BS EN 61158-4-8:2008

What is BS EN 61158-4-8 - Data link layer protocol type 8 elements about?

BS EN 61158-4-8 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. The data-link layer provides basic time-critical messaging communications between devices in an automation environment.

BS EN 61158-4-8 provides a highly optimized means of interchanging fixed-length input/output data and variable-length segmented messages between a single master device and a set of slave devices interconnected in a loop (ring) topology. The exchange of input/output data is totally synchronous by configuration and is unaffected by the messaging traffic.

BS EN 61158-4-8 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
• 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

Who is BS EN 61158-4-8 - Data link layer protocol type 8 elements for?

BS EN 61158-4-8 on data link layer protocol type 8 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 61158-4-8 - Data link layer protocol type 8 elements?

BS EN 61158-4-8 was 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/TR 61158-1. The data-link protocol provides the data-link service by making use of the services available from the physical layer. BS EN 61158-4-8 provide 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 implementors 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 61158-4-8 is concerned with the communication and interworking of sensors, effectors, and other automation devices. By using BS EN 61158-4-8 together with other standards positioned within the OSI or fieldbus reference models, otherwise incompatible systems may work together in any combination. Using BS EN 61158-4-8 guidelines, you are in a position to facilitate industrial automation that accelerates productivity.