A maintainer is responsible for managing multiple laser systems in a machine or a machine plant. Using the OPC UA Laser Systems interface, the maintainer can see at a glance which laser system is running, not running or is in a fault condition. If the laser system is in a fault condition or not running, one can easily identify the reason, so that in the event of an unscheduled loss of production, quick action can be taken. In addition, the maintainer can use the parameters offered on the interface to make statements about the availability and non-availability of a laser system (see chapter 7.2.2).