A laser system includes one or more lasers and one or more laser processing units each connected to a respective one of the one or more lasers by a laser light cable and a data line associated uniquely with the laser light cable. Each laser processing unit includes a safety device for monitoring the laser processing unit and an interface for the data line. The laser system also includes a central safety control operably associated with the one or more laser processing units and configured to monitor the safety devices of multiple laser processing units of the laser system. The interface of each of the one or more laser processing units is connected to the central safety control and via the data line to the respective one of the one or more lasers.