H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 4/12 (2009.01) H04W 88/16 (2009.01)
Patent
CA 2675235
A host computer communicates with field devices over a wireless network that includes a gateway and a plurality of wireless nodes. At least one of the field devices is associated with each wireless node, and each field device has a unique field device address. The host computer sends control messages to field devices using their field device addresses. The gateway translates the field device address of a control message to a wireless address of the wireless node with which the field device is associated. The gateway sends a wireless message over the network to the wireless node at the wireless address. The message contains the field device address so that, when the wireless message is received and opened, the control message from the host computer can be routed to the intended field device based upon the field device address.
Un ordinateur hôte communique avec des dispositifs de terrain via un réseau sans fil comportant une passerelle et plusieurs nAEuds sans fil. L~un au moins des dispositifs de terrain est associé à chacun des nAEuds sans fil et chaque nAEud sans fil présente une unique adresse de dispositif de terrain. L~ordinateur hôte transmet des messages de commande aux dispositifs de terrain à l'aide de leurs adresses. La passerelle traduit l~adresse du dispositif de terrain d~un message de commande en adresse sans fil du nAEud sans fil associé au dispositif de terrain. La passerelle transmet sur le réseau un message sans fil au nAEud sans fil à l~adresse sans fil. Comme le message contient l~adresse du dispositif de terrains, lorsque le message sans fil est reçu et ouvert, le message de commande de l~ordinateur hôte peut être acheminé à l~adresse du dispositif de terrain voulu.
Dobrowski Patrick W.
Lovegren Eric R.
Orth Kelly M.
Stotz Kyle L.
Fisher-Rosemount Systems Inc.
Rogers Law Office
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