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IEC 61158-5-4-ed.4.0
Industrial communication networks - Fieldbus specifications - Part 5-4: Application layer service definition - Type 4 elements
Translate name
STANDARD published on 24.3.2023
The information about the standard:
Designation standards: IEC 61158-5-4-ed.4.0
Publication date standards: 24.3.2023
SKU: NS-1137768
Approximate weight : 300 g (0.66 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Industrial process measurement and controlApplication layerNetworking
Annotation of standard text IEC 61158-5-4-ed.4.0 :
IEC 61158-5-4:2023 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 4 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. LIEC 61158-5-4:2023 fournit des elements communs pour les communications prioritaires ou non entre des programmes d’application dans un environnement et avec un materiel d’automatisation specifiques aux bus de terrain de type 4. Le terme "prioritaire" signale l’existence d’une fenetre temporelle dans laquelle une ou plusieurs actions specifiees doivent etre realisees, avec un niveau de certitude defini. Si les actions specifiees ne sont pas realisees dans la fenetre temporelle, les applications demandant les actions risquent de connaitre une defaillance, avec les risques que cela comporte pour les equipements, les installations et eventuellement la vie humaine.
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