Planar drive system, having a stator and a rotor, wherein the stator has a plurality of stator conductors that can be energized, wherein the rotor has a magnet device with at least one rotor magnet, wherein a magnetic interaction between energized stator conductors of the stator and the magnet device of the rotor can be caused in order to drive the rotor, wherein the stator is designed to carry out the energization of stator conductors in such a way that an alternating magnetic field can be produced with the aid of energized stator conductors, wherein the rotor has at least one rotor coil, in which an alternating voltage can be induced on account of the alternating magnetic field, and wherein the planar drive system is designed to transmit data from the stator to the rotor, characterized in that the stator is designed to energize stator conductors by means of current control on the basis of pulse-width modulation, so that pulse-width-modulated periodic voltage pulses are applied to stator conductors that are to be energized, wherein, on account of the current control on the basis of the pulse-width modulation, a ripple current in energized stator conductors of the stator and, as a result, the alternating magnetic field can be produced, wherein the planar drive system is designed for the aforesaid data transmission from the stator to the rotor in that the stator is designed to exert a temporary influence on the energization of stator conductors, in order as a result to temporarily cause a change with respect to the alternating voltage that can be induced in the at least one rotor coil of the rotor, and wherein, for this purpose, the stator has an influencing device (191, 195, 196) for temporarily influencing the energization of stator conductors, which device is designed to influence the current control temporarily in such a way that a change with respect to the ripple current in energized stator conductors of the stator is caused. wherein the stator has a plurality of stator conductors that can be energized, wherein the rotor has a magnet device with at least one rotor magnet, wherein a magnetic interaction between energized stator conductors of the stator and the magnet device of the rotor can be caused in order to drive the rotor, wherein the stator is designed to carry out the energization of stator conductors in such a way that an alternating magnetic field can be produced with the aid of energized stator conductors, wherein the rotor has at least one rotor coil, in which an alternating voltage can be induced on account of the alternating magnetic field, and wherein the planar drive system is designed to transmit data from the stator to the rotor, characterized in that the stator is designed to energize stator conductors by means of current control on the basis of pulse-width modulation, so that pulse-width-modulated periodic voltage pulses are applied to stator conductors that are to be energized, wherein, on account of the current control on the basis of the pulse-width modulation, a ripple current in energized stator conductors of the stator and, as a result, the alternating magnetic field can be produced, wherein the planar drive system is designed for the aforesaid data transmission from the stator to the rotor in that the stator is designed to exert a temporary influence on the energization of stator conductors, in order as a result to temporarily cause a change with respect to the alternating voltage that can be induced in the at least one rotor coil of the rotor, and wherein, for this purpose, the stator has an influencing device (191, 195, 196) for temporarily influencing the energization of stator conductors, which device is designed to influence the current control temporarily in such a way that a change with respect to the ripple current in energized stator conductors of the stator is caused.