For the first time, an object oriented approach is used together with LabVIEW RT. This real-time variant of the well known graphical programming language is based on the PharLap OS. This allows for two different scenarios. First, existing object oriented LabVIEW code developed for MS Windows and Linux platforms can be reused on a real-time platform, next to a time-critical loop with high priority. The reusability of existing code drastically reduces the development time for complex data acquisition and control systems, based on PXI or cPCI platforms. Second, small PAC systems like the FieldPoint series from National Instruments have limited CPU power and memory. However, dedicated classes allow the usage of an object oriented approach and serve to integrate such sub-systems to larger SCADA systems.