Abstract: The invention relates to routing messages over a network of interconnected devices of a networked control system, particularly to routing messages for individually controlling devices of a networked control system such as light sources of a lighting system. A basic idea of the invention is to determine a routing path for a message from a sender device to a destination device through the grid of interconnected devices of a networked control system, and to change the routing path, when a faulty device is contained in the routing path, in order to route the message around the faulty device, instead of determining an entirely new routing path. Thus, an efficient routing of a message over a network of interconnected device may be provided.