1. An input stage for a motor controller, in particular a motor controller for an electric motor, wherein the input stage ( 1 ) has an input ( 3 ) for inputting an input signal, and an output ( 4 ) for connecting to the motor controller ( 2 ), wherein the input stage ( 1 ) 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 ( 2 ) via the output, characterized by a first comparator ( 5 ) for comparing the input signal with a first threshold voltage U S1 >U oben , and a data output unit ( 10 ), wherein the data output unit ( 10 ) generates a communication signal on the basis of at least a portion of the input signal, wherein the first comparator ( 5 ) 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 ( 4 ) by the data output unit ( 10 ).