<p>A single routine layer model is formed of several layers of different types having different priorities. Different user and system layers are provided from the highest to the lowest priority. Technology packets are loaded into the engineering and/or run-time system. A data source makes voice commands and/or system variables available to the engineering system via a converter. The system variables with the current technical process data can be supplied from the run-time system. An operator panel of the engineering system can be used for further user inputs.</p>
