IEC 61158-5-2:2023
(Main)Industrial communication networks - Fieldbus specifications - Part 5-2: Application layer service definition - Type 2 elements
Industrial communication networks - Fieldbus specifications - Part 5-2: Application layer service definition - Type 2 elements
IEC 61158-5-2:2023 provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to Type 2 fieldbus. The term "time-critical" is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life.
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 5-2: Définition des services de la couche application - Éléments de type 2
L'IEC 61158-5-2:2023 fournit des éléments communs pour les communications prioritaires ou non entre des programmes d’application dans un environnement et avec un matériel d’automatisation spécifiques aux bus de terrain de type 2. Le terme "prioritaire" signale l’existence d’une fenêtre temporelle dans laquelle une ou plusieurs actions spécifiées doivent être réalisées, avec un niveau de certitude défini. La non-réalisation des actions spécifiées dans la fenêtre temporelle induit un risque de défaillance des applications qui demandent ces actions, avec les risques afférents pour l’équipement, les installations et éventuellement la vie humaine.
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IEC 61158-5-2 ®
Edition 5.0 2023-03
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 5-2: Application layer service definition – Type 2 elements
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IEC 61158-5-2 ®
Edition 5.0 2023-03
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 5-2: Application layer service definition – Type 2 elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-6569-7
– 2 – IEC 61158-5-2:2023 © IEC 2023
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
1.1 General . 9
1.2 Specifications . 10
1.3 Conformance . 10
2 Normative references . 10
3 Terms, definitions, symbols, abbreviated terms and conventions . 12
3.1 ISO/IEC 7498-1 terms . 13
3.2 ISO/IEC 8822 terms . 13
3.3 ISO/IEC 9545 terms . 13
3.4 ISO/IEC 8824-1 terms . 13
3.5 Type 2 fieldbus data-link layer terms . 13
3.6 Type 2 fieldbus application-layer specific definitions . 14
3.7 Type 2 abbreviated terms and symbols . 22
3.8 Conventions . 23
3.8.1 Overview . 23
3.8.2 General conventions . 23
3.8.3 Conventions for class definitions . 24
3.8.4 Conventions for service definitions . 25
4 Common concepts . 26
5 Data type ASE . 26
5.1 General . 26
5.2 Formal definition of data type objects . 26
5.3 FAL defined data types . 26
5.3.1 Fixed length types . 26
5.3.2 String types . 33
5.3.3 Structure types . 34
5.4 Data type ASE service specification . 37
6 Communication model specification . 37
6.1 Concepts . 37
6.1.1 General . 37
6.1.2 General concepts . 38
6.1.3 Relationships between ASEs . 38
6.1.4 Naming and addressing . 40
6.1.5 Data types . 41
6.1.6 Diagnostic connection points . 48
6.2 ASEs . 49
6.2.1 Object management ASE . 49
6.2.2 Connection manager ASE . 175
6.2.3 Connection ASE . 193
6.3 ARs . 207
6.3.1 Overview . 207
6.3.2 UCMM AR formal model . 218
6.3.3 Transport AR formal model . 220
6.3.4 AR ASE services . 230
6.4 Summary of FAL classes . 237
6.5 Permitted FAL services by AR type . 238
Bibliography . 240
Figure 1 – Overview of ASEs and object classes. 40
Figure 2 – Addressing format using MAC, class, instance and attribute IDs . 40
Figure 3 – Identity object state transition diagram . 67
Figure 4 – Explicit and Implicit Setting interaction . 70
Figure 5 – Static Assembly state transition diagram . 75
Figure 6 – Dynamic Assembly state transition diagram . 76
Figure 7 – Variable Assembly state transition diagram . 78
Figure 8 – Typical timing relationships for acknowledged data production . 89
Figure 9 – Example of a COS system with two acking devices . 89
Figure 10 – Message flow in COS connection – one Connection object, one consumer . 90
Figure 11 – Message flow in COS connection – multiple consumers . 90
Figure 12 – Path Reconfiguration in a ring topology . 103
Figure 13 – Doubly attached clocks in a PRP network . 104
Figure 14 – Type 2 Time Synchronization offset clock model . 106
Figure 15 – Type 2 Time Synchronization system with offset clock model . 106
Figure 16 – Type 2 time synchronization group startup sequence . 109
Figure 17 – Parameter object state transition diagram . 115
Figure 18 – Example of Find_Next_Object_Instance service . 141
Figure 19 – State Transition Diagram for Fragmentation Session . 172
Figure 20 – Transmission Trigger Timer behavior . 201
Figure 21 – Inactivity watchdog timer . 202
Figure 22 – Using tools for configuration . 202
Figure 23 – Production Inhibit Timer behavior . 203
Figure 24 – Context of transport services within the connection model . 210
Figure 25 – Application–to–application view of data transfer . 210
Figure 26 – Data flow diagram for a link producer . 211
Figure 27 – Data flow diagram for a link consumer . 212
Figure 28 – Triggers . 213
Figure 29 – Binding transport instances to the producer and consumer of a transport
connection that does not have a reverse data path . 214
Figure 30 – Binding transport instances to the producers and consumers of a transport
connection that does have a reverse data path . 214
Figure 31 – Binding transport instances to the producer and consumers of a multipoint
connection when the transport connection does not have a reverse data path . 215
Figure 32 – Binding transport instances to the producers and consumers of a multipoint
connection when the transport connection does have reverse data paths . 215
Table 1 – Valid IANA MIB printer codes for character set selection . 36
Table 2 – Common elements . 43
Table 3 – ST language elements . 44
Table 4 – Type conversion operations . 45
– 4 – IEC 61158-5-2:2023 © IEC 2023
Table 5 – Values of implementation-dependent parameters . 47
Table 6 – Extensions to IEC 61131-3:2003 . 47
Table 7 – Identity object state event matrix . 68
Table 8 – Static Assembly state event matrix . 76
Table 9 – Static Assembly instance attribute access . 76
Table 10 – Dynamic Assembly state event matrix . 77
Table 11 – Dynamic Assembly instance attribute access . 77
Table 12 – Variable Assembly state event matrix . 78
Table 13 –
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