Database and Channel Access on the VEPP-4
Filimonov, D. · Karnaev, S. · Levichev, B. · Smirnov, S. · Veklov, A.
Original · EN
The VEPP-4 control system was designed almost 20 years ago as CAMAC-based distributed control system. Today the main peculiarity of the upgraded VEPP-4 control system is the employment of obsolete CAMAC-embedded 24-bit Odrenok computers in the middle (process) level. The communication software is developed to provide an effective interaction between user (operator) applications on the high level and executive programs in the middle level. The communication software is Linux-based and includes the Application Server and Device Servers. The Application Server provides channel and database access for user applications. The Device Servers provide interaction with the hardware. The backend database server is based on PostgreSQL. This paper describes the structure of the VEPP-4 control system database and data/channel access procedures.
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