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IEC 61158-4-12-ed.4.0
Industrial communication networks - Fieldbus specifications - Part 4-12: Data-link layer protocol specification - Type 12 elements
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STANDARD published on 18.4.2019
The information about the standard:
Designation standards: IEC 61158-4-12-ed.4.0
Publication date standards: 18.4.2019
SKU: NS-947682
The number of pages: 142
Approximate weight : 457 g (1.01 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 61158-4-12-ed.4.0 :
IEC 61158-4-12:2019 specifies 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 and the structure of the fieldbus DLPDUs used for the transfer of data and control information by the protocol of this standard, and their representation as physical interface data units. This fourth edition cancels and replaces the third edition published in 2014 and constitutes a technical revision. The main changes are: technical corrections and editorial improvements for clarification. LIEC 61158-4-12:2019 la couche de liaison de donnees assure les communications de messagerie a contrainte de temps de base entre les appareils d’un environnement d’automatisation. Ce protocole offre des opportunites de communication a toutes les entites de liaison de donnees participantes a) de maniere cyclique et synchrone, et b) de maniere cyclique ou acyclique asynchrone, comme demande par chaque cycle de chacune de ces entites de liaison de donnees. Par consequent, ce protocole peut se caracteriser comme assurant un acces cyclique et acyclique asynchrone, mais avec un redemarrage synchrone de chaque cycle.
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