DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN EN IEC 61158-4-28
Industrial communication networks - Fieldbus specifications - Part 4-28: Data-link layer protocol specification - Type 28 elements (IEC 61158-4-28:2023); English version EN IEC 61158-4-28:2023
Industrielle Kommunikationsnetze - Feldbusse - Teil 4-28: Protokollspezifikation des Data Link Layer (Sicherungsschicht) - Typ 28-Elemente (IEC 61158-4-28:2023); Englische Fassung EN IEC 61158-4-28:2023
Overview
This part of 61158 provides a means of connecting devices through a partial mesh network, such that most failures of an interconnection between two devices can be circumvented. In common practice, the devices are interconnected in a non-redundant hierarchical manner reflecting application needs. This document specifies: a) 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; b) the structure of the fieldbus DLPDUs used for the transfer of data and control information by the protocol of this document, and their representation as physical interface data units. This document applies only to the CPF22 AUTBUS communication profile family. This document can be used as a guide by developers of security layer protocols in an industrial field environment for automation controllers.
