Addon mechanism for a control system based on a type data field

摘要

Flexible extension of a control system needs to be possible without touching the original object model and hence the control software. To this end, the invention proposes attaching data elements which contain registration information for existing and newly added tools to object data. An object type can then be instantiated selectively for the existing or new tools. This allows extensions to be instantiated subsequently without affecting the essence of the existing object model.