During the overall automation of the Kleinklettau production plant of Heinz–Glas controlling of the newly constructed tank 3 was intended to be integrated into the existing PCS7 system. Some new controlling concepts were introduced to optimize the production process. The glass temperatures within the feeders are now governed by special fuzzy-algorithms to largely eliminate bead weight fluctuations due to temperature variations. To provide faster reaction time for the operator personnel, the alarm system was connected to the existing radio call system.