IEC 61158-4-11 Ed. 3.0 b:2014

Current Revision
Industrial communication networks - Fieldbus specifications - Part 4-11: Data-link layer protocol specificationn - Type 11 elements

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Industrial communication networks - Fieldbus specifications - Part 4-11: Data-link layer protocol specificationn - Type 11 elements

PUBLISH DATE 2014
PAGES 334

Industrial communication networks - Fieldbus specifications - Part 4-11: Data-link layer protocol specificationn - Type 11 elements

IEC 61158-4-11:2014 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.

It includes procedures for giving communications opportunities to all participating DL entities, sequentially and in a cyclic manner, for deterministic and synchronized transfer at cyclic intervals up to one millisecond.

There are procedures for giving communication opportunities available for time-critical data transmission together with non-time-critical data transmission without prejudice to the time-critical data transmission.

Procedures are also specified for giving cyclic and acyclic communication opportunities for time-critical data transmission with prioritized access.

Additionally, the document outlines procedures for giving communication opportunities based on standard ISO/IEC 8802-3 medium access control, with provisions for nodes to be added or removed during normal operation.

It specifies 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 third edition cancels and replaces the second edition published in 2010 and constitutes a technical revision.

The main changes are:

  • Subclauses 4.6.1, 4.6.4 and 5.4.6, Clause 6 and 7.2 for the loop-architecture are modified to cover the additional specifications for the higher data rate in the loop-architecture.
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