BS EN IEC 61158-4-21:2019 - Industrial communication networks. Fieldbus specifications. Data-link layer protocol specification. Type 21 elements
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BS EN IEC 61158-4-21:2019

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

Status : Current   Published : July 2019

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PDF

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HARDCOPY



IEC 61158-4-21:2019 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 second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. The main changes are:


•added Frame control Value, DLM function and DLL constants;


•changed NCM_RETRY_RNMS to NCM_CHECK_NET_INTEGRITY_REQ;


•updated DLM state table;


•miscellaneous editorial corrections.




Standard NumberBS EN IEC 61158-4-21:2019
TitleIndustrial communication networks. Fieldbus specifications. Data-link layer protocol specification. Type 21 elements
StatusCurrent
Publication Date03 July 2019
Normative References(Required to achieve compliance to this standard)ISO/IEC/IEEE 8802-3:2017, EN IEC 61158-3-21:2019, IEC 61158-3-21 Ed.2.0, ISO/IEC/IEEE 8802-3:2017/Amd 3:2017, BS EN IEC 61158-3-21:2019, ISO/IEC 7498-1, ISO/IEC 10731, ISO/IEC 7498-3
Informative References(Provided for Information)IETF RFC 768, ISO/IEC TR 8802?1, IEC 61588, IETF RFC 791, IEC 61158-6-21:2019, IETF RFC 793, IEC 61158-1 Ed.2.0, IEC 61918:2018, IEC 61784-2:2019, IEC 61158-5-21 Ed.2.0, IEC 61158-2:2014, BS EN IEC 61158-5-21:2019
ReplacesBS EN 61158-4-21:2012
International RelationshipsEN IEC 61158-4-21:2019,IEC 61158-4-21:2019
DescriptorsAutomatic control systems, Industrial, Data transfer, Local area networks, Real-time systems, Data processing, Process control, Data transmission, CSMA/CD networks, Data circuit-terminating equipment, Computer networks
ICS25.040.40
33.040.40
35.100.20
Title in FrenchRéseaux de communication industriels. Spécifications des bus de terrain Spécification du protocole de la couche de liaison de données. Eléments de Type 21
Title in GermanIndustrielle Kommunikationsnetze. Feldbusse Protokollspezifikation des Data Link Layer (Sicherungsschicht). Typ 21-Elemente
CommitteeGEL/65/3
ISBN978 0 539 04837 7
PublisherBSI
FormatA4
DeliveryYes
Pages114
File Size2.001 MB
Price£292.00


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