SSH EN 61158-6:2004

Komunikimi i të dhënave shifrore për matje dhe kontroll - Bus tereni për përdorim në sistemet e kontrollit industrial - Pjesa 6: Specifikimi i shërbimit të shtresës së zbatimit

Digital data communication for measurement and control - Fieldbus for use in industrial control systems - Part 6: Application layer protocol specification

Scope

This part of EN 61158 is one of a series produced to facilitate the interconnection of automation system components. It is related to other standards in the set as defined by the three-layer Fieldbus Reference Model, which is based in part on the Basic Reference Model for Open Systems Interconnection. Both Reference Models subdivide the area of standardisation for interconnection into a series of layers of specification, each of manageable size. This standard describes the Fieldbus Application Layer (FAL) protocol that defines the information interchange and the interactions between Application Entity invocations (AE-Is) to support the Application Services. The Application Protocol provides the Application Service by making use of the services available from the Data Link Layer or other immediately lower layer.