US 12,346,077 B2
System comprising a field device and a control device and method for operating such a system
Olivier Dubray, Chatuzange-le-Goubet (FR); Denis Lambert, Saint Bardoux (FR); Fabrice Marcel, Saint Péray (FR); Pierre Metral, Chanos-Curson (FR); Florian Chanal, Saint Barthelemy de Vals (FR); and Vincent Pichot, Romans-sur-Isère (FR)
Filed by KROHNE S.A.S., Romans-sur-Isère (FR)
Filed on Mar. 17, 2022, as Appl. No. 17/655,271.
Claims priority of application No. 10 2021 106 820.7 (DE), filed on Mar. 19, 2021.
Prior Publication US 2022/0299962 A1, Sep. 22, 2022
Int. Cl. G06F 15/173 (2006.01); G05B 19/042 (2006.01); H04L 67/10 (2022.01)
CPC G05B 19/042 (2013.01) [H04L 67/10 (2013.01); G05B 2219/2231 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system, comprising:
a field device; and
a control device;
wherein the field device includes a field device controller and a field device transmitter;
wherein the control device includes a control device controller and a control device transmitter;
wherein the field device transmitter and the control device transmitter have a transmission path between them;
wherein the field device controller and the control device controller are adapted for bidirectional transmission of messages between one another according to a communication protocol via the field device transmitter, the transmission path and the control device transmitter;
wherein the communication protocol implements the transmission of messages with a master role and a slave role;
wherein the field device controller implements the master role and the control device controller implements the slave role;
wherein the field device controller has a working mode and a transmission mode;
wherein the working mode and the transmission mode are separated in time;
wherein only the transmission mode is designed to transmit messages;
wherein the field device controller is designed to alternate between the working mode and the transmission mode; and
wherein during operation of the system, the field device controller alternates between the working mode and the transmission mode.