IEC 61158-5-26:2023
Collections
International IEC standards
Publication date
March 2023
Number of pages
116 p.
Reference
IEC 61158-5-26:2023
Print number
2
IEC 61158-5-26:2023
March 2023
International standard
Current
Industrial communication networks - Fieldbus specifications - Part 5-26: Application layer service definition - Type 26 elements
IEC 61158-5-26:2023 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 26 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 document defines in an abstract way the externally visible service provided by the Type26 fieldbus application layer in terms of:an abstract model for defining application resources (objects) capable of being manipulated by users via the use of the FAL service;the primitive actions and events of the service;the parameters associated with each primitive action and event, and the form which they take; andthe interrelationship between these actions and events, and their valid sequences.
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Sumary
Industrial communication networks - Fieldbus specifications - Part 5-26: Application layer service definition - Type 26 elements
IEC 61158-5-26:2023 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 26 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 document defines in an abstract way the externally visible service provided by the Type26 fieldbus application layer in terms of:
an abstract model for defining application resources (objects) capable of being manipulated by users via the use of the FAL service;
the primitive actions and events of the service;
the parameters associated with each primitive action and event, and the form which they take; and
the interrelationship between these actions and events, and their valid sequences.
IEC 61158-5-26:2023 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 26 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 document defines in an abstract way the externally visible service provided by the Type26 fieldbus application layer in terms of:
an abstract model for defining application resources (objects) capable of being manipulated by users via the use of the FAL service;
the primitive actions and events of the service;
the parameters associated with each primitive action and event, and the form which they take; and
the interrelationship between these actions and events, and their valid sequences.
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Replaced standards
(2)
IEC 61158-5-26:2019
April 2019
International standard
Cancelled
Industrial communication networks - Fieldbus specifications - Part 5-26: Application layer service definition - Type 26 elements
IEC 61158-5-26:2019 specifies the structure and services of the IEC fieldbus Application Layer, in conformance with the OSI Basic Reference Model (see ISO/IEC 7498-1) and the OSI Application Layer Structure (see 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.
IEC 61158-5-2:2019
April 2019
International standard
Cancelled
Industrial communication networks - Fieldbus specifications - Part 5-2: Application layer service definition - Type 2 elements
IEC 61158-5-2:2019 defines the services provided to the FAL user at the boundary between the user and the application layer of the fieldbus reference model, and Systems Management at the boundary between the application layer and Systems Management of the fieldbus reference model. This standard 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) This fourth edition cancels and replaces the third edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - addition of a data type in 5.3.2; - clarifications of Object management ASE in 6.2.1; - extensions of General ASE in 6.2.1.2.1; - extensions/clarifications of Identity ASE in 6.2.1.2.2; - update of Message Router ASE in 6.2.1.2.4; - extensions/clarifications of Time Sync ASE in 6.2.1.2.6; - updates of Parameter ASE in 6.2.1.2.7; - updates of FAL ASE service specification in 6.2.1.3; - extensions/clarifications of Connection manager ASE in 6.2.2; - extensions/clarifications of Connection ASE in 6.2.3; - extensions/clarifications of Application type in 6.3.1.4.5. - miscellaneous editorial corrections.
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