IEC 61158-3-3:2014 defines the services provided to the Type 3 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 second edition cancels and replaces the first edition published in 2007. It constitutes a technical revision. The main changes are: Two notes in definitions modified.