Safety system and method using a safety system

A safety system having at least one sensor system having at least one sensor in a first housing and at least one programmable controller in a second housing, wherein the sensor system has a first control and evaluation unit, with the first control and evaluation unit being configured to evaluate sensor data from the sensor of the sensor system and to form first result signals, wherein the programmable controller has a second control and evaluation unit,

• wherein the sensor system is configured to transfer sensor data to the second control and evaluation unit,
• with the second control and evaluation unit being configured to evaluate sensor data from the sensor of the sensor system and to form second result signals,
• and with a comparator unit being provided, with the comparator unit being configured to compare the first result signals and the second result signals with one another and generates safe output signals.