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Normas BSI – AENOR
BS EN 61158-4-21:2012

BS EN 61158-4-21:2012

Industrial communication networks. Fieldbus specifications. Data-link layer protocol specification. Type 21 elements

2013-07-31 /Definitive
Equivalencias internacionales:

EN 61158-4-21:2012

IEC 61158-4-21:2010

Relación con otras normas BSI:

Reemplazada por: BS EN IEC 61158-4-21:2019

Reemplaza a: DD IEC/PAS 62573:2008

IEC 61158-4-21:2010 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 and procedures for giving communication opportunities based on standard ISO/IEC 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 standard, and their representation as physical interface data units. This standard cancels and replaces IEC/PAS 62573 published in 2008. This bilingual version published in 2012-01 corresponds to the English version published in 2010-08.
Automatic control systems, Industrial, Process control, CSMA/CD networks, Data transfer, Real-time systems, Data transmission, Local area networks, Data circuit-terminating equipment, Data processing, Computer networks
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