Using a CPU1510SP an automated warehouse is controlled by a stacker crane with 2 degrees of freedom and a stowage clamp.

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Two conveyors feed a new item to the stacker to start the storage routine, two additional conveyors deliver an outgoing item to another production line.

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The elements are stored in a shelf which contains a light sensor or photocell, allowing the PLC to identify free or occupied positions.

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Finally, a rotary selector and a numerical display allow the operator to set the position of the shelf in order to store or remove an item.