IEC 61158-3-3:2007
Industrial communication networks - Fieldbus specifications - Part 3-3: Data-link layer service definition - Type 3 elements
It 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. It includes the following significant changes with respect to the previous edition deletion of the former Type 6 fieldbus, and the placeholder for a Type 5 fieldbus data-link layer, for lack of market relevance; addition of new types of fieldbuses; division of this part into multiple parts numbered.
It 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. It includes the following significant changes with respect to the previous edition deletion of the former Type 6 fieldbus, and the placeholder for a Type 5 fieldbus data-link layer, for lack of market relevance; addition of new types of fieldbuses; division of this part into multiple parts numbered.
L'IEC 61158-3-3:2014 définit les services fournis à la couche application de bus de terrain Type 3 au niveau de la frontière entre les couches application et liaison de données du modèle de référence de bus de terrain et à la gestion des systèmes au niveau de la frontière entre la couche liaison de données et la gestion des systèmes selon le modèle de référence de bus de terrain. Cette deuxième édition annule et remplace la première édition parue en 2007. Cette édition constitue une révision technique. Les modifications sont: Modification de deux notes dans les définitions.
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