Apparatus for generating and sending a serial data packet...

H - Electricity – 04 – L

Patent

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H04L 7/00 (2006.01) G05B 19/05 (2006.01) G06F 15/17 (2006.01) H04L 12/423 (2006.01) H04Q 9/14 (2006.01)

Patent

CA 2125705

A communication system between a microprocessor based device (10) and a network of a plurality of remote input/output repeater modules (l2a-12d) that control various input and output devices (22a-22d) and (21a-24d) uses a synchronous serial communications protocol. he microprocessor based device (10) contains a transmitter module for generating a data packet that is sent to the remote input/output repeater modules (12a-12d). The transmitter module controls the clock rate of the network and encodes the data packet with an output data byte for each of the repeater modules (12a-12d). The output byte determines the state of the output devices (24a-24d) that may be connected to the remote input/output repeater module coupled to the network.

Un système de communication entre un dispositif à microprocesseur (10) et un réseau de modules répéteurs d'entrée-sortie éloignés (12a-12d) commandant divers dispositifs d'entrée-sortie (22a-22d) et (21a-24d) utilise un protocole de communication série synchrone. Le dispositif à microprocesseur (10) contient un module émetteur pour la production d'un paquet de données qui est envoyé aux modules répéteurs d'entrée-sortie éloignés (12a-12d). Le module émetteur commande la fréquence d'horloge du réseau et code le paquet de données en affectant un multiplet de données de sortie à chacun des modules répéteurs (12a-12d). Le multiplet de sortie détermine l'état des dispositifs de sortie (24a-24d) qui peuvent être connectés au module répéteur d'entrée-sortie éloigné couplé au réseau.

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