A method for connecting a field device with a control unit and field unit

Shown and described is a method for connecting a field device (1) with a control unit (2). The invention has the object of proposing a method by which a connection between a field device and a control unit is also realized when the field device is attached to a hard to reach place. The object is achieved in that a request signal to the field device (1) is transmitted by the operating unit (2) and that by the field device (1) a response signal is generated in response to the request signal by the field device (1) is a flashing display and / or produces a color change of a display and / or an acoustic signal and / or a change of an acoustic signal. Furthermore, the invention relates to a field device (1).