Detection and correction of a de-synchronization of a luminaire

A method for changing a light level of a luminaire connectable to a plurality of further luminaires allocated to at least one group via a network, the method comprising:

• receiving a status message from each of the further luminaires, each status message including status information indicating a current status, comprising a current light level, of the respective luminaire and trigger information about a trigger that prompted the respective luminaire to adopt the current status, wherein the trigger information is indicative of whether the trigger relates to all luminaires of a group or is only valid for the respective luminaire,
• selecting at least some of the received status messages that include trigger information indicative of a trigger relating to all luminaires of the allocated group and which do not include trigger information indicative of a trigger that is only valid for the luminaire having sent the respective status messages,
• comparing the current light level of each of the respective luminaires as indicated in the selected status messages to each other and to the light level of the luminaire itself;
• and checking whether a number of the selected status messages, which is greater than a predetermined threshold, include identical status information and/or corresponding trigger information corresponding to each other, and
• changing the light level of the luminaire to a light level selected in accordance with this status information or trigger information if the check is affirmative.