This example describes the safety functions for the safeguarding of a production cell. Objects are transferred through an entry gate, which is guarded by a light curtain. This light curtain can be muted only for material transport into the cell. The cell may be entered by the operator through a safety door. The process inside the cell is controlled by the functional application and enabled by the safety circuit. In case of a safety demand or an error, all hazardous movements are stopped in accordance with stop category 0.