ISO/FDIS 16484-2

Building automation and control systems (BACS) — Part 2: Hardware

ISO 16484-2:2004 specifies the requirements for the hardware to perform the tasks within a building automation and control system (BACS). It provides the terms, definitions and abbreviations for the understanding of ISO 16484-2 and ISO 16484-3. ISO 16484-2:2004 relates only to physical items/devices, i.e. devices for management functions, operator stations and other human system interface devices; controllers, automation stations and application specific controllers; field devices and their interfaces; cabling and interconnection of devices; engineering and commissioning tools. ISO 16484-2:2004 shows a generic system model to which all different types of BACS and their interconnections (BACS network) can fit. A graphical concept of the BACS network in terms of LAN topology will be provided in ISO 16484-5.

Systèmes d’automatisation et de contrôle des bâtiments (BACS) — Partie 2: Matériel

General Information

• Status: Not Published
• ICS: 35.240.67 - IT applications in building and construction industry
• ICS: 91.040.01 - Buildings in general
• Technical Committee: ISO/TC 205 - Building environment design
• Drafting Committee: ISO/TC 205 - Building environment design
• Current Stage: 5000 - FDIS registered for formal approval
• Start Date: 01-Apr-2024
• Completion Date: 04-Sep-2024

Relations

• Consolidates: ISO 21543:2020 - Milk and milk products — Guidelines for the application of near infrared spectrometry
• Effective Date: 28-Feb-2023
• Revises: ISO 16484-2:2004 - Building automation and control systems (BACS) — Part 2: Hardware
• Effective Date: 14-Jan-2023

Standards Content (Sample)

FINAL DRAFT
International
Standard
ISO/TC 205
Building automation and control
Secretariat: ANSI
systems (BACS) —
Voting begins on:
2024-10-24
Part 2:
Hardware
Voting terminates on:
2024-12-19
Systèmes d’automatisation et de contrôle des bâtiments
(BACS) —
Partie 2: Matériel
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 205
Building automation and control
Secretariat: ANSI
systems (BACS) —
Voting begins on:
Part 2:
Hardware
Voting terminates on:
Systèmes d’automatisation et de contrôle des bâtiments
(BACS) —
Partie 2: Matériel
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 6
5 BACS features catalogue . 7
5.1 BACS components .7
5.1.1 Hardware components .7
5.1.2 System configuration .7
5.1.3 Basic hardware performance criteria .7
5.2 Building management .8
5.2.1 General .8
5.2.2 Devices for data processing, storage and archiving .8
5.2.3 Management stations and operating units .9
5.2.4 Data interface unit (DIU) .9
5.3 Control devices .9
5.3.1 General .9
5.3.2 Edge device — Tasks.9
5.3.3 Automation station.10
5.4 Sensors and actuators .11
5.5 Local override/indication device — Task and use . 12
5.6 Room control device . 12
6 Topology . .12
6.1 Topology . 12
6.2 System communication . 12
6.2.1 General . 12
6.2.2 Cyber security . 13
6.2.3 Data security . 13
6.2.4 Human interaction . 13
6.2.5 Storage and analysis of data. 13
6.2.6 Cloud to cloud communication .14
6.2.7 Wireless networks .14
Bibliography .15

iii
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 205, Building environment design, in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 247,
Building Automation, Controls and Building Management, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 16484-2:2004), which has been technically
revised.
A list of all parts in the ISO 16484 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
FINAL DRAFT International Standard ISO/FDIS 16484-2:2024(en)
Building automation and control systems (BACS) —
Part 2:
Hardware
1 Scope
This document specifies the hardware requirements needed to carry out building automation tasks.
This document is applicable to physical devices, i.e.:
— devices that require human interaction, such as management stations or operator panels;
— devices for data storage and analysis, such as edge or cloud servers;
— devices for control applications, such as automation stations;
— devices for physical quantities acquisition, such as sensors and actuators.
This document provides a generic system topology based on a building network infrastructure, which
includes both the devices inside the building envelope and those outside the building envelope.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
IEC 60529, Degrees of protection provided by enclosures (IP code)
IEC/TR 62443-3-1, Industrial communication networks — Network and system security — Part 3-1: Security
technologies for industrial automation and control systems
IEC 62443-3-3, Industrial communication networks — Network and system security — Part 3-3: System security
requirements and security levels
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
access control system
dedicated security system, that includes the automatic checking of access rights under organizational
measures, barrier and door control for buildings and rooms, and registration of events
3.2
alarm
warning given by the system either:

a) indicating the presence of a hazard to property, the environment, or to life
b) a condition detected by a device or controller regarded as abnormal, that implements a rule or logic
specifically designed to look for that condition, e.g. "frost alarm"
Note 1 to entry: An alarm can be an annunciation that is either audible, visual or both that alerts an operator to an
abnormal condition, which can require corrective action.
3.3
analogue input
part of
...

ISO/DIS FDIS 16484-2:2023(E)
ISO/TC 205
Date: 2023-11-29
Secretariat: ANSI
Date: 2024-10-10
Building automation and control systems (BACS) — —
Part 2:
Hardware
Systèmes d’automatisation et de contrôle des bâtiments (BACS) —
Partie 2: Matériel
FDIS stage
ISO/DIS FDIS 16484-2:2023(E2024(en)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved
ii
ISO/DISFDIS 16484-2:2023 (E2024(en)
Contents
Foreword . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 7
5 BACS features catalogue . 8
6 Topology . 14
Bibliography . 18

Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 7
5 BACS features catalogue . 7
5.1 BACS components . 7
5.1.1 Hardware components . 7
5.1.2 System configuration . 8
5.1.3 Basic hardware performance criteria . 8
5.2 Building Management . 9
5.2.1 General . 9
5.2.2 Devices for data processing, storage and archiving . 9
5.2.3 Management Stations and Operating Units . 9
5.2.4 Data interface unit . 10
5.3 Control devices . 10
5.3.1 General . 10
5.3.2 Edge Device. 10
5.3.3 Automation Station . 11
5.4 Sensors and Actuators . 12
5.4.1 General . 12
5.5 Local override/indication device . 13
5.5.1 Task and use . 13
5.6 Room control device . 13
6 Topology . 13
6.1 Topology . 13
6.2 System communication . 13
6.2.1 General . 13
6.2.2 Cyber security . 14
6.2.3 Data security . 14
6.2.4 Human Interaction . 14
6.2.5 Storage and Analysis of Data . 14
6.2.6 Cloud to cloud communication. 15
iii
ISO/DIS FDIS 16484-2:2023(E2024(en)
6.2.7 Wireless networks . 15

iv © ISO 2023 – All rights reserved
iv
ISO/DISFDIS 16484-2:2023 (E2024(en)
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.htmlwww.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 205, Building environment design, in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 247,
Building Automation, Controls and Building Management, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 16484-2:2004), which has been technically
revised.
A list of all parts in the ISO 16484 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
Field Code Changed
v
DRAFT INTERNATIONAL STANDARD
ISO/DIS 16484-2:2023(E)
Building automation and control systems (BACS) — —
Part 2:
Hardware
1 Scope
This document specifies the hardware requirements needed to carry out building automation tasks.
This document is applicable to physical devices, i.e.:
— — devices that require human interaction, e.g.such as management stations or operator panels;
— — devices for data storage and analysis, e.g.such as edge or cloud servers;
— — devices for control applications, e.g. such as automation stations;
— — devices for physical quantities acquisition, e.g. such as sensors and actuators.
This document includesprovides a generic system topology based on a building network infrastructure, which
includes both the devices inside the building envelope and those outside the building envelope.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
IEC 60529, Degrees of protection provided by enclosures (IP code)
IEC/TR 62443--3-1, Industrial communication networks — Network and system security — Part 3-1: Security
technologies for industrial automation and control systems
IEC 62443--3-3, Industrial communication networks — Network and system security — Part 3-3: System security
requirements and security levels

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://www.iso.org/obphttps://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/https://www.electropedia.org/
ISO/DIS FDIS 16484-2:2023(E2024(en)
3.1 3.1
access control system
dedicated security system, that includes the automatic checking of access rights under organizational
measures, barrier and door control for buildings and rooms, and registration of events
3.2 3.2
alarm
warning given by the system either:
a) indicating the presence of a hazard to property, the environment, or to life
b) a condition detected by a device or controller regarded as abnormal, that implements a rule or logic
specifically designed to look for that condition, e.g. "frost alarm"
Note 1 to entry: An alarm can be an annunciation that is either audible, visual or both that alerts an operator to an
abnormal condition, which can require corrective action.
3.3
3.3 analog
analogue input
AI
part of the hardware pertaining to a control device for measuring
3.4
3.4 analog
analogue output
AO
part of the hardware pertaining to a control device for positioning
3.33.5 3.5
application
set of user information processing requirements or functions that together form a logical unit supporting a
process
Note 1 to entry: A BACSbuilding automation and control system can support many different applications.
3.43.6 3.6
binary input
BI
hardware pertaining to control devices for state processing
Note 1 to entry: The function is also referred to as binary input state.
3.53.7 3.7
binary output
BO
hardware pertaining to control devices for switching
Note 1 to entry: The function is also referred to as output switching.
2 © ISO 2023 – All rights reserved
----------
...