D. Filimonov, S. Karnaev, B. Levichev, S. Smirnov, A.Veklov
The VEPP-4 control system was designed almost 20 years ago as CAMAC-based distributed control system . Today a main peculiarity of upgraded VEPP-4 control system is an employment of obsolete CAMAC-embedded 24-bit Odrenok computers on the middle (process) level . A three-link communication software is developed to provide an effective interaction between user (operator) applications on the high level and executive programs on the middle level. The communication software is Linux-based and includes the Application Server (ApS) and Odrenok Server (OdS). ApS provides channel and database access for user applications. OdS provides interactions between ApS and executive programs working in Odrenok computers. The backend database server is based on PostgreSQL. This paper describes a structure of the VEPP-4 control system database and the database and channel access procedures.
 A.Aleshaev, et al., 'VEPP-4 Control System', ICALEPCS'95, Chicago, USA
 A.Aleshaev, S.Karnaev, B.Levichev, I.Protopopov, S.Tararyshkin, 'VEPP-4 Control System Upgrade', ICALEPCS'97, Beijing, China
Last updated: September 13, 2002
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