IEC 61158-3-4:2019 defines the services provided to the Type 4 fieldbus application layer at the boundary between the application and data-link layers of the fieldbus reference model and systems management at the boundary between the data-link layer and systems management of the fieldbus reference model. This third edition cancels and replaces the second edition published in 2014. It constitutes a technical revision. The main changes are:
-Additional user parameters to services;
-Additional services to support distributed objects;
-Additional secure services
WITHDRAWN
IEC 61158-3-4:2014 ED2
WITHDRAWN
IEC 61158-3-4:2019 ED3
99.60
Withdrawal effective
Mar 16, 2023
PUBLISHED
IEC 61158-3-4:2023 ED4