A motor-driven conveyor roller comprising: - a conveyor roller tube which is rotatably mounted around an axle element (15,16), - a drive unit arranged within the conveyor roller tube, which is designed for torque generation and rotational movement between the axle element (15, 16) and the conveyor roller tube and is mechanically coupled to the axle element (15, 16) and the conveyor roller tube, - an energy line running from outside the conveyor roller tube to the drive unit, - a data line running from outside the conveyor roller tube to the drive unit, characterised in that the data line is designed as a bus line and is connected to the drive unit in terms of signals via a bus interface arranged in the conveyor roller tube, wherein the motor-driven conveyor roller comprises an electronic control unit, - which is designed to derive a prognosis characteristic value for the remaining service life of the motor-driven conveyor roller from data available at the bus interface, or - which is designed to calculate and shift permissible limit values for mechanical or thermal operating data from data available at the bus interface, or - which is designed to determine a configuration recommendation from data present at the bus interface and to output the configuration recommendation to a user via a user interface, or - which is designed to determine an operating data change to be made from data present at the bus interface and is preferably further designed to control the drive unit with the operating data change, or - which is designed to control the drive unit with first setpoint operating data and to determine an operating temperature of the conveyor roller from data present at the bus interface and to compare it with an upper and/or lower temperature limit value, in order to control the drive unit with second setpoint operating data changed from the first setpoint operating data when the upper temperature limit value is exceeded or when the lower temperature limit value is undershot, which cause a lower temperature generation within the drive unit, in particular by reducing the speed and/or the torque of the drive unit, or - which is signal-technically coupled to a presence sensor and is designed to receive a signal from the presence sensor which detects the presence or absence of a conveyed material in a region of a conveying path and to control the drive unit as a function of the signal in such a way that a contact or a contact with a contact force above a predetermined contact force limit between a first conveyed material conveyed with the conveying roller and a second conveyed material on the conveying path is avoided. - a conveyor roller tube which is rotatably mounted around an axle element (15,16), - a drive unit arranged within the conveyor roller tube, which is designed for torque generation and rotational movement between the axle element (15, 16) and the conveyor roller tube and is mechanically coupled to the axle element (15, 16) and the conveyor roller tube, - an energy line running from outside the conveyor roller tube to the drive unit, - a data line running from outside the conveyor roller tube to the drive unit, - which is designed to derive a prognosis characteristic value for the remaining service life of the motor-driven conveyor roller from data available at the bus interface, or - which is designed to calculate and shift permissible limit values for mechanical or thermal operating data from data available at the bus interface, or - which is designed to determine a configuration recommendation from data present at the bus interface and to output the configuration recommendation to a user via a user interface, or - which is designed to determine an operating data change to be made from data present at the bus interface and is preferably further designed to control the drive unit with the operating data change, or - which is designed to control the drive unit with first setpoint operating data and to determine an operating temperature of the conveyor roller from data present at the bus interface and to compare it with an upper and/or lower temperature limit value, in order to control the drive unit with second setpoint operating data changed from the first setpoint operating data when the upper temperature limit value is exceeded or when the lower temperature limit value is undershot, which cause a lower temperature generation within the drive unit, in particular by reducing the speed and/or the torque of the drive unit, or - which is signal-technically coupled to a presence sensor and is designed to receive a signal from the presence sensor which detects the presence or absence of a conveyed material in a region of a conveying path and to control the drive unit as a function of the signal in such a way that a contact or a contact with a contact force above a predetermined contact force limit between a first conveyed material conveyed with the conveying roller and a second conveyed material on the conveying path is avoided.