Subscriber station for a serial bus system, and method for communication with differential signals in a serial bus system

A bus system, comprising:

• a bus;
• and
• at least two subscriber stations which are connected to one another via the bus in such a way that the at least two subscriber stations can communicate serially with one another and of which at least one subscriber station is a subscriber station including:
• a transmitting/receiving device configured to transmit a digital transmit signal as an analog differential signal onto a bus of the bus system in order to transmit a message to at least one other subscriber station of the bus system, and/or configured to receive an analog signal from the bus;
• a switching module configured to switch off a bus bias voltage for the bus during a predetermined detection period;
• a bus voltage detection module configured to detect a bus voltage received by the transmitting/receiving device from the bus during the predetermined detection period;
• and
• a bus voltage setting module configured to set the bus bias voltage to a voltage value resulting from a detection carried out by the bus voltage detection module during the predetermined detection period.

A method for communication with differential signals in a serial bus system, in which a subscriber station of the bus system has a transmitting/receiving device configured to transmit a digital transmit signal as an analog differential signal onto a bus of the bus system in order to transmit a message to at least one other subscriber station of the bus system, and/or configured to receive an analog signal from the bus, the method comprising the following steps:

• switching off, using a switching module, a bus bias voltage for the bus during a predetermined detection period;
• detecting, using a bus voltage detection module, a bus voltage received by the transmitting/receiving device from the bus during the predetermined detection period;
• and
• setting, using a bus voltage setting module, the bus bias voltage to a voltage value resulting from a detection carried out by the bus voltage detection module during the predetermined detection period.