RO
SR EN 61158-4-3:2008
Industrial communication networks - Fieldbus specifications -- Part 4-3: Data-link layer protocol specification - Type 3 elements
It provides basic time-critical messaging communications between devices in an automation environment. This protocol provides communication opportunities to a pre-selected 'master' subset of data-link entities in a cyclic asynchronous manner, sequentially to each of those data-link entities. Other data-link entities communicate only as permitted and delegated by those master data-link entities. 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Withdrawn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 : 3/28/2015
Number of pages : 178
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 61158-4-3:2012