The device functions provide access to devices. They allow access to SQL, dBASE, and ASCII files through database-like operations, and provide more control over output to printers.
With these functions you can open and close any device, and read from and write to any record or field in the device. You can store recipes or any other data in a database, and then down-load or up-load the data as required to an I/O device on the plant floor, or to the operator. You can also update the database with real-time data for data exchange with other applications.