An addressable bus node, comprising a but line input for connection to a first connecting point of a serial data bus; a bus line output for connection to a second connecting point of a serial data bus; a current measurement circuit configured to measure an output current, wherein the current measurement circuit is connected between the bus line input and the bus line output; an addressing current source generating an addressing current for the current measurement circuit; wherein the current measurement circuit measures the output current as a sum of a bus input current received on the bus line input and of the addressing current; and a control unit configured to: - adjust, after receiving a start signal, the addressing current such that the addressing current is substantially equal to a first predetermined value; - adjust the addressing current by controlling the addressing current source such that the current flowing through the current measurement circuit is regulated to a previously determined or a preset target value, wherein the addressing current is increased by an increase rate defined by a first time constant and is decreased by a decrease rate defined by a second time constant, wherein the decrease rate is larger than the increase rate and thus the second time constant is smaller than the first time constant; - determine, after lapse of a predetermined time from receiving the start signal, the value of the adjusted addressing current; and - accept an address in the case that the addressing current is substantially equal to a second predetermined value. a but line input for connection to a first connecting point of a serial data bus; a bus line output for connection to a second connecting point of a serial data bus; a current measurement circuit configured to measure an output current, wherein the current measurement circuit is connected between the bus line input and the bus line output; an addressing current source generating an addressing current for the current measurement circuit; wherein the current measurement circuit measures the output current as a sum of a bus input current received on the bus line input and of the addressing current; and a control unit configured to: - adjust, after receiving a start signal, the addressing current such that the addressing current is substantially equal to a first predetermined value; - adjust the addressing current by controlling the addressing current source such that the current flowing through the current measurement circuit is regulated to a previously determined or a preset target value, wherein the addressing current is increased by an increase rate defined by a first time constant and is decreased by a decrease rate defined by a second time constant, wherein the decrease rate is larger than the increase rate and thus the second time constant is smaller than the first time constant; - determine, after lapse of a predetermined time from receiving the start signal, the value of the adjusted addressing current; and - accept an address in the case that the addressing current is substantially equal to a second predetermined value. - adjust, after receiving a start signal, the addressing current such that the addressing current is substantially equal to a first predetermined value; - adjust the addressing current by controlling the addressing current source such that the current flowing through the current measurement circuit is regulated to a previously determined or a preset target value, wherein the addressing current is increased by an increase rate defined by a first time constant and is decreased by a decrease rate defined by a second time constant, wherein the decrease rate is larger than the increase rate and thus the second time constant is smaller than the first time constant; - determine, after lapse of a predetermined time from receiving the start signal, the value of the adjusted addressing current; and - accept an address in the case that the addressing current is substantially equal to a second predetermined value.