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IEC 62769-3
Edition 2.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Field device integration (FDI) –
Part 3: FDI Server
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IEC 62769-3
Edition 2.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Field device integration (FDI) –
Part 3: FDI Server
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.05 ISBN 978-2-8322-9389-8
– 2 – IEC 62769-3:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 5
INTRODUCTION . 2
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, abbreviated terms and acronyms conventions . 10
3.1 Terms and definitions . 10
3.2 Abbreviated terms and acronyms . 11
3.3 Conventions . 11
4 Overview . 11
5 Information Model . 12
5.1 General . 12
5.2 Online/Offline . 12
5.2.1 Overview . 12
5.2.2 Transfer to device . 13
5.2.3 Transfer from device . 13
5.3 Access privileges . 13
5.4 Private Parameters . 13
5.5 Locking . 14
5.6 EditContext . 15
5.6.1 Concept and usage model . 15
5.6.2 Services . 16
5.6.3 NodeIds . 16
5.6.4 Reading . 17
5.6.5 Writing . 17
5.6.6 Writing dominant and dependent Variables . 17
5.6.7 Actions (EDD METHODS) . 17
5.6.8 UIDs . 20
5.6.9 Synchronization . 20
5.7 Reading . 20
5.7.1 General . 20
5.7.2 Reading offline variables . 21
5.7.3 Reading online variables . 21
5.8 Writing . 22
5.8.1 General . 22
5.8.2 Write offline variables . 23
5.8.3 Writing online variables . 24
5.8.4 Writing to an EditContext . 26
5.9 Subscription . 27
5.9.1 General . 27
5.9.2 Subscription of offline variables . 27
5.9.3 Subscription of online variables . 28
5.10 Device topology . 30
5.10.1 General . 30
5.10.2 Connection Points . 30
5.10.3 Topology management . 31
5.10.4 Topology scanning . 34
5.10.5 Use of SCAN function . 35
5.10.6 Validation of defined topology . 35
5.11 User Interface Elements . 36
5.11.1 User Interface Descriptions. 36
5.11.2 User Interface Plug-ins . 37
5.12 Actions . 37
5.12.1 FDI Server – FDI Client interaction . 37
5.12.2 Action state machine . 40
5.12.3 Actions Proxies . 42
5.12.4 Actions, EDD Actions and Actions Proxies . 42
6 OPC UA services . 44
6.1 OPC UA profiles . 44
6.2 Service error information . 44
6.2.1 Overview . 44
6.2.2 OPC UA services and their response . 44
6.2.3 Mappings of EDDL response codes to OPC UA service response . 44
6.3 Parameter value update during write service request . 45
6.4 Localization . 46
6.5 Audit events . 46
7 Communication . 46
7.1 Notation . 46
7.2 General . 46
7.2.1 Concepts . 46
7.2.2 Terms . 49
7.3 Communication Service processing . 50
7.3.1 Communication Service invocation . 50
7.3.2 Analyze communication path . 50
7.3.3 Manage communication relations . 51
7.3.4 Communication service request mapping . 51
7.3.5 Communication service request propagation . 52
7.3.6 Communication error handling . 53
7.4 FDI Communication Server specific handling . 53
7.4.1 Discovery . 53
7.4.2 Information Model synchronization . 54
8 Parallel Execution within the FDI Server . 54
8.1 Motivation . 54
8.2 Internal structure of the EDD interpreter. 54
8.3 Rules for running an EDD entity . 55
Annex A (informative) FDI Server functional structure . 56
A.1 FDI functional elements . 56
A.2 FDI Server extension . 57
Annex B (informative) Access privileges and user roles . 59
B.1 User roles and usage case . 59
B.2 Private data usage . 60
Annex C (informative) Parallel execution within the FDI Server – Examples . 61
C.1 Simple example for a synchronous execution . 61
C.2 Example for a concurrent execution . 61
C.3 Deadlock detection in concurrent execution . 63
– 4 – IEC 62769-3:2021 RLV © IEC 2021
Figure 1 – FDI architecture diagram .
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