A method of operating a bus system

A bus system comprising a control unit 1, as well as an outgoing from the control unit 1 bus 5 with a signal transmission means. The bus 5 comprises at least two bus coupling points 6, 7 connected to the signal transmitting means 2 of the bus 5 bus devices 3, 4. The bus system further includes an outgoing from the controller second, as structural bus formed bus 12 which is connected to the bus stations 3, 4 in such a way is that they are based on addressable their arrangement in the second bus 12th In a method for operating a bus system comprising a bus 5 for initialization of the bus 5 to the bus stations 3, 4 assigned by a second bus 12 according to their physical arrangement in this bus 12 individual addresses. In a method for operating a bus system comprising a bus 5, a second bus 12 is used for executing a power saving mode for the bus system for reactivating dormant bus nodes 3, 4 and / or the control device. 1