Bus system and method for its operation

A bus system B in daisy-chain arrangement comprises a control unit 4 and an outgoing from the control unit 4 signal transmission means 5 with a plurality of bus users 1, 2, 3, which form along the signal transmission means 5, a series arrangement. The bus stations 1, 2, 3 include a receiver 6.1, 6.2, 6.3 and a transmitter 7.1, 7.2, 7.3, which are arranged such that the transmitter 7.1, 7.2, 7.3 of a bus subscriber 1, 2, 3 to the receiver 6.1, 6.2 is connected 6.3 of the following in the array bus subscriber 1, 2; 3. Each bus subscriber 1, 2, 3, whose emitter is connected to the receiver of another bus subscriber, is a switching device 9.1, 9.2, assigned to 9.3, which comprises a switching position, for which the respective bus subscriber 1, 2, 3, immediate connection of the transmitter of preceding bus subscriber 1, 2, 3 to the receiver 6.1, 6.2, 6.3 of the succeeding bus subscriber 1, 2, is prepared. 3 is further described a method for operating such a bus system. When an error occurs in a bus subscriber a switching device 9.1, 9.2, 9.3 is switched so that the data stream on the signal transmission device 5 by the transmitter 7.1, 7.2, 7.3 of the faulty bus subscriber 1, 2, 3 preceding bus stations 1, 2, 3 to the receiver 6.1 is forwarded 6.2, 6.3 of the succeeding bus subscriber 1, 2; 3.