Especially in engineering companies, requirements for shorter throughput times and low volumes of stock have made internal material flow indispensable. In this process, automated guided vehicles and electric monorail conveyors play an important part: here, workpieces within an assembly line are transported from one assembly station to the next one by vehicles of most different types of construction. In the corresponding control unit, wireless technologies such as WLAN or Bluetooth have replaced formerly applied trailing cables as well as fieldbus technology the classic 4-20 mA standard. So in 2006, the agricultural machine manufacturer John Deere in Mannheim accordingly processed changeover of its gear manufacturing and in 2007 tire fitting, both undertakings by applying DATAEAGLE data radio systems of Schildknecht AG. This modernization process was continued by wireless control of axle assembly as described in the following. All processes were implemented by Steuerungstechnik Ungethüm GmbH.