hardware binary input and output values, hardware analog input and output values, software binary and analog values, text string values, schedule information, alarm and event information, files, and control logic.

Systèmes d'automatisation et de gestion technique du bâtiment — Partie 5: Protocole de communication de données

L'ISO 16484-5:2007 définit les protocoles et les services de communication de données de l'équipement de traitement de données, dans le cadre des fonctions de surveillance et de contrôle des systèmes de chauffage, de ventilation, de conditionnement d'air et de réfrigération (CVCR) et d'autres systèmes du bâtiment. Elle définit, en outre, une représentation abstraite, orientée objets, des informations communiquées entre ces équipements, en facilitant l'application et l'utilisation de la technologie du contrôle numérique dans les bâtiments. Le domaine et le champ d'application sont détaillés plus précisément à l'Article 2 de la publication ANSI/ASHRAE jointe.

General Information

• Status: Withdrawn
• Publication Date: 08-Mar-2007
• Withdrawal Date: 08-Mar-2007
• ICS: 35.240.67 - IT applications in building and construction industry
• ICS: 35.240.99 - IT applications in other fields
• ICS: 91.040.01 - Buildings in general
• Technical Committee: ISO/TC 205 - Building environment design
• Drafting Committee: ISO/TC 205/WG 3 - Building Automation and Control System (BACS) Design
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 03-Dec-2010

Relations

• Parent: ISO 16484-5:2007/Amd 1:2009 - Building automation and control systems — Part 5: Data communication protocol — Amendment 1
• Effective Date: 03-Jul-2008
• Revised: ISO 16484-5:2010 - Building automation and control systems — Part 5: Data communication protocol
• Effective Date: 17-Oct-2009
• Revises: ISO 16484-5:2003 - Building automation and control systems — Part 5: Data communication protocol
• Effective Date: 15-Apr-2008
• Amended By: ISO 16484-5:2007/Amd 1:2009 - Building automation and control systems — Part 5: Data communication protocol — Amendment 1
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 16484-5
Second edition
2007-03-15


Building automation and control
systems —
Part 5:
Data communication protocol
Systèmes d'automatisation et de gestion technique du bâtiment —
Partie 5: Protocole de communication de données




Reference number
ISO 16484-5:2007(E)
©
ISO 2007

---------------------- Page: 1 ----------------------
ISO 16484-5:2007(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.


©  ISO 2007
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 either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland

ii © ISO 2007 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 16484-5:2007(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16484-5 was prepared by the American Society of Heating, Refrigerating and Air-Conditioning Engineers
(ASHRAE) (as ANSI/ASHRAE 135-2004) and was adopted without modifications by Technical Committee
ISO/TC 205, Building environment design.
This second edition cancels and replaces the first edition (ISO 16484-5:2003), which has been technically
revised, as detailed in the enclosed ANSI/ASHRAE publication, pages 598 to 601.
ISO 16484 consists of the following parts, under the general title Building automation and control systems:
⎯ Part 1: Overview and definitions
⎯ Part 2: Hardware
⎯ Part 3: Functions
⎯ Part 5: Data communication protocol
⎯ Part 6: Data communication conformance testing
Applications and project implementation are to form the subjects of future parts 4 and 7.


© ISO 2007 – All rights reserved iii

---------------------- Page: 3 ----------------------
INTERNATIONAL STANDARD ISO 16484-5:2007(E)

Building automation and control systems —
Part 5:
Data communication protocol
1 Scope
This part of ISO 16484 defines data communication services and protocols for computer equipment used for
monitoring and control of heating, ventilation, air-conditioning and refrigeration (HVAC&R) and other building
systems. It defines, in addition, an abstract, object-oriented representation of information communicated
between such equipment, thereby facilitating the application and use of digital control technology in buildings.
The scope and field of application are furthermore detailed in Clause 2 of the enclosed ANSI/ASHRAE
publication.
2 Requirements
Requirements are the technical recommendations made in the following publication (reproduced on the
following pages), which is adopted as an International Standard:
ANSI/ASHRAE 135-2004, A Data Communication Protocol for Building Automation and Control
Networks
The text on the back of the title page of the ANSI/ASHRAE standard and the policy statement on the last page
are not relevant for the purposes of international standardization.
The following International Standards are cited in the text:
ISO/IEC 7498 (all parts), Information technology — Open Systems Interconnection — Basic Reference Model
ISO/TR 8509, Information processing systems — Open Systems Interconnection — Service conventions
ISO/IEC 8649, Information technology — Open Systems Interconnection — Service definition for the
Association Control Service Element
ISO/IEC 8802-2, Information technology — Telecommunications and information exchange between
systems — Local and metropolitan area networks — Specific requirements — Part 2: Logical link control
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 8824 (all parts), Information technology — Abstract Syntax Notation One (ASN.1)
ISO/IEC 8825 (all parts), Information technology — ASN.1 encoding rules
ISO/IEC 8859-1, Information technology — 8-bit single-byte coded graphic character sets — Part 1: Latin
alphabet No. 1
© ISO 2007 – All rights reserved 1

---------------------- Page: 4 ----------------------
ISO 16484-5:2007(E)
ISO/IEC 9545, Information technology — Open Systems Interconnection — Application Layer structure
ISO/IEC 10646, Information technology — Universal Multiple-Octet Coded Character Set (UCS)
3 Revision of ANSI/ASHRAE 135
It has been agreed with the American Society of Heating, Refrigerating and Air-Conditioning Engineers
(ASHRAE) that Technical Committee ISO/TC 205 will be consulted in the event of any revision or amendment
of ANSI/ASHRAE 135. To this end, ANSI will act as a liaison body between ASHRAE and ISO.


2 © ISO 2007 – All rights reserved

---------------------- Page: 5 ----------------------
ISO 16484-5:2007(E)
ANSI/ASHRAE Standard 135-2004
(Including ANSI/ASHRAE addenda listed in the History of Revisions)
®
ASHRAE
STANDARD

BACnet® —
A Data Communication
Protocol for Building
Automation and
Control Networks


Approved by the ASHRAE Standards Committee October 5,
2003; by the ASHRAE Board of Directors Jaunaru 29, 2004; and
by the American National Standards Institute February 25,
2004. See "History of Revisions" section for approval dates of
addenda.

This standard is under continuous maintenance by a Standing
Standard Project Committee (SSPC) for which the Standards
Committee has established a documented program for reqular
publication of addenda or revisions, including procdedures for
timely, documented, consensus action on requests for change
to any part of the standard. The change submittal form,
instructions and deadlines are given at the back of this
document and may be obtained in electronic form from
ASHRAE's Internet Home Page, http://www.ashrae.org, or in
paper form from the Manager of Standards. The latest edition
of an ASHRAE Standard and printed copies of a public review
draft may be purchased from ASHRAE Customer Service, 1791
Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail:
[e-mail]. Fax: [phone]. Telephone: 404-636-
8400 (worldwide), or toll free 1-800-527-4723 (for orders in U.S.
and Canada).



© 2004 American Society of Heating, Refrigerating and Air-
Conditioning Engineers, Inc.
ISSN 1041-2336






AMERICAN SOCIETY OF HEATING,
REFRIGERATING AND
AIR-CONDITIONING ENGINEERS, INC.
1791 Tullie Circle, NE · Atlanta GA 30329-2305
© ISO 2007 – All rights reserved 3

---------------------- Page: 6 ----------------------
ISO 16484-5:2007(E)
(Blank page)
4 © ISO 2007 – All rights reserved

---------------------- Page: 7 ----------------------
ISO 16484-5:2007(E)

ASHRAE STANDING STANDARD PROJECT COMMITTEE 135
Cognizant TC: TC 1.4, Control Theory and Applications
SPLS Liaison: Frank E. Jakob

Steven T. Bushby, Chair* Troy D. Cowan* Mark A. Railsback
William O. Swan III, Vice-Chair Daniel P. Giorgis David W. Robin
Carl Neilson, Secretary* Thomas S. Ertsgaard* Ernest L. Senior
Barry B. Bridges* Craig P. Gemmill* Daniel A. Traill*
James F. Butler* Robert L. Johnson J. Michael Whitcomb*
A. J. Capowski* Stephen T. Karg* David F. White
Keith A. Corbett J. Damian Ljungquist* Grant N. Wichenko
Jeffery Cosiol Jerald P. Martocci
*Denotes members of voting status when this standard was approved for publication.

The following persons served as consultants to the project committee:

Andrey Golovin H. Michael Newman David H. Ritter
David G. Holmberg René Quirighetti Takeji Toyoda
__________________________________________________________________________________________________________________

ASHRAE STANDARDS COMMITTEE 2003-2004
Van D. Baxter, Chair Matt R. Hargan Cyrus H. Nasseri
Davor Novosel, Vice-Chair Richard D. Hermans Gideon Shavit
Donald B. Bivens John F. Hogan David R. Tree
Dean S. Borges Frank E. Jakob Thomas H. Williams
Paul W. Cabot Stephen D. Kennedy James E. Woods
Charles W. Coward, Jr. David E. Knebel Kent W. Peterson, CO
Hugh F. Crowther Frederick H. Kohloss Ross D. Montgomery, BOD ExO
Brian P. Dougherty Merle F. McBride
Hakim Elmahdy Mark P. Modera
Claire B. Ramspeck, Manager of Standards
__________________________________________________________________________________________________________________
SPECIAL NOTE
This American National Standard (ANS) is a national voluntary consensus standard developed under the auspices of the American Society of Heating,
Refrigerating and Air-Conditioning Engineers (ASHRAE). Consensus is defined by the American National Standards Institute (ANSI), of which ASHRAE is a
member and which has approved this standard as an ANS, as "substantial agreement reached by directly and materially affected interest categories. This signifies
the concurrence of more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that an effort
be made toward their resolution." Compliance with this standard is voluntary until and unless a legal jurisdiction makes compliance mandatory through
legislation.

ASHRAE obtains consensus through participation of its national and international members, associated societies, and public review.

ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The Project Committee Chair and Vice-
Chair must be members of ASHRAE; while other members may or may not be members of ASHRAE, all must be technically qualified in the subject area of the
standard. Every effort is made to balance the concerned interests on all Project Committees.

The Manager of Standards of ASHRAE should be contacted for:
 a. interpretation of the contents of this Standard,
 b. participation in the next review of the Standard,
 c. offering constructive criticism for improving the Standard,
 d. permission to reprint portions of the Standard.
DISCLAIMER

ASHRAE uses its best efforts to promulgate standards for the benefit of the public in light of available information and accepted industry practices. However,
ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components, or systems tested, designed, installed, or operated in
accordance with ASHRAE's Standards or Guidelines or that any tests conducted under its standards will be nonhazardous or free from risk.

ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDS

ASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes, by
suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other information that
may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conformance to them is
completely voluntary.

In referring to this standard and marking of equipment and in advertising, no claim shall be made, either stated or implied, that the product has been approved
by ASHRAE.
© ISO 2007 – All rights reserved 5

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ISO 16484-5:2007(E)
(Blank page)
6 © ISO 2007 – All rights reserved

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ISO 16484-5:2007(E)

CONTENTS
FOREWORD ………………………………………………………………………………………………………………….vii
1 PURPOSE. 1
2 SCOPE. 1
3 DEFINITIONS. 1
3.1 Terms Adopted from International Standards. 1
3.2 Terms Defined for this Standard. 2
3.3 Abbreviations and Acronyms Used in this Standard. 5
4 BACnet PROTOCOL ARCHITECTURE . 8
4.1 The BACnet Collapsed Architecture. 9
4.2 BACnet Network Topology . 11
4.3 Security. 13
5 THE APPLICATION LAYER. 14
5.1 The Application Layer Model . 14
5.2 Segmentation of BACnet Messages. 18
5.3 Transmission of BACnet APDUs . 19
5.4 Application Protocol State Machines. 23
5.5 Application Protocol Time Sequence Diagrams. 37
5.6 Application Layer Service Conventions. 45
6 THE NETWORK LAYER. 47
6.1 Network Layer Service Specification . 47
6.2 Network Layer PDU Structure . 48
6.3 Messages for Multiple Recipients. 53
6.4 Network Layer Protocol Messages . 54
6.5 Network Layer Procedures. 56
6.6 BACnet Routers. 58
6.7 Point-To-Point Half-Routers . 63
7 DATA LINK/PHYSICAL LAYERS: ISO 8802-3 ("Ethernet") LAN. 68
7.1 The Use of ISO 8802-2 Logical Link Control (LLC) . 68
7.2 Parameters Required by the LLC Primitives . 68
7.3 Parameters Required by the MAC Primitives. 68
7.4 Physical Media . 68
8 DATA LINK/PHYSICAL LAYERS: ARCNET LAN. 70
8.1 The Use of ISO 8802-2 Logical Link Control (LLC) . 70
8.2 Parameters Required by the LLC Primitives . 70
8.3 Mapping the LLC Services to the ARCNET MAC Layer. 70
8.4 Parameters Required by the MAC Primitives. 70
8.5 Physical Media . 70
9 DATA LINK/PHYSICAL LAYERS: MASTER-SLAVE/TOKEN PASSING (MS/TP) LAN. 72
9.1 Service Specification . 72
9.2 Physical Layer . 74
9.3 MS/TP Frame Format . 76
9.4 Overview of the MS/TP Network. 77
9.5 MS/TP Medium Access Control. 78
9.6 Cyclic Redundancy Check (CRC) . 94
9.7 Interfacing MS/TP LANs with Other BACnet LANs . 95
9.8 Responding BACnet User Processing of Messages from MS/TP. 95
9.9 Repeaters. 95
10 DATA LINK/PHYSICAL LAYERS: POINT-TO-POINT (PTP). 97
10.1 Overview. 97
10.2 Service Specification . 97
10.3 Point-to-Point Frame Format. 102
10.4 PTP Medium Access Control Protocol . 104
11 DATA LINK/PHYSICAL LAYERS: EIA/CEA-709.1 ("LonTalk") LAN. 125
11.1 The Use of ISO 8802-2 Logical Link Control (LLC) . 125
11.2 Parameters Required by the LLC Primitives . 125
ASHRAE 135-2004 i

© ISO 2007 – All rights reserved 7

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ISO 16484-5:2007(E)
11.3 Mapping the LLC Services to the LonTalk Application Layer. 125
11.4 Parameters Required by the Application Layer Primitives. 125
11.5 Physical Media . 126
12 MODELING CONTROL DEVICES AS A COLLECTION OF OBJECTS. 127
12.1 Accumulator Object Type . 130
12.2 Analog Input Object Type. 138
12.3 Analog Output Object Type . 143
12.4 Analog Value Object Type. 148
12.5 Averaging Object Type. 153
12.6 Binary Input Object Type. 156
12.7 Binary Output Object Type . 161
12.8 Binary Value Object Type. 167
12.9 Calendar Object Type . 172
12.10 Command Object Type . 174
12.11 Device Object Type . 178
12.12 Event Enrollment Object Type . 185
12.13 File Object Type . 190
12.14 Group Object Type . 192
12.15 Life Safety Point Object Type . 194
12.16 Life Safety Zone Object Type . 200
12.17 Loop Object Type. 206
12.18 Multi-state Input Object Type . 213
12.19 Multi-state Output Object Type. 217
12.20 Multi-state Value Object Type . 221
12.21 Notification Class Object Type. 226
12.22 Program Object Type. 229
12.23 Pulse Converter Object Type. 234
12.24 Schedule Object Type . 241
12.25 Trend Log Object Type. 246
13 ALARM AND EVENT SERVICES. 252
13.1 Change of Value Reporting. 253
13.2 Intrinsic Reporting. 255
13.3 Algorithmic Change Reporting. 258
13.4 Alarm and Event Occurrence and Notification. 266
13.5 AcknowledgeAlarm Service. 269
13.6 ConfirmedCOVNotification Service. 271
13.7 UnconfirmedCOVNotification Service. 273
13.8 ConfirmedEventNotification Service. 274
13.9 UnconfirmedEventNotification Service . 277
13.10 GetAlarmSummary Service. 279
13.11 GetEnrollmentSummary Service . 281
13.12 GetEventInformation Service . 284
13.13 LifeSafetyOperation Service . 286
13.14 SubscribeCOV Service . 288
13.15 SubscribeCOVProperty Service . 290
14 FILE ACCESS SERVICES . 293
14.1 AtomicReadFile Service . 294
14.2 AtomicWriteFile Service. 297
15 OBJECT ACCESS SERVICES.
...

INTERNATIONAL ISO
STANDARD 16484-5
Second edition
2007-03-15

Building automation and control
systems —
Part 5:
Data communication protocol
Systèmes d'automatisation et de gestion technique du bâtiment —
Partie 5: Protocole de communication de données




Reference number
ISO 16484-5:2007(E)
©
ISO 2007

---------------------- Page: 1 ----------------------
ISO 16484-5:2007(E)


PDF disclaimer
PDF files may contain embedded typefaces. In accordance with Adobe's licensing policy, such files may be printed or viewed but shall
not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading a PDF file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create the PDF file(s) constituting this document can be found in the General Info relative to
the file(s); the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the files are suitable for
use by ISO member bodies. In the unlikely event that a problem relating to them is found, please inform the Central Secretariat at the
address given below.

This CD-ROM contains the publication ISO 16484-5:2007 in portable document format (PDF), which can be
viewed using Adobe® Acrobat® Reader.
Adobe and Acrobat are trademarks of Adobe Systems Incorporated.

This second edition cancels and replaces the first edition (ISO 16484-5:2003), which has been technically
revised.
©  ISO 2007
All rights reserved. Unless otherwise specified, no part of this CD-ROM may be reproduced, stored in a retrieval system or transmitted in
any form or by any means without prior permission from ISO. Requests for permission to reproduce this product should be addressed to
ISO copyright office • Case postale 56 • CH-1211 Geneva 20
...

INTERNATIONAL ISO
STANDARD 16484-5
Second edition
2007-03-15


Building automation and control
systems —
Part 5:
Data communication protocol
Systèmes d'automatisation et de gestion technique du bâtiment —
Partie 5: Protocole de communication de données




Reference number
ISO 16484-5:2007(E)
©
ISO 2007

---------------------- Page: 1 ----------------------
ISO 16484-5:2007(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.


©  ISO 2007
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 either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland

ii © ISO 2007 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 16484-5:2007(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16484-5 was prepared by the American Society of Heating, Refrigerating and Air-Conditioning Engineers
(ASHRAE) (as ANSI/ASHRAE 135-2004) and was adopted without modifications by Technical Committee
ISO/TC 205, Building environment design.
This second edition cancels and replaces the first edition (ISO 16484-5:2003), which has been technically
revised, as detailed in the enclosed ANSI/ASHRAE publication, pages 598 to 601.
ISO 16484 consists of the following parts, under the general title Building automation and control systems:
⎯ Part 1: Overview and definitions
⎯ Part 2: Hardware
⎯ Part 3: Functions
⎯ Part 5: Data communication protocol
⎯ Part 6: Data communication conformance testing
Applications and project implementation are to form the subjects of future parts 4 and 7.


© ISO 2007 – All rights reserved iii

---------------------- Page: 3 ----------------------
INTERNATIONAL STANDARD ISO 16484-5:2007(E)

Building automation and control systems —
Part 5:
Data communication protocol
1 Scope
This part of ISO 16484 defines data communication services and protocols for computer equipment used for
monitoring and control of heating, ventilation, air-conditioning and refrigeration (HVAC&R) and other building
systems. It defines, in addition, an abstract, object-oriented representation of information communicated
between such equipment, thereby facilitating the application and use of digital control technology in buildings.
The scope and field of application are furthermore detailed in Clause 2 of the enclosed ANSI/ASHRAE
publication.
2 Requirements
Requirements are the technical recommendations made in the following publication (reproduced on the
following pages), which is adopted as an International Standard:
ANSI/ASHRAE 135-2004, A Data Communication Protocol for Building Automation and Control
Networks
The text on the back of the title page of the ANSI/ASHRAE standard and the policy statement on the last page
are not relevant for the purposes of international standardization.
The following International Standards are cited in the text:
ISO/IEC 7498 (all parts), Information technology — Open Systems Interconnection — Basic Reference Model
ISO/TR 8509, Information processing systems — Open Systems Interconnection — Service conventions
ISO/IEC 8649, Information technology — Open Systems Interconnection — Service definition for the
Association Control Service Element
ISO/IEC 8802-2, Information technology — Telecommunications and information exchange between
systems — Local and metropolitan area networks — Specific requirements — Part 2: Logical link control
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 8824 (all parts), Information technology — Abstract Syntax Notation One (ASN.1)
ISO/IEC 8825 (all parts), Information technology — ASN.1 encoding rules
ISO/IEC 8859-1, Information technology — 8-bit single-byte coded graphic character sets — Part 1: Latin
alphabet No. 1
© ISO 2007 – All rights reserved 1

---------------------- Page: 4 ----------------------
ISO 16484-5:2007(E)
ISO/IEC 9545, Information technology — Open Systems Interconnection — Application Layer structure
ISO/IEC 10646, Information technology — Universal Multiple-Octet Coded Character Set (UCS)
3 Revision of ANSI/ASHRAE 135
It has been agreed with the American Society of Heating, Refrigerating and Air-Conditioning Engineers
(ASHRAE) that Technical Committee ISO/TC 205 will be consulted in the event of any revision or amendment
of ANSI/ASHRAE 135. To this end, ANSI will act as a liaison body between ASHRAE and ISO.


2 © ISO 2007 – All rights reserved

---------------------- Page: 5 ----------------------
ISO 16484-5:2007(E)
ANSI/ASHRAE Standard 135-2004
(Including ANSI/ASHRAE addenda listed in the History of Revisions)
®
ASHRAE
STANDARD

BACnet® —
A Data Communication
Protocol for Building
Automation and
Control Networks


Approved by the ASHRAE Standards Committee October 5,
2003; by the ASHRAE Board of Directors Jaunaru 29, 2004; and
by the American National Standards Institute February 25,
2004. See "History of Revisions" section for approval dates of
addenda.

This standard is under continuous maintenance by a Standing
Standard Project Committee (SSPC) for which the Standards
Committee has established a documented program for reqular
publication of addenda or revisions, including procdedures for
timely, documented, consensus action on requests for change
to any part of the standard. The change submittal form,
instructions and deadlines are given at the back of this
document and may be obtained in electronic form from
ASHRAE's Internet Home Page, http://www.ashrae.org, or in
paper form from the Manager of Standards. The latest edition
of an ASHRAE Standard and printed copies of a public review
draft may be purchased from ASHRAE Customer Service, 1791
Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail:
[e-mail]. Fax: [phone]. Telephone: 404-636-
8400 (worldwide), or toll free 1-800-527-4723 (for orders in U.S.
and Canada).



© 2004 American Society of Heating, Refrigerating and Air-
Conditioning Engineers, Inc.
ISSN 1041-2336






AMERICAN SOCIETY OF HEATING,
REFRIGERATING AND
AIR-CONDITIONING ENGINEERS, INC.
1791 Tullie Circle, NE · Atlanta GA 30329-2305
© ISO 2007 – All rights reserved 3

---------------------- Page: 6 ----------------------
ISO 16484-5:2007(E)
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4 © ISO 2007 – All rights reserved

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ISO 16484-5:2007(E)

ASHRAE STANDING STANDARD PROJECT COMMITTEE 135
Cognizant TC: TC 1.4, Control Theory and Applications
SPLS Liaison: Frank E. Jakob

Steven T. Bushby, Chair* Troy D. Cowan* Mark A. Railsback
William O. Swan III, Vice-Chair Daniel P. Giorgis David W. Robin
Carl Neilson, Secretary* Thomas S. Ertsgaard* Ernest L. Senior
Barry B. Bridges* Craig P. Gemmill* Daniel A. Traill*
James F. Butler* Robert L. Johnson J. Michael Whitcomb*
A. J. Capowski* Stephen T. Karg* David F. White
Keith A. Corbett J. Damian Ljungquist* Grant N. Wichenko
Jeffery Cosiol Jerald P. Martocci
*Denotes members of voting status when this standard was approved for publication.

The following persons served as consultants to the project committee:

Andrey Golovin H. Michael Newman David H. Ritter
David G. Holmberg René Quirighetti Takeji Toyoda
__________________________________________________________________________________________________________________

ASHRAE STANDARDS COMMITTEE 2003-2004
Van D. Baxter, Chair Matt R. Hargan Cyrus H. Nasseri
Davor Novosel, Vice-Chair Richard D. Hermans Gideon Shavit
Donald B. Bivens John F. Hogan David R. Tree
Dean S. Borges Frank E. Jakob Thomas H. Williams
Paul W. Cabot Stephen D. Kennedy James E. Woods
Charles W. Coward, Jr. David E. Knebel Kent W. Peterson, CO
Hugh F. Crowther Frederick H. Kohloss Ross D. Montgomery, BOD ExO
Brian P. Dougherty Merle F. McBride
Hakim Elmahdy Mark P. Modera
Claire B. Ramspeck, Manager of Standards
__________________________________________________________________________________________________________________
SPECIAL NOTE
This American National Standard (ANS) is a national voluntary consensus standard developed under the auspices of the American Society of Heating,
Refrigerating and Air-Conditioning Engineers (ASHRAE). Consensus is defined by the American National Standards Institute (ANSI), of which ASHRAE is a
member and which has approved this standard as an ANS, as "substantial agreement reached by directly and materially affected interest categories. This signifies
the concurrence of more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that an effort
be made toward their resolution." Compliance with this standard is voluntary until and unless a legal jurisdiction makes compliance mandatory through
legislation.

ASHRAE obtains consensus through participation of its national and international members, associated societies, and public review.

ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The Project Committee Chair and Vice-
Chair must be members of ASHRAE; while other members may or may not be members of ASHRAE, all must be technically qualified in the subject area of the
standard. Every effort is made to balance the concerned interests on all Project Committees.

The Manager of Standards of ASHRAE should be contacted for:
 a. interpretation of the contents of this Standard,
 b. participation in the next review of the Standard,
 c. offering constructive criticism for improving the Standard,
 d. permission to reprint portions of the Standard.
DISCLAIMER

ASHRAE uses its best efforts to promulgate standards for the benefit of the public in light of available information and accepted industry practices. However,
ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components, or systems tested, designed, installed, or operated in
accordance with ASHRAE's Standards or Guidelines or that any tests conducted under its standards will be nonhazardous or free from risk.

ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDS

ASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes, by
suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other information that
may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conformance to them is
completely voluntary.

In referring to this standard and marking of equipment and in advertising, no claim shall be made, either stated or implied, that the product has been approved
by ASHRAE.
© ISO 2007 – All rights reserved 5

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ISO 16484-5:2007(E)
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6 © ISO 2007 – All rights reserved

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ISO 16484-5:2007(E)

CONTENTS
FOREWORD ………………………………………………………………………………………………………………….vii
1 PURPOSE. 1
2 SCOPE. 1
3 DEFINITIONS. 1
3.1 Terms Adopted from International Standards. 1
3.2 Terms Defined for this Standard. 2
3.3 Abbreviations and Acronyms Used in this Standard. 5
4 BACnet PROTOCOL ARCHITECTURE . 8
4.1 The BACnet Collapsed Architecture. 9
4.2 BACnet Network Topology . 11
4.3 Security. 13
5 THE APPLICATION LAYER. 14
5.1 The Application Layer Model . 14
5.2 Segmentation of BACnet Messages. 18
5.3 Transmission of BACnet APDUs . 19
5.4 Application Protocol State Machines. 23
5.5 Application Protocol Time Sequence Diagrams. 37
5.6 Application Layer Service Conventions. 45
6 THE NETWORK LAYER. 47
6.1 Network Layer Service Specification . 47
6.2 Network Layer PDU Structure . 48
6.3 Messages for Multiple Recipients. 53
6.4 Network Layer Protocol Messages . 54
6.5 Network Layer Procedures. 56
6.6 BACnet Routers. 58
6.7 Point-To-Point Half-Routers . 63
7 DATA LINK/PHYSICAL LAYERS: ISO 8802-3 ("Ethernet") LAN. 68
7.1 The Use of ISO 8802-2 Logical Link Control (LLC) . 68
7.2 Parameters Required by the LLC Primitives . 68
7.3 Parameters Required by the MAC Primitives. 68
7.4 Physical Media . 68
8 DATA LINK/PHYSICAL LAYERS: ARCNET LAN. 70
8.1 The Use of ISO 8802-2 Logical Link Control (LLC) . 70
8.2 Parameters Required by the LLC Primitives . 70
8.3 Mapping the LLC Services to the ARCNET MAC Layer. 70
8.4 Parameters Required by the MAC Primitives. 70
8.5 Physical Media . 70
9 DATA LINK/PHYSICAL LAYERS: MASTER-SLAVE/TOKEN PASSING (MS/TP) LAN. 72
9.1 Service Specification . 72
9.2 Physical Layer . 74
9.3 MS/TP Frame Format . 76
9.4 Overview of the MS/TP Network. 77
9.5 MS/TP Medium Access Control. 78
9.6 Cyclic Redundancy Check (CRC) . 94
9.7 Interfacing MS/TP LANs with Other BACnet LANs . 95
9.8 Responding BACnet User Processing of Messages from MS/TP. 95
9.9 Repeaters. 95
10 DATA LINK/PHYSICAL LAYERS: POINT-TO-POINT (PTP). 97
10.1 Overview. 97
10.2 Service Specification . 97
10.3 Point-to-Point Frame Format. 102
10.4 PTP Medium Access Control Protocol . 104
11 DATA LINK/PHYSICAL LAYERS: EIA/CEA-709.1 ("LonTalk") LAN. 125
11.1 The Use of ISO 8802-2 Logical Link Control (LLC) . 125
11.2 Parameters Required by the LLC Primitives . 125
ASHRAE 135-2004 i

© ISO 2007 – All rights reserved 7

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ISO 16484-5:2007(E)
11.3 Mapping the LLC Services to the LonTalk Application Layer. 125
11.4 Parameters Required by the Application Layer Primitives. 125
11.5 Physical Media . 126
12 MODELING CONTROL DEVICES AS A COLLECTION OF OBJECTS. 127
12.1 Accumulator Object Type . 130
12.2 Analog Input Object Type. 138
12.3 Analog Output Object Type . 143
12.4 Analog Value Object Type. 148
12.5 Averaging Object Type. 153
12.6 Binary Input Object Type. 156
12.7 Binary Output Object Type . 161
12.8 Binary Value Object Type. 167
12.9 Calendar Object Type . 172
12.10 Command Object Type . 174
12.11 Device Object Type . 178
12.12 Event Enrollment Object Type . 185
12.13 File Object Type . 190
12.14 Group Object Type . 192
12.15 Life Safety Point Object Type . 194
12.16 Life Safety Zone Object Type . 200
12.17 Loop Object Type. 206
12.18 Multi-state Input Object Type . 213
12.19 Multi-state Output Object Type. 217
12.20 Multi-state Value Object Type . 221
12.21 Notification Class Object Type. 226
12.22 Program Object Type. 229
12.23 Pulse Converter Object Type. 234
12.24 Schedule Object Type . 241
12.25 Trend Log Object Type. 246
13 ALARM AND EVENT SERVICES. 252
13.1 Change of Value Reporting. 253
13.2 Intrinsic Reporting. 255
13.3 Algorithmic Change Reporting. 258
13.4 Alarm and Event Occurrence and Notification. 266
13.5 AcknowledgeAlarm Service. 269
13.6 ConfirmedCOVNotification Service. 271
13.7 UnconfirmedCOVNotification Service. 273
13.8 ConfirmedEventNotification Service. 274
13.9 UnconfirmedEventNotification Service . 277
13.10 GetAlarmSummary Service. 279
13.11 GetEnrollmentSummary Service . 281
13.12 GetEventInformation Service . 284
13.13 LifeSafetyOperation Service . 286
13.14 SubscribeCOV Service . 288
13.15 SubscribeCOVProperty Service . 290
14 FILE ACCESS SERVICES . 293
14.1 AtomicReadFile Service . 294
14.2 AtomicWriteFile Service. 297
15 OBJECT ACCESS SERVICES.
...

NORME ISO
INTERNATIONALE 16484-5
Deuxième édition
2007-03-15

Systèmes d'automatisation et de gestion
technique du bâtiment —
Partie 5:
Protocole de communication de données
Building automation and control systems —
Part 5: Data communication protocol




Numéro de référence
ISO 16484-5:2007(F)
©
ISO 2007

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ISO 16484-5:2007(F)
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ii © ISO 2007 – Tous droits réservés

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ISO 16484-5:2007(F)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux de
normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général confiée
aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du
comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI,
Partie 2.
La tâche principale des comités techniques est d'élaborer les Normes internationales. Les projets de Normes
internationales adoptés par les comités techniques sont soumis aux comités membres pour vote. Leur
publication comme Normes internationales requiert l'approbation de 75 % au moins des comités membres
votants.
L'attention est appelée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable de ne
pas avoir identifié de tels droits de propriété et averti de leur existence.
L’ISO 16484-5 a été préparée par l’American Society of Heating, Refrigerating and Air-Conditioning Engineers
(ASHRAE) (comme l’ANSI/ASHRAE 135-2004) et a été adoptée sans modifications par le comité technique
ISO/TC 205, Conception de l’environnement intérieur des bâtiments.
Cette deuxième édition annule et remplace la première édition (ISO 16484-5:2003), qui a fait l’objet d’une
révision technique comme indiqué dans la publication ANSI/ASHRAE jointe, pages 598 à 601.
L'ISO 16484 comprend les parties suivantes, présentées sous le titre général Systèmes d'automatisation et
de gestion technique du bâtiment :
⎯ Partie 1: Vue d’ensemble et définitions
⎯ Partie 2: Équipement
⎯ Partie 3: Fonctions
⎯ Partie 5: Protocole de communication de données
⎯ Partie 6: Essais de conformité de la communication de données
Les applications et la mise en œuvre de projets seront abordées dans les futures parties 4 et 7.
© ISO 2007 – Tous droits réservés iii

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NORME INTERNATIONALE ISO 16484-5:2007(F)

Systèmes d'automatisation et de gestion technique du
bâtiment —
Partie 5:
Protocole de communication de données
1 Domaine d'application
La présente partie de l’ISO 16484 définit les protocoles et les services de communication de données de
l’équipement de traitement de données, dans le cadre des fonctions de surveillance et de contrôle des
systèmes de chauffage, de ventilation, de conditionnement d’air et de réfrigération (CVCR) et d’autres
systèmes du bâtiment. Elle définit, en outre, une représentation abstraite, orientée objets, des informations
communiquées entre ces équipements, en facilitant l’application et l’utilisation de la technologie du contrôle
numérique dans les bâtiments. Le domaine et le champ d’application sont détaillés plus précisément à
l'Article 2 de la publication ANSI/ASHRAE jointe.
2 Exigences
Les exigences correspondent aux recommandations techniques indiquées dans la publication suivante
(reproduite aux pages suivantes), adoptée en tant que Norme internationale:
ANSI/ASHRAE 135-2004, A Data Communication Protocol for Building Automation and Control Networks
Le texte figurant au verso de la page de titre de la norme ANSI/ASHRAE et les instructions générales de la
dernière page ne sont pas applicables pour les besoins de normalisation internationale.
Les Normes internationales suivantes sont citées dans le texte:
ISO/CEI 7498 (toutes les parties), Technologies de l'information — Interconnexion de systèmes ouverts
(OSI) — Modèle de référence de base
ISO/TR 8509, Systèmes de traitement de l'information — Interconnexion de systèmes ouverts — Conventions
de service
ISO/CEI 8649, Technologies de l'information — Interconnexion de systèmes ouverts (OSI) — Définition de
service applicable à l'élément de service de contrôle d'association
ISO/CEI 8802-2, Technologies de l'information — Télécommunications et échange d'information entre
systèmes — Réseaux locaux et métropolitains — Exigences spécifiques — Partie 2:: Contrôle de liaison
logique
ISO/CEI 8802-3, Technologies de l'information — Télécommunications et échange d'information entre
systèmes — Réseaux locaux et métropolitains — Prescriptions spécifiques — Partie 3: Accès multiples par
surveillance du signal et détection de collision (CSMA/CD) et spécifications pour la couche physique
ISO/CEI 8824 (toutes les parties), Technologies de l'information — Notation de syntaxe abstraite numéro un
(ASN.1)
ISO/CEI 8825 (toutes les parties), Technologies de l'information — Règles de codage ASN.1
ISO/CEI 8859-1, Technologies de l'information — Jeux de caractères graphiques codés sur un seul octet —
Partie 1: Alphabet latin n° 1
© ISO 2007 – Tous droits réservés 1

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ISO 16484-5:2007(F)
ISO/CEI 9545, Technologies de l'information — Interconnexion de systèmes ouverts (OSI) — Structure de la
couche application
ISO/CEI 10646, Technologies de l'information — Jeu universel de caractères codés sur plusieurs octets
(JUC)
3 Révision de l’ANSI/ASHRAE 135
Il a été convenu avec l’American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)
que le comité technique ISO/TC 205 serait consulté en cas de révision ou d’amendement de l’ANSI/ASHRAE
135. À ces fins, l’ANSI agira en tant qu’organisme de liaison entre l’ASHRAE et l’ISO.
2 © ISO 2007 – Tous droits réservés

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ISO 16484-5:2007(F)

ANSI/ASHRAE Standard 135-2004
(Including ANSI/ASHRAE addenda listed in the History of
Revisions)

ASHRAE®
STANDARD
BACnet® —
A Data Communication
Protocol for Building
Automation and
Control Networks

Approved by the ASHRAE Standards Committee October 5,
2003; by the ASHRAE Board of Directors Jaunaru 29, 2004; and
by the American National Standards Institute February 25,
2004. See "History of Revisions" section for approval dates of
addenda.

This standard is under continuous maintenance by a Standing
Standard Project Committee (SSPC) for which the Standards
Committee has established a documented program for reqular
publication of addenda or revisions, including procdedures for
timely, documented, consensus action on requests for change
to any part of the standard. The change submittal form,
instructions and deadlines are given at the back of this
document and may be obtained in electronic form from
ASHRAE's Internet Home Page, http://www.ashrae.org, or in
paper form from the Manager of Standards. The latest edition
of an ASHRAE Standard and printed copies of a public review
draft may be purchased from ASHRAE Customer Service, 1791
Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail:
[e-mail]. Fax: [phone]. Telephone: 404-636-
8400 (worldwide), or toll free 1-800-527-4723 (for orders in U.S.
and Canada).


© 2004 American Society of Heating, Refrigerating and Air-
Conditioning Engineers, Inc.

ISSN 1041-2336



AMERICAN SOCIETY OF HEATING,

REFRIGERATING AND
AIR-CONDITIONING ENGINEERS, INC.
1791 Tullie Circle, NE · Atlanta GA 30329-2305

© ISO 2007 – Tous droits réservés 3

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ISO 16484-5:2007(F)
ASHRAE STANDING STANDARD PROJECT COMMITTEE 135
Cognizant TC: TC 1.4, Control Theory and Applications
SPLS Liaison: Frank E. Jakob
Steven T. Bushby, Chair* Troy D. Cowan* Mark A. Railsback
William O. Swan III, Vice-Chair Daniel P. Giorgis David W. Robin
Carl Neilson, Secretary* Thomas S. Ertsgaard* Ernest L. Senior
Barry B. Bridges* Craig P. Gemmill* Daniel A. Traill*
James F. Butler* Robert L. Johnson J. Michael Whitcomb*
A. J. Capowski* Stephen T. Karg* David F. White
Keith A. Corbett J. Damian Ljungquist* Grant N. Wichenko
Jeffery Cosiol Jerald P. Martocci
*Denotes members of voting status when this standard was approved for publication.
The following persons served as consultants to the project committee:
Andrey Golovin H. Michael Newman David H. Ritter
David G. Holmberg René Quirighetti Takeji Toyoda
ASHRAE STANDARDS COMMITTEE 2003-2004
Van D. Baxter, Chair Matt R. Hargan Cyrus H. Nasseri
Davor Novosel, Vice-Chair Richard D. Hermans Gideon Shavit
Donald B. Bivens John F. Hogan David R. Tree
Dean S. Borges Frank E. Jakob Thomas H. Williams
Paul W. Cabot Stephen D. Kennedy James E. Woods
Charles W. Coward, Jr David E. Knebel Kent W. Peterson, CO
Hugh F. Crowther Frederick H. Kohloss Ross D. Montgomery, BOD ExO
Brian P. Dougherty Merle F. McBride
Hakim Elmahdy Mark P. Modera
Claire B. Ramspeck, Manager of Standards
SPECIAL NOTE
This American National Standard (ANS) is a national voluntary consensus standard developed under the auspices of the American Society of Heating,
Refrigerating and Air-Conditioning Engineers (ASHRAE). Consensus is defined by the American National Standards Institute (ANSI), of which ASHRAE is a
member and which has approved this standard as an ANS, as "substantial agreement reached by directly and materially affected interest categories. This
signifies the concurrence of more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and
that an effort be made toward their resolution." Compliance with this standard is voluntary until and unless a legal jurisdiction makes compliance mandatory
through legislation.
ASHRAE obtains consensus through participation of its national and international members, associated societies, and public review.
ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The Project Committee Chair and
Vice-Chair must be members of ASHRAE; while other members may or may not be members of ASHRAE, all must be technically qualified in the subject area
of the standard. Every effort is made to balance the concerned interests on all Project Committees.
The Manager of Standards of ASHRAE should be contacted for:
a. interpretation of the contents of this Standard,
b. participation in the next review of the Standard,
c. offering constructive criticism for improving the Standard,
d. permission to reprint portions of the Standard.
DISCLAIMER
ASHRAE uses its best efforts to promulgate standards for the benefit of the public in light of available information and accepted industry practices. However,

ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components, or systems tested, designed, installed, or operated
in accordance with ASHRAE's Standards or Guidelines or that any tests conducted under its standards will be nonhazardous or free from risk.

ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDS
ASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes, by

suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other information that may
serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conformance to them is completely

voluntary.
In referring to this standard and marking of equipment and in advertising, no claim shall be made, either stated or implied, that the product has been

approved by ASHRAE.

4 © ISO 2007 – Tous droits réservés

---------------------- Page: 7 ----------------------
ISO 16484-5:2007(F)

(page blanche)
© ISO 2007 – Tous droits réservés 5

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ISO 16484-5:2007(F)
Sommaire Page
Avant-propos. 14
1 Objectif. 17
2 Domaine d’application . 17
3 Définitions . 17
3.1 Termes adoptés par les Normes internationales . 17
3.2 Termes définis pour la présente norme . 19
3.3    Abréviations et Acronymes utilisés dans la présente norme . 22
4 Architecture du protocole BACnet. 25
4.1 L’architecture réduite BACnet. 27
4.2 Topologie du réseau BACnet . 29
4.3 Sécurité. 30
5 La couche application . 31
5.1 Le modèle de couche application . 31
5.2 Segmentation des messages BACnet . 35
5.3 Transmission des APDU BACnet. 37
5.4 Machines à états de protocole d'application . 42
5.5 Diagrammes de séquence temporelle de protocole d'application . 58
5.6 Conventions de service de couche application . 66
6 La couche réseau. 67
6.1 Spécification de service de couche réseau . 68
6.2 Structure de PDU de la couche réseau .69
6.3 Messages pour destinataires multiples .74
6.4 Messages de protocole de couche réseau . 75
6.5 Procédures de la couche réseau. 78
6.6 Routeurs BACnet. 80
6.7 Demi-routeurs point à point. 86
7 Couches liaison de données/physique : ISO 8802-3 (Ethernet) LAN. 91
7.1 Utilisation de la procédure LLC ISO 8802-2 . 91
7.2 Paramètres requis par les primitives LLC.91
7.3 Paramètres requis par les primitives MAC . 91
7.4 Supports physiques . 91
8 Couches liaison de données/physique : LAN ARCNET. 92
8.1 Utilisation de la procédure LLC ISO 8802-2 . 92
8.2 Paramètres requis par les primitives LLC.93
8.3 Mappage des services LLC sur la couche MAC ARCNET. 93
8.4 Paramètres requis par les primitives MAC . 93
8.5 Supports physiques . 93
9 Couches liaison de données/physique : LAN Maître-esclave/passage de jeton (MS/TP). 94
9.1 Spécification de service. 95
9.2 Couche physique. 97
9.3 Format de trame MS/TP. 99
9.4 Vue d'ensemble du réseau MS/TP . 101
9.5 MAC MS/TP. 102
9.6 Contrôle de redondance cyclique (CRC). 120
6 © ISO 2007 – Tous droits réservés

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ISO 16484-5:2007(F)
9.7 Interfaçage des LAN MS/TP avec d'autres LAN BACnet.121
9.8 Réponse au traitement de messages utilisateur BACnet de MS/TP .121
9.9 Répéteurs .121
10 Couches liaison de données/Physique : Point à point (PTP) .123
10.1 Vue d'ensemble .123
10.2 Spécification de service.124
10.3 Format de trame point à point.129
10.4 Protocole MAC PTP.132
11 COUCHES LIAISON DE DONNÉES/PHYSIQUE : LAN EIA/CEA-709.1 (« LonTalk ») .155
11.1 Utilisation de la procédure LLC ISO 8802-2.155
11.2 Paramètres requis par les primitives LLC .155
11.3 Mappage des services LLC sur la couche application LonTalk.155
11.4 Paramètres requis par les primitives de la couche application .155
11.5 Supports physiques.156
12 MODÉLISATION DES DISPOSITIFS DE COMMANDE COMME UNE COLLECTION
D’OBJETS.157
12.1 Type d’objet Accumulator .160
12.2 Type d’objet Analog Input .170
12.3 Type d’objet Analog Output .176
12.4 Type d’objet Analog Value .182
12.5 Type d’objet Averaging.188
12.6 Type d’objet Binary Input .192
12.7 Type d’objet Binary Output .198
12.8 Type d’objet Binary Value .205
12.9 Type d’objet Calendar.211
12.10 Type d’objet Command.213
12.11 Type d’objet Device.217
12.12 Type d’objet Event Enrollment.225
12.13 Type d’objet File .230
12.14 Type d’objet Group.233
12.15 Type d’objet Life Safety Point .235
12.16 Type d’objet Life Safety Zone .243
12.17 Type d’objet Loop.251
12.18 Type d’objet Multi-state Input .258
12.19 Type d’objet Multi-state Output .263
12.20 Type d’objet Multi-state Value.268
12.21 Type d’objet Notification Class.274
12.22 Type d’objet Program.277
12.23 Type d’objet Pulse Converter.282
12.24 Type d’objet Schedule .290
12.25 Type d’objet Trend Log.296
13 SERVICES D’ALARME ET D’ÉVÉNEMENT.303
13.1 Rapport de changement de valeur .304
13.2 Rapport intrinsèque .306
13.3 Rapport de changement algorithmique .311
13.4 Occurrence et notification d’alarme et d’événement.320
13.5 Service AcknowledgeAlarm .323
13.6 Service ConfirmedCOVNotification.325
13.7 Service UnconfirmedCOVNotification.327
13.8 Service ConfirmedEventNotification.329
13.9 Service UnconfirmedEventNotification.332
13.10 Service GetAlarmSummary .335
13.11 Service GetEnrollmentSummary .337
13.12 Service GetEventInformation .340
13.13 Service LifeSafetyOperation .343
13.14 Service SubscribeCOV.345
13.15 Service SubscribeCOVProperty.347
© ISO 2007 – Tous droits réservés 7

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ISO 16484-5:2007(F)
14 SERVICES D’ACCÈS AUX FICHIERS. 350
14.1 Service AtomicReadFile. 351
14.2 Service AtomicWriteFile. 354
15 SERVICES D'ACCÈS AUX OBJETS . 357
15.1 Service AddListElement. 357
15.2 Service RemoveListElement. 359
15.3 Service CreateObject. 361
15.4 Service DeleteObject . 364
15.5 Servic
...

NORME ISO
INTERNATIONALE 16484-5
Deuxième édition
2007-03-15

Systèmes d'automatisation et de gestion
technique du bâtiment —
Partie 5:
Protocole de communication de données
Building automation and control systems —
Part 5: Data communication protocol




Numéro de référence
ISO 16484-5:2007(F)
©
ISO 2007

---------------------- Page: 1 ----------------------
ISO 16484-5:2007(F)

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