RO
SR EN 61158-4-4:2008
Industrial communication networks - Fieldbus specifications -- Part 4-4: Data-link layer protocol specification - Type 4 elements
It 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. It includes the following significant changes with respect to the previous edition deletion of the former Type 6 fieldbus, and the placeholder for a Type 5 fieldbus data-link layer, for lack of market relevance; addition of new types of fieldbuses; division of this part into multiple parts numbered.
Status :
Withdrawn
Approval date : 9/30/2008
Publish date : 10/2/2008
Withdrawal date : 9/19/2017
Number of pages : 53
ICS : 25.040.40 Industrial process measurement and control,35.100.20 Data link layer
Technical Committee : 23 - Industrial -process measurement and control
- Replaces SR EN 61158-4:2004
- Replaced by SR EN 61158-4-4:2015