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BS EN IEC 61158-5-26:2023

BS EN IEC 61158-5-26:2023

$215.11

Industrial communication networks. Fieldbus specifications – Application layer service definition. Type 26 elements

Published By Publication Date Number of Pages
BSI 2023 122
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1.1 General The fieldbus application layer (FAL) provides user programs with a means to access the fieldbus communication environment. In this respect, the FAL can be viewed as a “window between corresponding application programs.” This part of IEC 61158 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. This International Standard defines in an abstract way the externally visible service provided by the Type 2 fieldbus application layer in terms of: a) an abstract model for defining application resources (objects) capable of being manipulated by users via the use of the FAL service, b) the primitive actions and events of the service; c) the parameters associated with each primitive action and event, and the form which they take; and d) the interrelationship between these actions and events, and their valid sequences. The purpose of this document is to define the services provided to: a) the FAL user at the boundary between the user and the application layer of the fieldbus reference model, and b) Systems Management at the boundary between the application layer and Systems Management of the fieldbus reference model. This document specifies the structure and services of the Type 2 fieldbus application layer, in conformance with the OSI Basic Reference Model (ISO/IEC 7498-1) and the OSI application layer structure (ISO/IEC 9545). FAL services and protocols are provided by FAL application-entities (AE) contained within the application processes. The FAL AE is composed of a set of object-oriented application service elements (ASEs) and a layer management entity (LME) that manages the AE. The ASEs provide communication services that operate on a set of related application process object (APO) classes. One of the FAL ASEs is a management ASE that provides a common set of services for the management of the instances of FAL classes. Although these services specify, from the perspective of applications, how request and responses are issued and delivered, they do not include a specification of what the requesting and responding applications are to do with them. That is, the behavioral aspects of the applications are not specified; only a definition of what requests and responses they can send/receive is specified. This permits greater flexibility to the 318 FAL users in standardizing such object behavior. In addition to these services, some supporting services are also defined in this document to provide access to the FAL to control certain aspects of its operation. 1.2 Specifications […] 1.3 Conformance […]

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
7 CONTENTS
10 FOREWORD
12 INTRODUCTION
13 1 Scope
1.1 General
14 1.2 Specifications
1.3 Conformance
2 Normative references
16 3 Terms, definitions, symbols, abbreviated terms and conventions
3.1 Terms and definitions from other ISO/IEC standards
3.1.1 Terms and definitions from ISO/IEC 74981
3.1.2 Terms and definitions from ISO/IEC 8822
3.1.3 Terms and definitions from ISO/IEC 9545
17 3.1.4 Terms and definitions from ISO/IEC 88241
3.2 Fieldbus application layer Type 26-specific definitions
23 3.3 Abbreviated terms and symbols
25 3.4 Conventions
3.4.1 Overview
3.4.2 General conventions
26 3.4.3 Conventions for class definitions
27 3.4.4 Conventions for service definitions
28 4 Concepts
5 Data type ASE
5.1 Overview
29 5.2 Formal definition of data type objects
5.2.1 Data type class definitions
30 5.2.2 Attributes
31 5.3 FAL defined data types
5.3.1 Fixed length types
37 5.3.2 String types
38 5.4 Data type ASE service specification
6 Communication model specification
6.1 General
6.2 Protocol stack for Type 26 fieldbus
39 6.3 Overview of Type 26 communication model
Figures
Figure 1 – Protocol stack for Type 26 fieldbus
40 6.4 Cyclic data communication service with Common-memory
6.4.1 Overview
Figure 2 – Unconfirmed Push-Publisher/Subscriber type interaction
Figure 3 – Unconfirmed/Confirmed Client/Server type interaction
41 6.4.2 Common–memory: allocation to each node
42 6.4.3 Data sharing among nodes with the CM
Figure 4 – Common memory allocation
43 Figure 5 – Data sharing with the CM
Figure 6 – Node #01 for reception only
44 6.4.4 CM data type
6.5 ASEs
6.5.1 Overview of Type 26 ASEs
Figure 7 – Node #01 without the CM
Figure 8 − Data sharing among nodes with and without CM3
45 6.5.2 Type 26 specific conventions for FAL service common parameters
Figure 9 – The structure of ASEs for Type 26 FAL
46 6.5.3 Cyclic-data ASE
49 Tables
Table 1 – Write service parameters
50 Table 2 – Send-CM service parameters
Table 3 – Read service parameters
51 Table 4 – Update memory service parameters
52 6.5.4 Message data ASE
Table 5 – Get- buffer service parameters
57 Figure 10 – Virtual-address-space for Byte block
Table 6 – Byte block read service parameters
58 Table 7 – Byte block write service parameters
59 Figure 11 – Virtual-address-space for Word block
Table 8 – Word block read service parameters
60 Table 9 – Word block write service parameters
61 Table 10 – Network parameter read service parameters
62 Table 11 – Extended network parameter read service parameters
63 Table 12 – Network parameter write service parameters
64 Table 13 – Extended network parameter write service parameters
65 Table 14 – Stop command service parameters
Table 15 – Operation command service parameters
66 Table 16 – profile read service parameters
68 Table 17 – Transparent message service parameters
69 Table 18 – Log data read service parameters
Table 19 – Log data items
74 Table 20 – Log data clear service parameters
75 Table 21 – Message return service parameters
76 Table 22 – Vendor specific message service parameters
77 Table 23 – Set remote node configuration parameter service parameters
Table 24 – Data elements and Node configuration parameters
78 Table 25 – Service parameters of Read remote participatingnode management information parameter service
79 Table 26 – Participating node management information parameters
80 Table 27 – Read remote node management information parameter service parameters
81 Table 28 – Node management information parameters
82 6.5.5 Load measurement ASE
Table 29 – Read remote node setting information parameter service parameters
Table 30 – Node setting information parameters
84 Table 31 – Start TK-holding-time measurement service parameters
85 Table 32 – Terminate TK-holding-time measurement service parameters
86 Table 33 – Token-holding-time measurement result
87 Table 34 – Start GP_Comm sender log service parameters
Table 35 – Terminate GP_Comm sender log service parameters
88 6.5.6 Network management ASE
Table 36 – GP_Comm sender log measurement result
92 Table 37 – Service parameters for Set configuration parameter
Table 38 – Configuration parameters
93 Table 39 – Read node management information parameter service parameters
Table 40 – Node management information parameters
94 Table 41 – Service parameters for Read participating node mgt. information parameter
95 Table 42 – Participating node management information parameters
Table 43 – Service parameters for Read network management information parameter
96 Table 44 – Network management information parameters
Table 45 – Service parameters for Read message sequencenumber management information
97 Table 46 – Read message sequence number management information parameters
Table 47 – Read node status service parameters
98 Table 48 – Read node status parameters
Table 49 – Upper layer operating condition matrix
99 Table 50 – Reset node service parameters
Table 51 – Set network address service parameters
100 Table 52 – Register service parameters
Table 53 – Event service parameters
101 Table 54 – Activate/Deactivate measurement service parameters
102 6.5.7 General purpose command server ASE
Table 55 – Get log data service parameters
105 6.5.8 AR ASE
Table 56 – Send command service parameters
106 Figure 12 – AR ASE internal architecture
109 Table 57 – CT send service parameters
111 Table 58 – MT send service parameters
112 Table 59 – CS send service parameters
113 Table 60 – Notify state change service parameters
114 Table 61 – Control measurement service parameters
115 Table 62 – DLSAP assignments
116 Figure 13 – Structure of IP address
117 Table 63 – DLS Primitives and parameters
118 6.5.9 FAL ASE summary
Table 64 – Lower layer T-profile and the required standards
Table 65 – Summary of FAL ASEs
121 Bibliography

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BS EN IEC 61158-5-26:2023
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