A bus system, a subscriber station, and a method for configuring a static bus system for a dynamic communication are provided. The bus system has at least two subscriber stations, a communications link for connecting the subscriber stations to each other, and at least one device for the dynamic communication between the subscriber stations of the bus system; the subscriber stations and the communications link are developed for the static communication, which is directed to messages to be transmitted on the bus system that are known when the bus system is made available and are configured according to specified transmitters and receivers, and the dynamic communication is directed to messages to be transmitted on the bus system that have become known only after the subscriber stations and the communications link have been made available and are configured according to specified transmitters and receivers.