This type of storage includes shelves placed next to each other and on top of each other. Each shelf is designed to hold one tray.
A crane moves the trays from a pick-up point to a position in the storage, and places it on a shelf. The storage handling can be chaotic or sorted.
The PLC control will always know the position of each tray and its content.
Each module includes two rows of shelves with one crane in the middle, servicing both sides.