1. An input stage for a motor controller, in particular a motor controller for an electric motor, wherein the input stage has an input for inputting an input signal, and an output for connecting to the motor controller, wherein the input stage is designed to generate a control signal from an input signal between a first voltage U unten and a second voltage U oben >U unten , and to output the control signal as a target value parameter to the motor controller via the output, characterized by a first comparator for comparing the input signal with a first threshold voltage U S1 > oben , and a data output unit, wherein the data output unit generates a communication signal on the basis of at least a portion of the input signal, wherein the first comparator outputs an activation signal when the first threshold voltage U S1 has been reached or exceeded by the input signal, which activates an outputting of the communication signal to the output by the data output unit.