IO Database

The IO Database is the central point of focus for the program. All of the devices, scripts, HMI, Interlocks, and other functions in the system use information from the IO Database. When the program loads it reads a database into RAM and from that point forward all IO operations are coordinated from RAM. RAM is used to maintain performance in the system. When required the program will write to the database in order to retain parameters for the next program startup.

The IO Database enables the specification of:

• engineering names, units
• min and max values
• linearization on an arbitrary schedule of points
• max ramp rate
• start stop bits for bit wise operations
• response time for reporting of warnings and errors for non responsive devices in the system
• start and end point auto scaling of engineering units
• Signal integration with retention in the database for logging kilowatt hours, for instance.
• Signal averaging to reduce noise
• Debugging screen that populates up to 32 points for real time viewing