What is BS EN IEC 61158-4-24 - Data link type 24 elements about?
BS EN IEC 61158-4-24 is part of the BS EN IEC 61158 series that has been created to facilitate the interconnection of automation system components. The data-link layer provides basic time-critical messaging communications between devices in an automation environment. BS EN IEC 61158-4-24 provides communication opportunities to all participating data-link entities:
- In a synchronously-starting cyclic manner, according to a pre-established schedule
- In an acyclic manner, as requested by each of those data-link entities
BS EN IEC 61158-4-24 is characterized as one which provides cyclic and acyclic access asynchronously but with a synchronous restart of each cycle.
BS EN IEC 61158-4-24 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 datalink service provider
- Procedures for giving communications opportunities to all participating DL-entities (DLEs), sequentially and in a cyclic manner for deterministic and synchronized transfer at cyclic intervals up to 64 ms
- 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 for giving cyclic and acyclic communication opportunities for time-critical data transmission with prioritized access
- Procedures for giving communication opportunities based on ISO/IEC/IEEE 8802-3 medium access control, with provisions for nodes to be added or removed during normal operation
- The structure of the Fieldbus DLPDUs used for the transfer of data and control information by the protocol of BS EN IEC 61158-4-24, and their representation as physical interface data units
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Who is BS EN IEC 61158-4-24 - Data link type 24 elements for?
BS EN IEC 61158-4-24 on Data link type 24 elements is useful for:
- The IT industry / Software programmers
- Internet engineering task forces
- The automation industry
- Networking sectors
- Implementors and designers of industrial automation systems
Why should you use BS EN IEC 61158-4-24 - Datalink type 24 elements?
BS EN IEC 61158-4-24 is produced to facilitate the interconnection of automation system components. It is related to other standards in the set as defined by the “three-layer” Fieldbus reference model described in IEC 61158-1. The data-link protocol provides the data-link service by making use of the services available from the physical layer. BS EN IEC 61158-4-24 provides a set of rules for communication expressed in terms of the procedures to be carried out by peer data-link entities (DLEs) at the time of communication. These rules for communication are intended to provide a sound basis for development in order to serve a variety of purposes:
- As a guide for implementers and designers
- For use in the testing and procurement of equipment
- As part of an agreement for the admittance of systems into the open systems environment
- As a refinement to the understanding of time-critical communications within OSI
BS EN IEC 61158-4-24 focuses on the communication and interworking of sensors, effectors and other automation devices. By using BS EN IEC 61158-4-24 together with other standards positioned within the OSI or Fieldbus reference models, otherwise incompatible systems may
work together in any combination. Using BS EN IEC 61158-4-24 guidelines, you are in a position to facilitate industrial automation that accelerates productivity.
What’s changed since the last update?
BS EN IEC 61158-4-24:2019 is the second edition that supersedes EN 61158-4-24:2014 and is identical to BS EN IEC 61158-4-24:2019. The technical changes as compared to the first edition published in 2014 are:
- Patent declaration in the Introduction
- Corrections on transmission sequence of fixed-width time slot type in 4.3.2
- Technical extension for band sharing between I/O data exchange and message communication
- Spelling and grammar
