Genereller Datenaustausch

摘要

A process control computer system (10) with external peripherals has a data exchange logic to permit an outside application package (141) to be integrated into the system using a data file, generated off-line. When the outside application package is executing in the computer system, a first package is accessed to generate commands from information contained in the data file to obtain the necessary data. The data file includes source information of the necessary data internal to or external to the computer system. If however it is desired to output results of the predefined application function, a second package is accessed to generate appropriate commands.