The connection between different zones can be realized by diverters or by a linear coupler. All dispatches are monitored and coordinated by the AC 3000 / AC 4000 control system. A stable base frame made of anodized aluminium system profiles is constructed in up to 3 rows, resulting in shorter connection routes and run times. The carrier return is possible upwards or alternatively downwards. The incoming carriers are stored and separated above the linear coupler.