ISO/IEC 18012-3:2025

Information technology - Home electronic system (HES) - Guidelines for product interoperability - Part 3: Lexicon

ISO/IEC 18012-3:2025 specifies a lexicon of objects for the interoperability domain (ID). This document specifies ID base objects and their associated properties and input/output event types (i.e. in the form of a list of ID sensor, actuator, and control objects), and object state actions, which can be used to define interoperable application models.

General Information

• Status: Published
• Publication Date: 10-Jul-2025
• ICS: 35.200 - Interface and interconnection equipment
• Technical Committee: ISO/IEC JTC 1/SC 25 - Interconnection of information technology equipment
• Drafting Committee: WG 1 - ISO/IEC JTC 1/SC 25/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 11-Jul-2025
• Completion Date: 05-Aug-2025

Overview

ISO/IEC 18012-3:2025 - "Information technology - Home electronic system (HES) - Guidelines for product interoperability - Part 3: Lexicon" defines a standardized lexicon of objects and actions for the Home Electronic System (HES) interoperability domain (ID). The standard specifies ID base objects, their properties, input/output event types (sensor, actuator, control objects), and object state actions to enable consistent, interoperable application models across HES devices and gateways.

Key topics and technical requirements

• HES lexicon of objects: A catalog of base objects (user, binding map, service, interface, remote) with associated properties and event types to describe sensors, actuators and control entities.
• Object state & actions: Standardized object state actions and event encodings to model behavior and transitions across devices.
• Data formats & memory/addressing conventions: Conformance clauses cover data formats, memory storage/access and address/data types for predictable implementations.
• Conformance requirements: Rules and criteria to ensure compliance when devices or software claim interoperability with the HES lexicon.
• Domain coverage: Object and property definitions across application domains including energy management, lighting, HVAC, security, audio/video, telecommunications, appliances, electric vehicles and more.
• Binding maps & operations: Logical and mathematical operations, conditioning and addressing tables used to map and transform values between objects and services.
• Interface modules: HAN and WAN interface object definitions, discovery, channel services and privacy/security/traffic considerations.
• Service objects & security: Foundational services such as identification, time, authorization/authentication, cryptographic services, and domain services (e.g., energy, UI, AI).
• Annex material: Normative and informative annexes with binding map service details, WAN interface specifications, authorization examples, semantic meaning guidance and a detailed lexicon.

Applications and practical value

• Enables consistent device descriptions so manufacturers and integrators can create interoperable HES devices, gateways and cloud services.
• Helps HES gateway and IoT platform developers map sensor/actuator data, implement routing/transform logic (binding maps), and ensure event semantics across HAN/WAN channels.
• Useful for system integrators, firmware and application developers, certification bodies and test labs to verify conformance to a common interoperability model.
• Facilitates energy management, smart lighting, HVAC control, security systems, appliance integration and EV charging interoperability.

Who should use this standard

• Device manufacturers (sensors, actuators, smart appliances)
• HES gateway and IoT platform developers
• Systems integrators and solution architects
• Certification labs and compliance testers
• Standards bodies and technical working groups

Related standards

• ISO/IEC 18012 series (HES guidelines)
• ISO/IEC 14543 family (HAN / home automation references cited in examples)

Keywords: ISO/IEC 18012-3:2025, HES lexicon, home electronic system interoperability, sensor actuator lexicon, HES gateway, binding map, HAN WAN interface, interoperable application models.

Standards Content (Sample)

ISO/IEC 18012-3
Edition 1.0 2025-07
INTERNATIONAL
STANDARD
Information technology - Home electronic system (HES) - Guidelines for product
interoperability -
Part 3: Lexicon
ICS 35.200  ISBN 978-2-8327-0554-4

ISO/IEC 18012-3: 2025-07(en)
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CONTENTS
FOREWORD. 13
INTRODUCTION . 15
0.1 Overview . 15
0.2 Relation to existing work . 15
0.3 Lexicon and event encoding . 16
1 Scope . 18
2 Normative references . 18
3 Terms, definitions, abbreviated terms and conventions . 18
3.1 Terms and definitions . 18
3.2 Abbreviated terms . 21
3.3 Conventions . 21
3.3.1 Data formats . 21
3.3.2 Memory storage and access types . 26
3.3.3 Address and data types . 27
4 Conformance requirements . 28
5 HES lexicon concepts, principles . 29
5.1 General . 29
5.2 Communicating “HES lexicon” on media . 29
6 Object concepts . 29
6.1 Overview of object concepts . 29
6.2 User object concepts . 31
6.3 Binding map object concepts . 32
6.4 Service object concepts. 32
6.5 Interface object concepts . 32
6.6 Remote object concepts . 32
7 Action concepts . 32
7.1 Overview . 32
7.2 Communicating “functional actions” on media . 33
8 Objects – Detailed HES lexicon . 33
9 User objects – Detailed HES lexicon . 33
9.1 User objects short form . 33
9.2 User object components . 34
9.3 Common objects and structures . 34
9.3.1 currentValue . 34
9.3.2 previousValue . 39
9.3.3 compareValue . 39
9.4 Application domains . 39
9.4.1 Current application domains . 39
9.4.2 Energy management domain . 41
9.4.3 Lighting domain . 41
9.4.4 Utility domain . 42
9.4.5 HVAC domain . 44
9.4.6 Convenience domain . 45
9.4.7 User interface domain . 46
9.4.8 Audio and video domain . 46
9.4.9 Telecommunications domain . 47
9.4.10 Security domain . 47
9.4.11 Appliance domain . 48
9.4.12 Common user interface domain . 48
9.4.13 Safety cluster domain . 49
9.4.14 Electric vehicle domain . 49
9.4.15 General domain . 50
10 Binding map objects – Detailed HES lexicon . 50
10.1 Overview . 50
10.2 Mathematical and logical operations . 51
10.3 Conditioning . 51
10.4 Adjustment . 52
10.5 Operation table . 52
10.6 Addressing table . 54
10.7 Binding map overall aspects . 55
10.8 Operation table and addressing table. 56
11 Service objects – Detailed HES lexicon . 60
11.1 Service module . 60
11.2 Services . 60
11.2.1 General . 60
11.2.2 Identification service (foundational) . 61
11.2.3 Time service (foundational) . 65
11.2.4 Authorization and authentication service (foundational) . 73
11.2.5 Cryptographic service (foundational) . 80
11.2.6 Common user interface service . 82
11.2.7 Cluster to cluster service . 82
11.2.8 Artificial intelligence service . 82
11.2.9 Energy management service . 82
11.2.10 Electrical energy measuring system service . 82
11.2.11 Web-based energy service . 82
11.2.12 Audio gateway service . 82
11.2.13 IGRS RA agent service . 82
12 Interface objects – Detailed HES lexicon . 83
12.1 General interface objects . 83
12.2 HAN interface objects . 83
12.2.1 General . 83
12.2.2 Overview . 83
12.2.3 HAN interface module discovery of HES gateway modules . 84
12.2.4 HAN interface module central operations . 85
12.2.5 HAN interface module attached network . 86
12.2.6 HAN interface module configuration mode . 87
12.2.7 HAN interface module privacy, security and safety . 88
12.2.8 HAN interface module example - ISO/IEC 14543-4-302 . 90
12.3 WAN interface objects and actions . 94
12.3.1 General . 94
12.3.2 WAN interface module discovery of HES gateway modules . 94
12.3.3 WAN interface module central operations . 95
12.3.4 WAN interface module attached network . 96
12.3.5 WAN interface module privacy, security, safety, and traffic . 97
12.3.6 WAN interface module overall WAN channel services . 99
12.3.7 WAN interface module channel service table . 99
12.3.8 WAN interface module privacy, security, safety, traffic for WAN channel . 101
13 Remote objects – detailed HES lexicon . 104
13.1 General . 104
13.2 Common objects and structures . 104
13.2.1 currentValue . 104
13.2.2 previousValue . 106
13.2.3 compareValue . 106
13.2.4 Other properties . 107
13.3 Remote object domains . 107
13.3.1 General . 107
13.3.2 Environmental domain . 108
13.3.3 Common area domain . 109
13.3.4 Indirect GHG domain . 109
14 Actions – Detailed HES lexicon . 110
Annex A (normative) Binding map service . 111
A.1 Overview . 111
A.2 Value operation . 114
A.2.1 General . 114
A.2.2 Mathematical and logical operations . 115
A.2.3 Table of operations . 117
A.2.4 Conditioning . 117
A.2.5 Adjustment . 117
A.2.6 Examples of using the “Value Operation” . 118
A.2.7 Address redirection . 119
A.2.8 Operation table . 121
Annex B (informative) Example of operation group . 126
Annex C (normative) WAN interface module . 129
C.1 WAN interface objects and actions . 129
C.2 WAN interface module objects . 129
C.3 WAN interface channel objects . 130
C.4 WAN communication with other HES gateway systems . 133
Annex D (informative) Authorization service examples . 135
D.1 Parent and kid authorization example . 135
D.2 Limit incoming packets example . 139
Annex E (normative) Semantic meaning . 143
E.1 Semantic meaning . 143
E.2 HAN message meaning conveyed by HAN lexicon specification . 143
E.3 HAN message meaning conveyed by generic HAN specification . 144
E.4 All interface modules and all network messages . 145
Annex F (normative) Detailed HES lexicon for user objects . 146
F.1 Detailed HES lexicon . 146
F.2 Energy management domain . 146
F.2.1 General . 146
F.2.2 Power buses . 146
F.2.3 Energy management domain summary . 148
F.2.4 Energy management domain power bus retrieval . 148
F.3 Lighting domain. 151
F.3.1 General . 151
F.3.2 Lighting domain summary . 151
F.3.3 Lighting domain digital actuator . 152
F.3.4 Lighting domain digital sensor . 154
F.3.5 Lighting domain analog actuator . 157
F.3.6 Lighting domain analog sensor . 159
F.4 Utility domain . 161
F.4.1 Utility domain summary . 161
F.4.2 Utility domain electrical AC power sensor . 164
F.4.3 Utility domain electrical DC power sensor . 166
F.4.4 Utility domain electrical AC current sensor . 170
F.4.5 Utility domain electrical DC current sensor . 173
F.4.6 Utility domain DC voltage sensor . 176
F.4.7 Utility domain electrical AC voltage sensor . 179
F.4.8 Utility domain electrical energy current sensor (cumulative) . 182
F.4.9 Utility domain electrical AC energy sensor (within time period) . 185
F.4.10 Utility domain electrical frequency sensor . 189
F.4.11 Utility domain AC power factor sensor . 192
F.4.12 Utility domain energy storage operation mode. 195
F.4.13 Utility domain energy storage remaining . 198
F.4.14 Utility domain electrical reactive power sensor . 201
F.4.15 Utility domain electrical apparent power sensor . 204
F.4.16 Utility domain electrical reactive energy sensor (cumulative) . 207
F.4.17 Utility domain electrical apparent energy sensor (cumulative) . 210
F.4.18 Utility domain harmonic distortion . 213
F.5 User interface domain . 216
F.5.1 User interface domain summary . 216
F.5.2 User interface digital sensor . 217
F.5.3 User interface string sensor. 219
F.5.4 User interface digital actuator . 223
F.5.5 User interface string actuator . 225
Bibliography . 228

Figure 1 – ISO/IEC 18012-3 within the core interoperability and HES gateway
standards . 17
Figure 2 – Types of objects in the HES gateway . 30
Figure 3 – Short form formats for objects in the HES lexicon . 31
Figure 4 – Short form formats for functional actions in the HES lexicon . 33
Figure 5 – Overview of user objects . 34
Figure 6 – Access direction of “in” (Sensor) . 37
Figure 7 – Access direction of “out” (Actuator) . 37
Figure 8 – Functionality of binding maps . 51
Figure 9 – Components within an operation group of a binding map . 52
Figure 10 – Components within the addressingTable . 54
Figure 11 – Overview of service . 60
Figure 12 – Time service block diagram . 66
Figure 13 – Overview of interface objects . 83
Figure 14 – ISO/IEC 14543-4-302 communications . 91
Figure 15 – HES gateway to ISO/IEC 14543-4-302 electrical storage system . 91
Figure 16 – Other controllers can use the ISO/IEC 14543-4-302 electrical storage
system . 92
Figure 17 – Access to WAN interface objects . 94
Figure 18 – Components within a channel of a WAN interface module . 100
Figure A.1 – Service module . 111
Figure A.2 – Binding map example (switch and light) . 112
Figure A.3 – Binding map controller setup . 112
Figure A.4 – Real time operation of binding map . 113
Figure A.5 – Functionality of binding map . 113
Figure A.6 – Object conversion . 114
Figure A.7 – Object conversion . 115
Figure A.8 – Authorization . 115
Figure A.9 – Multiple source and destination values . 115
Figure A.10 – Address redirection . 119
Figure A.11 – Address referencing in binding map . 120
Figure A.12 – Addressing referencing for clusters in binding map. 121
Figure A.13 – List of operation groups in a binding map . 122
Figure A.14 – Components within an operation group of a binding map . 122
Figure A.15 – Components within the addressingTable . 124
Figure B.1 – Inputs . 126
Figure B.2 – Source addressing . 126
Figure B.3 – Source object . 126
Figure B.4 – Goes above . 127
Figure B.5 – Pass through . 127
Figure B.6 – Outputs . 127
Figure B.7 – Destination addressing . 127
Figure B.8 – Destination object . 128
Figure B.9 – Light on . 128
Figure C.1 – Access to WAN interface objects . 129
Figure C.2 – Types of WAN interface objects . 129
Figure C.3 – WAN interface module objects . 130
Figure C.4 – Remote services through WAN interface module . 130
Figure C.5 – Example of remote servers through a WAN interface module . 131
Figure C.6 – Channel access through a WAN interface module . 131
Figure C.7 – Authorization and translation for each channel . 132
Figure C.8 – Settings of WAN interface module . 132
Figure C.9 – WAN interface channel objects . 133
Figure C.10 – Service originating from outside the HES gateway system . 133
Figure D.1 – Parent full control . 135
Figure D.2 – Kid partial control . 135
Figure D.3 – Authorization updates binding map . 136
Figure D.4 – Parent and kid data in the authorization tables. 137
Figure D.5 – Parent authorization example . 138
Figure D.6 – Kid authorization example . 139
Figure D.7 – Authorization updates HAN interface module . 140
Figure D.8 – Unlimited Incoming Packet Example . 141
Figure D.9 – Limited incoming packet example . 142
Figure E.1 – HAN with semantic specification . 144
Figure E.2 – HAN with generic HAN specification . 145
Figure F.1 – Device interaction to power buses . 146
Figure F.2 – List of power bus groups . 147
Figure F.3 – Components within a power bus group . 147
Figure F.4 – Electrical AC power sensor element model . 164
Figure F.5 – Electrical DC power sensor element model . 167
Figure F.6 – Electrical AC current sensor element model . 170
Figure F.7 – Electrical DC current sensor element model . 173
Figure F.8 – DC voltage sensor element model . 176
Figure F.9 – AC voltage sensor element model . 179
Figure F.10 – Electrical energy sensor element model (cumulative) . 182
Figure F.11 – Electrical energy sensor element model (within a time period) . 185
Figure F.12 – Electrical frequency sensor element model . 189
Figure F.13 – Power factor sensor element model . 192
Figure F.14 – Energy storage mode element model . 195
Figure F.15 – Energy storage remaining energy . 198
Figure F.16 – Electrical reactive power sensor element model . 201
Figure F.17 – Electrical apparent power sensor element model . 204
Figure F.18 – Electrical reactive energy sensor element model (cumulative) . 207
Figure F.19 – Electrical apparent energy sensor element model (cumulative) . 210
Figure F.20 – Total harmonic distortion . 213
Figure F.21 – Single button . 219
Figure F.22 – Row of buttons . 219
Figure F.23 – Row of buttons example . 220
Figure F.24 – Touch screen with virtual buttons . 220
Figure F.25 – Example for touch screen with virtual buttons . 220

Table 1 – Defined types of dataFormat . 21
Table 2 – Memory storage and access types (memoryType) . 27
Table 3 – dataPurpose (‘dp’) parameter. 28
Table 4 – addrPoint ('ap') . 28
Table 5 – storageType (‘st’) . 28
Table 6 – Pre-Market currentValue metaData . 34
Table 7 – Post-Market currentValue metaData . 38
Table 8 – currentValue interactiveData . 38
Table 9 – Pre-Market compareValue metaData . 39
Table 10 – Post-Market compareValue metaData . 39
Table 11 – Application domains . 40
Table 12 – Energy management domain summary . 41
Table 13 – Lighting domain summary . 42
Table 14 – Utility domain summary . 42
Table 15 – HVAC domain summary . 45
Table 16 – Convenience domain summary . 46
Table 17 – User interface domain summary . 46
Table 18 – Audio and video interface domain summary . 47
Table 19 – Telecommunications domain summary . 47
Table 20 – Security domain summary . 48
Table 21 – Appliance domain summary . 48
Table 22 – Common user interface domain summary . 49
Table 23 – Safety cluster domain summary . 49
Table 24 – Electric vehicle domain summary . 50
Table 25 – General domain summary . 50
Table 26 – Key operations and their parameters . 51
Table 27 – Basic conditioning . 52
Table 28 – Basic adjustment . 52
Table 29 – Inputs table . 53
Table 30 – Outputs table . 54
Table 31 – addressingTable components . 55
Table 32 – Object address . 55
Table 33 – bindingMap configurationData (memoryType = ‘pr’) . 55
Table 34 – Binding map operation table and addressing table . 57
Table 35 – Services . 61
Table 36 – Object address . 62
Table 37 – identification configurationData (memoryType = ‘pr’) . 62
Table 38 – Object address . 62
Table 39 – discovery operationData (memoryType = ‘op’) . 63
Table 40 – Object address . 63
Table 41 – centralOperations Data (memoryType = ‘ro’) . 64
Table 42 – centralOperations operationData (memoryType = ‘op’) . 64
Table 43 – centralOperations Data (memoryType = ‘sp’) . 64
Table 44 – centralOperations metaData (memoryType = ‘po’) . 65
Table 45 – Object address . 66
Table 46 – Pre-market realTime configurationData (memoryType = ‘ro’) . 67
Table 47 – Post-Market realTime configurationData (memoryType = ‘po’) . 68
Table 48 – realTime interactiveData (memoryType = ‘ra’) . 68
Table 49 – Object address . 68
Table 50 – Pre-Market localTimeZone configurationData (memoryType = ‘pr’) . 69
Table 51 – Post-Market localTimeZone configurationData (memoryType = ‘po’) . 70
Table 52 – localTimeZone interactiveData (memoryType = ‘ra’) . 70
Table 53 – Object address . 71
Table 54 – Pre-Market sourceOfTime configurationData (memoryType = ‘pr’) . 71
Table 55 – Post-Market sourceOfTime configurationData (memoryType = ‘po’) . 72
Table 56 – sourceOfTime interactiveData (memoryType = ‘ra’) . 72
Table 57 – Object address . 73
Table 58 – authClass configurationData (memoryType = ‘pr’) . 73
Table 59 – Object address . 74
Table 60 – Post-Market authClass configurationData (memoryType = ‘sp’) . 74
Table 61 – Object address . 74
Table 62 – Post-Market authIdentity configurationData (memoryType = ‘sp’) . 75
Table 63 – Object address . 75
Table 64 – Post-Market credentials configurationData (memoryType = ‘sp’) . 75
Table 65 – Object address . 76
Table 66 – Post-Market permissionGroup configurationData (memoryType = ‘sp’) . 76
Table 67 – Object address . 76
Table 68 – Post-Market permissionService configurationData (memoryType = ‘sp’) . 77
Table 69 – Authorization and authentication service . 78
Table 70 – Object address . 80
Table 71 – crypto configurationData (memoryType = ‘pr’) . 80
Table 72 – Object address . 81
Table 73 – Post-Market crypto configurationData (memoryType = ‘sp’). 81
Table 74 – Object address . 84
Table 75 – Pre-Market discovery configurationData (memoryType = ‘pr’) . 84
Table 76 – Post-Market discovery configurationData (memoryType = ‘po’) . 84
Table 77 – Discovery interactiveData (memoryType = ‘ra’) . 84
Table 78 – Object address . 85
Table 79 – Pre-Market centralOperations configurationData (memoryType = ‘pr’) . 85
Table 80 – Post-Market centralOperations configurationData (memoryType = ‘po’) . 85
Table 81 – centralOperations interactiveData (memoryType = ‘ra’) . 85
Table 82 – Object address . 86
Table 83 – Pre-Market attachedNetwork configurationData (memoryType = ‘pr’) . 86
Table 84 – Post-Market attachedNetwork configurationData (memoryType = ‘po’) . 87
Table 85 – attachedNetwork interactiveData (memoryType = ‘ra’) . 87
Table 86 – Object address . 87
Table 87 – Pre-Market attachedNetwork configurationData (memoryType = ‘pr’) . 87
Table 88 – Post-Market attachedNetwork configurationData (memoryType = ‘po’) . 88
Table 89 – attachedNetwork interactiveData (memoryType = ‘ra’) . 88
Table 90 – Object address . 88
Table 91 – Post-Market privacySecuritySafety configurationData (memoryType = ‘po’) . 89
Table 92 – privacySecuritySafety serviceData (memoryType = ‘op’) . 90
Table 93 – Translation between ISO/IEC 14543-4-302 and HES gateway ISO/IEC
18012-3 lexicon (partial list) .
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