Patent ID: 9730161
Date: 2017-08-08
CPC Classifications: H04W,Y02D

Claim:
1. A radio module for a field device, wherein said field device has a first operating mode, which is an electrical current saving mode, wherein said field device has a second operating mode, which serves to ascertain a process variable and to transmit corresponding process data wirelessly by means of the radio module, wherein the radio module contains a schedule, according to which process data are downloaded from the field device by means of the radio module and wirelessly transmitted to a superordinated unit, and wherein, based on said schedule, the radio module transmits to the field device control signals, which serve to switch the field device from said first operating mode to said second operating mode, wherein the radio module further contains a first signal line directly connecting the field device to the radio unit with a first end point at the field device and a second end point at the radio module, for transferring process data between the field device and the radio module, a second signal line directly connecting the field device to the radio unit with a first end point at the field device and a second end point at the radio module for transmitting said control signals from the radio module to the field device, and a third signal line directly connecting the field device to the radio unit with a first end point at the field device and a second end point at the radio module; wherein the radio module includes an energy source, by means of which the field device is supplied with electrical energy via the third signal line; and wherein the signal lines are separate from one another.