IEC 61158-4-25 Ed. 1.0 en:2019

IEC 61158-4-25 Ed. 1.0 en:2019 Industrial communication networks - Fieldbus specifications - Part 4-25: Data-link layer protocol specification - Type 25 elements
standard by International Electrotechnical Commission, 04/10/2019

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IEC 61158-4-25:2019 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, and the communication and interworking of sensors, effectors and other automation devices. By using this document together with other standards positioned within the OSI or fieldbus reference models, otherwise incompatible systems may work together in any combination.