DIN EN 61158-3-20
Industrial communication networks - Fieldbus specifications - Part 3-20: Data-link layer service definition - Type 20 elements (IEC 61158-3-20:2014); English version EN 61158-3-20:2014, only on CD-ROM
Industrielle Kommunikationsnetze - Feldbusse - Teil 3-20: Dienstfestlegungen des Data Link Layer (Sicherungsschicht) -Typ 20-Elemente (IEC 61158-3-20:2014); Englische Fassung EN 61158-3-20:2014, nur auf CD-ROM
Overview
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 20 (HART). It defines the externally visible service provided by the Type 20 fieldbus data-link layer (HART). The responsible committee is DKE/K 956 "Feldbus" ("Fieldbus") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.