US 9,811,696 B2
Method for operating a field device of process automation technology
Eric Birgel, Schopfheim (DE); Jorg Hahniche, Bad Krozingen (DE); and Axel Poschmann, Basel (CH)
Assigned to Endress + Hauser GmbH + Co. KG, Maulburg (DE)
Appl. No. 14/366,412
Filed by Endress + Hauser GmbH + Co. KG, Maulburg (DE)
PCT Filed Dec. 7, 2012, PCT No. PCT/EP2012/074747
§ 371(c)(1), (2) Date Jun. 18, 2014,
PCT Pub. No. WO2013/092246, PCT Pub. Date Jun. 27, 2013.
Claims priority of application No. 10 2011 089 346 (DE), filed on Dec. 21, 2011.
Prior Publication US 2014/0327522 A1, Nov. 6, 2014
Int. Cl. G06K 7/10 (2006.01); H04B 5/00 (2006.01); G06K 19/07 (2006.01)
CPC G06K 7/10297 (2013.01) [G06K 19/0716 (2013.01); H04B 5/0037 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for operating a field device of process automation technology, which includes a main circuit, including a microprocessor and a memory unit, a first interface and a wireless second interface which serves for transmission of data and electrical energy to the field device, comprising the steps of:
evaluating and outputting of process data by the main circuit in a first operating mode and supplying the field device with electrical energy via the first interface in the first operating mode;
supplying the field device in a second operating mode exclusively with electrical energy obtained via said wireless second interface;
supplying the microprocessor and the memory unit with electrical energy via the wireless second interface in the second operating mode
in the second operating mode, data are written into the memory unit via the second interface;
in the second operating mode, data written into the memory unit of the microprocessor are read-out and stored in an internal memory of the microprocessor; and
the second interface includes an auxiliary circuit, which serves for preprocessing the data received via the second interface, and the auxiliary circuit is connected respectively with the microprocessor of the main circuit and with the memory unit of the main circuit.