Control of field device on low power wireless networks

Details Control of field device on low power wireless networks Control of field device on low power wireless networks

H - Electricity

04

W

H04W 40/00 (2009.01) H04W 80/02 (2009.01)

Patent

CA 2675452

A control system uses a wireless network to provide communication between a host computer and field devices. The host and the field devices communicate with one another using control messages and response messages based upon a known control system protocol. The control and response messages are embedded as a payload within a wireless message that is transmitted over the wireless network. When the wireless message is received at its ultimate destination, the control or response message is separated from the wireless message and is delivered to the intended recipient (either a field device or the host computer).

L'invention concerne un système de commande faisant appel à un réseau sans fil pour fournir une communication entre un ordinateur hôte et des dispositifs de terrain. Cet ordinateur hôte et les dispositifs de terrain communiquent entre eux par des messages de commande et par des messages de réponse, en fonction d'un protocole de système de commande connu. Les messages de commande et les messages de réponse sont intégrés, en tant que charge utile, dans un message sans fil, qui est transmis sur le réseau sans fil. Lorsque le message sans fil est reçu à sa destination ultime, le message de commande ou de réponse est séparé du message sans fil, et est distribué au destinataire voulu (soit un dispositif de terrain, soit un ordinateur hôte).

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