For the stacker cranes completely new cabinets were provided. The Siemens Simatic PLC Series S5 has been replaced by the latest generation of S7 series. The operation and visualisation had been realized with touch panels, which provides comfort and functional adaptation to the current requirements.
The implemented Siemens S7-PLC were equipped with a profibus-master and coupled with the individual segments. Thus, it was possible to obtain at the interfaces the respective data of the control. By reducing the frequency of errors, the operational reliability could be increased up to 98% availability.