Patent ID: 8521309

Claim:
A method for operating a system of field devices, wherein the system has at least three field devices (N−1), FN, F(N+1), and wherein the field devices are measuring devices and/or actuators and/or display devices, comprising the steps of: activating a second of the three field devices by a first of the three field devices; and in the case of successful activation of a second field device by the first field device, the first field device is deactivated, wherein two adjoining field devices F(N−1) and F(N) are connected with one another via two lines A(N) and A(N−1) having the purpose of activating the nth field device FN and activating the nth+1 field device F(N+1) respectively; and wherein the field devices F(N−1), FN, F(N+1) are additionally connected amongst one another with a data line and two energy supply lines.