Vertical Slice of the ATLAS Detector Control System

The ATLAS Detector Control System consists of two main components: a distributed supervisor system, running on PCs, called Back-End system, and the different Front-End systems. For the former the commercial Supervisory Control And Data Acquisition system PVSS-II has been selected. As one solution for the latter, a general purpose I/O concentrator called Embedded Local Monitor Board has been developed. This paper describes a full vertical slice of the detector control system, including the interplay between the Embedded Local Monitor Board and PVSS-II. Examples of typical control applications will be given as well.