Method and device for automatically attributing addresses to...

H - Electricity – 04 – L

Patent

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H04L 29/12 (2006.01)

Patent

CA 2399165

The invention concerns a method whereby each module is determined from the address of the module located immediately upstream in the network relative to the central unit, the detected address being transmitted by the upstream module in an attribution message, which triggers off an automatic search phase for the module without address, nearest downstream to a module with an address, during which each downstream module without address receives (50) the address attribution message, triggers (52) a delay whereof the duration is so much longer if the received message reception is low, and if at the end (54) of the delay, no address capture message is detected (53), it transmits (56) such a message, stores (57) the received address, determines the address of the nearest downstream module without address, and triggers (30) the search phase for the nearest downstream module without address.

Dans ce procédé, l'adresse de chaque module est déterminée à partir de l'adresse du module situé immédiatement en amont dans le réseau par rapport à l'unité centrale, l'adresse déterminée étant émise par le module amont dans un message d'attribution d'adresse, ce qui déclenche une phase de recherche automatique du module sans adresse, le plus proche en aval d'un module avec adresse, au cours de laquelle chaque module aval sans adresse reçoit (50) le message d'attribution d'adresse, déclenche (52) une temporisation dont la durée est d'autant plus grande que le niveau de réception du message reçu est faible, et si à la fin (54) de la temporisation, aucun message de capture d'adresse n'est détecté (53), il émet (56) un tel message, mémorise (57) l'adresse reçue, détermine l'adresse du module sans adresse, le plus proche en aval, et déclenche (30) la phase de recherche du module sans adresse, le plus proche en aval.

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