CENELEC - EN 61158-4-20
Industrial communication networks - Fieldbus specifications - Part 4-20: Data-link layer protocol specification - Type 20 elements
| Organization: | CENELEC |
| Publication Date: | 1 October 2014 |
| Status: | active |
| Page Count: | 46 |
| ICS Code (Data link layer): | 35.100.20 |
| ICS Code (Open systems interconnection (OSI)): | 35.100 |
| ICS Code (Industrial process measurement and control): | 25.040.40 |
scope:
General
The data-link layer provides basic time-critical messaging communications between devices in an automation environment.
This protocol 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
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