IEC 62541-5:2011

IEC 62541-5 ®
Edition 1.0 2011-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
OPC unified architecture –
Part 5: Information Model
Architecture unifiée OPC –
Partie 5: Modèle d’Information

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IEC 62541-5 ®
Edition 1.0 2011-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
OPC unified architecture –
Part 5: Information Model
Architecture unifiée OPC –
Partie 5: Modèle d’Information

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XE
ICS 25.040.40; 25.100.01 ISBN 978-2-88912-729-0

– 2 – 62541-5 © IEC:2011
CONTENTS
FOREWORD . 10
INTRODUCTION . 12
1 Scope . 13
2 Normative references . 13
3 Terms, definitions, abbreviations and conventions . 13
3.1 Terms and definitions . 13
3.2 Abbreviations . 13
3.3 Conventions for Node descriptions . 13
4 NodeIds and BrowseNames . 15
4.1 NodeIds . 15
4.2 BrowseNames . 15
5 Common Attributes . 16
5.1 General . 16
5.2 Objects . 16
5.3 Variables . 16
5.4 VariableTypes . 16
6 Standard ObjectTypes . 17
6.1 General . 17
6.2 BaseObjectType . 17
6.3 ObjectTypes for the server object . 17
6.3.1 ServerType . 17
6.3.2 ServerCapabilitiesType . 19
6.3.3 ServerDiagnosticsType . 20
6.3.4 SessionsDiagnosticsSummaryType . 21
6.3.5 SessionDiagnosticsObjectType . 22
6.3.6 VendorServerInfoType . 22
6.3.7 ServerRedundancyType . 22
6.3.8 TransparentRedundancyType . 23
6.3.9 NonTransparentRedundancyType . 23
6.4 ObjectTypes used as EventTypes . 24
6.4.1 General . 24
6.4.2 BaseEventType . 24
6.4.3 AuditEventType . 26
6.4.4 AuditSecurityEventType . 27
6.4.5 AuditChannelEventType . 27
6.4.6 AuditOpenSecureChannelEventType . 28
6.4.7 AuditSessionEventType . 28
6.4.8 AuditCreateSessionEventType . 29
6.4.9 AuditUrlMismatchEventType . 30
6.4.10 AuditActivateSessionEventType . 30
6.4.11 AuditCancelEventType . 30
6.4.12 AuditCertificateEventType . 31
6.4.13 AuditCertificateDataMismatchEventType . 31
6.4.14 AuditCertificateExpiredEventType. 32

62541-5 © IEC:2011 – 3 –
6.4.15 AuditCertificateInvalidEventType . 32
6.4.16 AuditCertificateUntrustedEventType . 32
6.4.17 AuditCertificateRevokedEventType . 33
6.4.18 AuditCertificateMismatchEventType. 33
6.4.19 AuditNodeManagementEventType . 33
6.4.20 AuditAddNodesEventType . 34
6.4.21 AuditDeleteNodesEventType . 34
6.4.22 AuditAddReferencesEventType . 34
6.4.23 AuditDeleteReferencesEventType . 35
6.4.24 AuditUpdateEventType . 35
6.4.25 AuditWriteUpdateEventType . 36
6.4.26 AuditHistoryUpdateEventType . 36
6.4.27 AuditUpdateMethodEventType. 37
6.4.28 SystemEventType . 37
6.4.29 DeviceFailureEventType . 37
6.4.30 BaseModelChangeEventType . 38
6.4.31 GeneralModelChangeEventType . 38
6.4.32 SemanticChangeEventType . 38
6.4.33 EventQueueOverflowEventType . 39
6.5 ModellingRuleType . 39
6.6 FolderType . 39
6.7 DataTypeEncodingType . 40
6.8 DataTypeSystemType . 40
6.9 AggregateFunctionType . 40
7 Standard VariableTypes . 41
7.1 General . 41
7.2 BaseVariableType . 41
7.3 PropertyType . 41
7.4 BaseDataVariableType . 41
7.5 ServerVendorCapabilityType . 42
7.6 DataTypeDictionaryType . 42
7.7 DataTypeDescriptionType . 43
7.8 ServerStatusType . 43
7.9 BuildInfoType . 43
7.10 ServerDiagnosticsSummaryType . 44
7.11 SamplingIntervalDiagnosticsArrayType . 44
7.12 SamplingIntervalDiagnosticsType . 45
7.13 SubscriptionDiagnosticsArrayType . 45
7.14 SubscriptionDiagnosticsType . 45
7.15 SessionDiagnosticsArrayType . 46
7.16 SessionDiagnosticsVariableType . 47
7.17 SessionSecurityDiagnosticsArrayType. 49
7.18 SessionSecurityDiagnosticsType . 49
8 Standard Objects and their Variables . 50
8.1 General . 50
8.2 Objects used to organise the AddressSpace structure . 50
8.2.1 Overview . 50
8.2.2 Root . 51
8.2.3 Views . 51

– 4 – 62541-5 © IEC:2011
8.2.4 Objects . 52
8.2.5 Types . 52
8.2.6 ObjectTypes . 53
8.2.7 VariableTypes . 53
8.2.8 ReferenceTypes . 54
8.2.9 DataTypes . 55
8.2.10 OPC Binary . 56
8.2.11 XML Schema . 57
8.2.12 EventTypes . 57
8.3 Server Object and its containing Objects . 58
8.3.1 General . 58
8.3.2 Server Object . 59
8.4 ModellingRule Objects . 60
8.4.1 ExposesItsArray . 60
8.4.2 Mandatory . 60
8.4.3 Optional . 60
9 Standard Methods . 61
10 Standard Views . 61
11 Standard ReferenceTypes . 61
11.1 References . 61
11.2 HierarchicalReferences . 61
11.3 NonHierarchicalReferences . 61
11.4 HasChild . 62
11.5 Aggregates . 62
11.6 Organizes . 62
11.7 HasComponent. 63
11.8 HasOrderedComponent . 63
11.9 HasProperty . 63
11.10 HasSubtype . 63
11.11 HasModellingRule . 64
11.12 HasTypeDefinition . 64
11.13 HasEncoding . 64
11.14 HasDescription . 64
11.15 HasEventSource . 65
11.16 HasNotifier . 65
11.17 GeneratesEvent . 65
11.18 AlwaysGeneratesEvent . 65
11.19 HasModelParent . 66
12 Standard DataTypes . 66
12.1 Overview . 66
12.2 DataTypes defined in Part 3 . 66
12.3 DataTypes defined in Part 4 . 70
12.4 BuildInfo . 71
12.5 RedundancySupport . 72
12.6 ServerState . 72
12.7 RedundantServerDataType . 73
12.8 SamplingIntervalDiagnosticsDataType. 73
12.9 ServerDiagnosticsSummaryDataType . 74

62541-5 © IEC:2011 – 5 –
12.10 ServerStatusDataType . 75
12.11 SessionDiagnosticsDataType . 75
12.12 SessionSecurityDiagnosticsDataType. 76
12.13 ServiceCounterDataType. 77
12.14 StatusResult . 77
12.15 SubscriptionDiagnosticsDataType . 78
12.16 ModelChangeStructureDataType . 79
12.17 SemanticChangeStructureDataType . 80
Annex A (informative) Design decisions when modelling the server information . 81
Annex B (normative) StateMachines . 84
Bibliography . 103

Figure 1 – Standard AddressSpace Structure . 50
Figure 2 – Views Organization . 51
Figure 3 – Objects Organization . 52
Figure 4 – ObjectTypes Organization . 53
Figure 5 – VariableTypes Organization . 54
Figure 6 – ReferenceType Definitions . 55
Figure 7 – DataTypes Organization . 56
Figure 8 – EventTypes Organization . 57
Figure 9 – Excerpt of Diagnostic Information of the Server . 59
Figure B.1 – Example of a simple state machine . 85
Figure B.2 – Example of a state machine having a sub-machine . 85
Figure B.3 – The StateMachine Information Model . 87
Figure B.4 – Example of an initial State in a sub-machine . 92
Figure B.5 – Example of a StateMachineType using inheritance . 98
Figure B.6 – Example of a StateMachineType with a SubStateMachine using
inheritance . 99
Figure B.7 – Example of a StateMachineType using containment. 100
Figure B.8 – Example of a state machine with transitions from sub-states . 101
Figure B.9 – Example of a StateMachineType having Transitions to SubStateMachines . 102

Table 1 – Examples of DataTypes . 14
Table 2 – Type Definition Table . 15
Table 3 – Common Node Attributes . 16
Table 4 – Common Object Attributes . 16
Table 5 – Common Variable Attributes . 16
Table 6 – Common VariableType Attributes . 17
Table 7 – BaseObjectType Definition . 17
Table 8 – ServerType Definition . 18
Table 9 – ServerCapabilitiesType Definition . 19
Table 10 – ServerDiagnosticsType Definition . 20
Table 11 – SessionsDiagnosticsSummaryType Definition . 21
Table 12 – SessionDiagnosticsObjectType Definition . 22

– 6 – 62541-5 © IEC:2011
Table 13 – VendorServerInfoType Definition . 22
Table 14 – ServerRedundancyType Definition . 23
Table 15 – TransparentRedundancyType Definition . 23
Table 16 – NonTransparentRedundancyType Definition . 23
Table 17 – BaseEventType Definition . 24
Table 18 – AuditEventType Definition . 26
Table 19 – AuditSecurityEventType Definition . 27
Table 20 – AuditChannelEventType Definition . 27
Table 21 – AuditOpenSecureChannelEventType Definition . 28
Table 22 – AuditSessionEventType Definition . 29
Table 23 – AuditCreateSessionEventType Definition . 29
Table 24 – AuditUrlMismatchEventType Definition . 30
Table 25 – AuditActivateSessionEventType Definition. 30
Table 26 – AuditCancelEventType Definition . 31
Table 27 – AuditCertificateEventType Definition . 31
Table 28 – AuditCertificateDataMismatchEventType Definition . 31
Table 29 – AuditCertificateExpiredEventType Definition . 32
Table 30 – AuditCertificateInvalidEventType Definition . 32
Table 31 – AuditCertificateUntrustedEventType Definition . 32
Table 32 – AuditCertificateRevokedEventType Definition . 33
Table 33 – AuditCertificateMismatchEventType Definition . 33
Table 34 – AuditNodeManagementEventType Definition . 33
Table 35 – AuditAddNodesEventType Definition . 34
Table 36 – AuditDeleteNodesEventType Definition . 34
Table 37 – AuditAddReferencesEventType Definition. 35
Table 38 – AuditDeleteReferencesEventType Definition . 35
Table 39 – AuditUpdateEventType Definition . 35
Table 40 – AuditWriteUpdateEventType Definition . 36
Table 41 – AuditHistoryUpdateEventType Definition . 36
Table 42 – AuditUpdateMethodEventType Definition . 37
Table 43 – SystemEventType Definition . 37
Table 44 – DeviceFailureEventType Definition . 38
Table 45 – BaseModelChangeEventType Definition . 38
Table 46 – GeneralModelChangeEventType Definition. 38
Table 47 – SemanticChangeEventType Definition . 39
Table 48 – EventQueueEventType Definition . 39
Table 49 – ModellingRuleType Definition . 39
Table 50 – FolderType Definition . 40
Table 51 – DataTypeEncodingType Definition . 40
Table 52 – DataTypeSystemType Definition . 40
Table 53 – AggregateFunctionType Definition . 40
Table 54 – BaseVariableType Definition . 41
Table 55 – PropertyType Definition . 41

62541-5 © IEC:2011 – 7 –
Table 56 – BaseDataVariableType Definition . 42
Table 57 – ServerVendorCapabilityType Definition . 42
Table 58 – DataTypeDictionaryType Definition . 42
Table 59 – DataTypeDescriptionType Definition . 43
Table 60 – ServerStatusType Definition . 43
Table 61 – BuildInfoType Definition . 44
Table 62 – ServerDiagnosticsSummaryType Definition . 44
Table 63 – SamplingIntervalDiagnosticsArrayType Definition . 45
Table 64 – SamplingIntervalDiagnosticsType Definition . 45
Table 65 – SubscriptionDiagnosticsArrayType Definition . 45
Table 66 – SubscriptionDiagnosticsType Definition . 46
Table 67 – SessionDiagnosticsArrayType Definition . 46
Table 68 – SessionDiagnosticsVariableType Definition . 48
Table 69 – SessionSecurityDiagnosticsArrayType Definition . 49
Table 70 – SessionSecurityDiagnosticsType Definition . 50
Table 71 – Root Definition . 51
Table 72 – Views Definition . 51
Table 73 – Objects Definition . 52
Table 74 – Types Definition . 52
Table 75 – ObjectTypes Definition . 53
Table 76 – VariableTypes Definition. 54
Table 77 – ReferenceTypes Definition . 55
Table 78 – DataTypes Definition . 56
Table 79 – OPC Binary Definition . 57
Table 80 – XML Schema Definition . 57
Table 81 – EventTypes Definition . 58
Table 82 – Server Definition . 60
Table 83 – ExposesItsArray Definition . 60
Table 84 – Mandatory Definition . 60
Table 85 – Optional Definition . 60
Table 86 – References ReferenceType . 61
Table 87 – HierarchicalReferences ReferenceType . 61
Table 88 – NonHierarchicalReferences ReferenceType . 62
Table 89 – HasChild ReferenceType . 62
Table 90 – Aggregates ReferenceType . 62
Table 91 – Organizes ReferenceType . 62
Table 92 – HasComponent ReferenceType . 63
Table 93 – HasOrderedComponent ReferenceType . 63
Table 94 – HasProperty ReferenceType. 63
Table 95 – HasSubtype ReferenceType . 63
Table 96 – HasModellingRule ReferenceType . 64
Table 97 – HasTypeDefinition ReferenceType . 64
Table 98 – HasEncoding ReferenceType . 64

– 8 – 62541-5 © IEC:2011
Table 99 – HasDescription ReferenceType . 64
Table 100 – HasEventSource ReferenceType . 65
Table 101 – HasNotifier ReferenceType . 65
Table 102 – GeneratesEvent ReferenceType . 65
Table 103 – AlwaysGeneratesEvent ReferenceType . 65
Table 104 – HasModelParent ReferenceType . 66
Table 105 – Part 3 DataType Definitions . 67
Table 106 – BaseDataType Definition . 68
Table 107 – Structure Definition . 68
Table 108 – Enumeration Definition . 69
Table 109 – ByteString Definition . 69
Table 110 – Number Definition . 69
Table 111 – Double Definition . 69
Table 112 – Integer Definition . 69
Table 113 – DateTime Definition . 70
Table 114 – String Definition . 70
Table 115 – UInteger Definition . 70
Table 116 – Image Definition . 70
Table 117 – Part 4 DataType Definitions . 71
Table 118 – UserIdentityToken Definition . 71
Table 119 – BuildInfo Structure . 72
Table 120 – BuildInfo Definition . 72
Table 121 – RedundancySupport Values . 72
Table 122 – RedundancySupport Definition . 72
Table 123 – ServerState Values . 73
Table 124 – ServerState Definition . 73
Table 125 – RedundantServerDataType Structure . 73
Table 126 – RedundantServerDataType Definition . 73
Table 127 – SamplingIntervalDiagnosticsDataType Structure . 74
Table 128 – SamplingIntervalDiagnosticsDataType Definition . 74
Table 129 – ServerDiagnosticsSummaryDataType Structure. 74
Table 130 – ServerDiagnosticsSummaryDataType Definition . 74
Table 131 – ServerStatusDataType Structure . 75
Table 132 – ServerStatusDataType Definition . 75
Table 133 – SessionDiagnosticsDataType Structure . 75
Table 134 – SessionDiagnosticsDataType Definition . 76
Table 135 – SessionSecurityDiagnosticsDataType Structure . 77
Table 136 – SessionSecurityDiagnosticsDataType Definition . 77
Table 137 – ServiceCounterDataType Structure . 77
Table 138 – ServiceCounterDataType Definition . 77
Table 139 – StatusResult Structure. 78
Table 140 – StatusResult Definition . 78
Table 141 – SubscriptionDiagnosticsDataType Structure . 79

62541-5 © IEC:2011 – 9 –
Table 142 – SubscriptionDiagnosticsDataType Definition . 79
Table 143 – ModelChangeStructureDataType Structure . 80
Table 144 – ModelChangeStructureDataType Definition . 80
Table 145 – SemanticChangeStructureDataType Structure . 80
Table 146 – SemanticChangeStructureDataType Definition . 80
Table B.1 – StateMachineType Definition. 88
Table B.2 – StateVariableType Definition . 88
Table B.3 – TransitionVariableType Definition. 89
Table B.4 – FiniteStateMachineType Definition . 90
Table B.5 – FiniteStateVariableType Definition . 91
Table B.6 – FiniteTransitionVariableType Definition . 91
Table B.7 – StateType Definition . 92
Table B.8 – InitialStateType Definition . 93
Table B.9 – TransitionType Definition . 93
Table B.10 – FromState ReferenceType . 93
Table B.11 – ToSta
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