A hardware controls system has been implemented for the STAR experiment at
RHIC. Approximately 1000 parameters governing experiment operation are curr
ently controlled and monitored.
The system is based on the Experimental Physics and Industrial Control Syst
em (EPICS). The architecture of STAR hardware controls will be presented as
well as the results of operation of the integrated baseline system. Novel
features of the system include a specialized field bus (High-level Data Lin
k Control - HDLC), new EPICS record support, Control DEVice (CDEV) interfac
es to accelerator and magnet control systems, and C++ based communication b
etween STAR online and Hardware Controls and their associated databases.