Direct control of devices through a programmable controller...

G - Physics – 05 – B

Patent

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G05B 19/05 (2006.01)

Patent

CA 2757431

Aspects of the invention support direct communication between a low-level device and a programmable controller over an automation bus in an industrial automation system for controlling and monitoring an industrial process. A leaf node device may include a low-level device. The leaf node device communicates directly with the programmable controller at the network layer, e.g., Internet Protocol (IP) based on an IP address contained in a signal so that the programmable controller may control the low-level device or receive status information about the low-level device. The industrial automation system may support a plurality of leaf node devices, which may be associated with different automation buses having different communication media. Signals between the programmable controller and the leaf node device may be directed with or without a switching element.

La présente invention concerne la communication directe entre un dispositif bas niveau et un contrôleur programmable sur un bus d'automatisation dans un système d'automatisation industrielle pour contrôler et surveiller un processus industriel. Un dispositif de nud terminal peut comprendre un dispositif bas niveau. Le dispositif de nud terminal communique directement avec le contrôleur programmable au niveau de la couche réseau, par exemple par protocole Internet (IP), sur la base d'une adresse IP contenue dans un signal, de sorte que le contrôleur programmable puisse contrôler le dispositif bas niveau ou recevoir des informations d'état concernant le dispositif bas niveau. Le système d'automatisation industrielle peut supporter une pluralité de dispositifs de nud terminal, qui peuvent être associés à différents bus d'automatisation présentant différents moyens de communication. Des signaux entre le contrôleur programmable et le dispositif de nud terminal peuvent être commandés avec ou sans un élément de commutation.

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