Combined file and directory system for a process control digital computer system

摘要: An industrial production or other operational system is established by connecting apparatus which implements operations to a digital computer using an interface system. Machine readable definitions of events, executable jobs, and variables are prepared for entry ultimately configuration the into entity having characteristics corresponding entered definitions. The may include signals coupled between through system, such be put monitoring control uses both these in structured Some programs, but most preferably written out language systems engineer can understand use. Generally, designators names numbers. Any definition refer event, job, variable making reference designator that included job variable. Executable may, referring event designators, specify specific events trigger their execution--for example, scanning change-of-state events--or they periodically executed at specified frequency rate. processed individually off-line preliminary processor converts engineer's numeric intelligible processing programs within itself. then fed Automatic programming means establish all necessary linkages each new previously operative portions so as implement relative soon received automatically desired operating controlled operation interfaced apparatus. Definitions deleted from any time order automatic without shutting down thus modified whenever desirable. Following deletions, eliminates no longer required compresses tables stored maximize storage space available additional associated linkages.