Control system for scalable experiments at COSY

The data acquisition for experiments at the KFA Juelich Cooler Synchrotron COSY is based on VME, FASTBUS, CAMAC, VICbus, Ethernet and UNIX workstations. Controller and master, equipped with CPUs, VME CPUs and workstations are formed to a distributed processor system, in software arranged by the object oriented Experiment Message Specification (EMS) protocol according to the server client connectivity. To perform the control of various experiment arrangements, composed of different number of crates with many embedded modules, a control system, running on workstations was developed. Configurable setup of the front end, run control, and distribution and decoding of event data are involved in the system. Experiment customizing is performed by ASCII files in an easy manner. The software is structured by dedicated clients with OSF/Motif user interface and access to the configurable experiment database. The design and state of the control system will be presented