Reprogrammable field device in a distributed process control...

G - Physics – 05 – B

Patent

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Details

G05B 19/418 (2006.01) G05B 19/042 (2006.01)

Patent

CA 2386414

The present invention is directed to a method of reprogramming a field device (15) in a process control network (10) using the standard communications protocol for the network, and a reprogrammable field device in the process control network adapted for being reprogrammed using the standard communications protocol for the network. The method and device of the present invention use the standard communications protocol to transmit the downloaded code to the field device and store the downloaded code in the field device while the device is enabled to perform process control. Once the new code is downloaded and stored in the field device, the field device is disabled from performing process control, reprogrammed to execute the downloaded code, and reenabled to perform process control.

La présente invention concerne un technique permettant de reprogrammer un dispositif local (15) dans un réseau de contrôle de processus (10) au moyen du protocole standard de communications en vigueur pour ledit réseau, et un dispositif local reprogrammable dans le réseau de contrôle de processus conçu pour être reprogrammé à l'aide du protocole standard de communications pour ce réseau. La technique et le dispositif selon cette invention font intervenir le protocole standard de communications pour transmettre le code téléchargé au dispositif local et l'y stocker pendant que ce dispositif est habilité à exécuter le contrôle de processus. Une fois le nouveau code téléchargé et stocké dans le dispositif local, ledit dispositif local est mis hors service, reprogrammé en vue de la mise en en oeuvre du code téléchargé, puis remis en service pour l'exécution du contrôle de processus.

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