Applies To:
  • CitectSCADA 1.00 1.01 1.10 1.11 1.20 2.00 2.01 3.00

Whenever a project which uses Bailey variables is compiled, special RDB files are generated. The compiler extracts information about Bailey variables from the variable.dbf files to generate these RDB files. One RDB file is generate for each Bailey CIU device. The name of the RDB file is the Bailey device name prefixed by an underscore. (e.g. If your Bailey I/O device is called 'boiler', the Citect compiler will generate a file called '_boiler.rdb', which contains the definition of all Bailey variables declared for that unit.) The Bailey protocol drivers use these RDB files to establish, connect and extract data from the CIU. 

Whenever changes are made to Bailey variables in a project, the project must be recompiled to generate new RDB files. Whenever a project which uses Bailey variables is compiled because of changes to Bailey variables. The IO server must be restarted to cause the Bailey protocol driver to use the new RDB files.RDB files will only be generated if there are variables defined for that Bailey IO device.