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IEC 61158-4-21-ed.3.0
Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements
Translate name
STANDARD published on 28.3.2023
The information about the standard:
Designation standards: IEC 61158-4-21-ed.3.0
Publication date standards: 28.3.2023
SKU: NS-1137762
The number of pages: 224
Approximate weight : 703 g (1.55 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Industrial process measurement and controlData link layerNetworking
Annotation of standard text IEC 61158-4-21-ed.3.0 :
IEC 61158-4-21:2023 describes: procedures for the timely transfer of data and control information from one data link user entity to a peer user entity, and among the data link entities forming the distributed data link service provider; procedures for giving communication opportunities based on ISO/IEC/IEEE 8802-3 MAC, with provisions for nodes to be added or removed during normal operation; structure of the fieldbus data link protocol data units (DLPDUs) used for the transfer of data and control information by the protocol of this document, and their representation as physical interface data units. LIEC 61158-4-21:2023 decrit: des procedures de transfert en temps opportun de donnees et d’informations de commande d’une entite utilisateur de liaison de donnees a une entite utilisateur homologue ainsi qu’entre entites de liaison de donnees qui constituent le fournisseur de services distribues de la liaison; des procedures offrant des moyens de communication fondees sur la commande d’acces au support (MAC) de l’ISO/IEC/IEEE 8802-3, ainsi que des dispositions permettant d’ajouter et de retirer des nouds au cours du fonctionnement normal; la structure des unites de donnees de protocole de liaison de donnees (DLPDU) de bus de terrain utilisees pour le transfert des donnees et les informations de commande par le protocole objet du present document, ainsi que leur representation en tant qu’unites de donnees d’interface de couche physique.
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