Suitable components for the safety-related part of the control system must be selected based on the safety concept, and the interconnection of these components must be determined. Experts from SICK not only help with this, but they also verify whether the safety functions actually meet the required safety level. All technologies, such as pneumatic, hydraulic and electrical, are taken into account. The review not only involves the quantitative calculation of the safety level, but it also includes the definition of measures to be taken against systematic errors.