  Detector control systems (DCS) include the read out, control and supervision
of hardware devices as well as the monitoring of external systems like cooling
system and the processing of control data. The implementation of such a system
in the final experiment has also to provide the communication with the trigger
and data acquisition system (TDAQ). In addition, conditions data which describe
the status of the pixel detector modules and their environment must be logged
and stored in a common LHC wide database system. At the combined test beam all
ATLAS subdetectors were operated together for the first time over a longer
period. To ensure the functionality of the pixel detector a control system was
set up. We describe the architecture chosen for the pixel detector control
system, the interfaces to hardware devices, the interfaces to the users and the
performance of our system. The embedding of the DCS in the common
infrastructure of the combined test beam and also its communication with
surrounding systems will be discussed in some detail.
