Method for extending the operating functionality of a field device in the field of automation technology from one operating device to at least one other operating device

A method for extending the operating functionality of a field device of automation technology from one operating device to at least one other operating device, comprising:

• establishing a wireless communication connection between the operating device and the field device via a first communication interface of the operating device, wherein the operating device executes at least one operating program having a plurality of display elements and operating functions, via which the field device is serviced;
• initiating a search via the first communication interface or a second communication interface for other operating devices located in the vicinity and known to the operating device;
• in the case in which at least one other operating device known to the operating device is found, establishing a wireless communication connection between the operating device and the other operating device via the first communication interface, or the second communication interface, wherein another operating program is running on the other operating device;
• transmitting at least a part of the display elements or operating functions to the other operating program of the other operating device;
• and
• servicing the field device by means of the other operating device via the display elements and operating functions transmitted to the other operating program;
• wherein when at least one other operating device not known to the operating devices is found, the operating device performs a suitability test of the other operating device.