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IEC 61158-3-4 Ed. 3.0 b:2019
M00001907
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IEC 61158-3-4 Ed. 3.0 b:2019 Industrial communication networks - Fieldbus specifications - Part 3-4: Data-link layer service definition - Type 4 elements
standard by International Electrotechnical Commission, 04/24/2019
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IEC 61158-3-4:2019 defines the services provided to the Type 4 fieldbus application layer at the boundary between the application and data-link layers of the fieldbus reference model and systems management at the boundary between the data-link layer and systems management of the fieldbus reference model. This third edition cancels and replaces the second edition published in 2014. It constitutes a technical revision. The main changes are:-Additional user parameters to services;
-Additional services to support distributed objects;
-Additional secure services