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In compliance with the DIN EN 61158 standard series the layers 1, 2 and 7 of a fieldbus are designed in accordance with ISO/IEC 7498-1. This standard describes layer 2 of Type 1 (FOUNDATION fieldbus). It defines the externally visible services provided by the Type 1 fieldbus data-link layer (FOUNDATION fieldbus). The responsible committee is DKE/K 956 "Feldbus" ("Fieldbus") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.
This document replaces DIN EN 61158-3-1:2008-09 .