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ČSN EN IEC 61158-3-12-ed.4 (184020)
Industrial communication networks - Fieldbus specifications - Part 3-12: Data-link layer service definition - Type 12 elements
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STANDARD published on 1.12.2019
The information about the standard:
Designation standards: ČSN EN IEC 61158-3-12-ed.4
Classification mark: 184020
Catalog number: 508318
Publication date standards: 1.12.2019
SKU: NS-977003
The number of pages: 52
Approximate weight : 156 g (0.34 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
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Annotation of standard text ČSN EN IEC 61158-3-12-ed.4 (184020):
This part of IEC 61158 provides common elements for basic time-critical messaging communications between devices in an automation environment. 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 12 fieldbus data-link layer in terms of a) the primitive actions and events of the service; b) the parameters associated with each primitive action and event, and the form which they take; c) the interrelationship between these actions and events, and their valid sequences. The purpose of this document is to define the services provided to o the Type 12 fieldbus application layer at the boundary between the application and data-link layers of the fieldbus reference model; o systems management at the boundary between the data-link layer and systems ma-nagement of the fieldbus reference model
Preview of the standard ČSN EN IEC 61158-3-12-ed.4 (184020)
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