Present status of the KEKB control system

Construction of the KEKB storage rings is now in the last phase. The control system for these two rings is under way. The main server workstation MELCOM ME-RK460 with two CPUs is connected to an FDDI switching equipment DEC GIGA Switch. From the FDDI switch, 26 optical fibre links are connected to 26 sub-control rooms around the rings and the injector linac. At present, 15 VME-bus based Input/Output Computers(IOCs) are installed in the local control rooms. About 60 IOCs will be added to the system this year. Software system is based on EPICS Tool Kit distributed through EPICS Collaboration. Relational database system, ORACLE, is used to store all the data about rings. By using this database, EPICS channel database records can be generated automatically.