Software tools for production process control engineering, the development and integration of Add-Ons for control systems like WinCC, integration of sensors in AMS of Emerson and PDM of Siemens and the development of software for sensors like PACTware are the main focus points of our activity. We worked out the Field Device Tool ( FDT ) Specification and the Device Type Manager ( DTM ) Styleguide published by the Profibus PNO in close cooperation with field device manufacturers.