A method for operating a field device of the process automation technology

摘要

A method for operating a field device (f) of the process automation technology, wherein the field device (f) via a main circuit (μc, sp1) which, in a first operating mode for the evaluation and for the output of process data is used, preferably made of a flow meter (s), said field device (f) via a first interface (d), which is used for the purpose of the field device (f), in particular the main circuit (μc, sp1), in the first operating mode to be supplied with electric energy, wherein the field device (f) via a second, preferably wireless interface (ds), which is used for the purpose of data and / or electrical energy to the field device (f), wherein the field device (f), preferably of the main circuit (μc, sp1), in a second operating mode, with, preferably with exclusively, via the second interface (ds) is supplied with electrical energy obtained.