Communication system

Details Communication system Communication system

1996-10-07

1998-04-28

Mullen, Thomas

Communications: electrical

Continuously variable indicating

370330, 364132, 34082552, G08C 1916

Patent

active

057450480

ABSTRACT:
A master device sends a continuation (or stop) message on a communication line without causing mutual collision on the communication line with a response message continuously sent from a slave device. When time T1 has elapsed since completion of sending of a request message, a failure-diagnosis tester 5 (master) performs setting to send a continuation message when an idle counter has exceeded P3', and along with this, an engine controller 1 (slave) performs setting to send a subsequent response message when an idle counter has exceeded P2' (>P3'). Through this, the continuation message can be sent from the failure-diagnosis tester 5 prior to the engine controller 1 sending the subsequent response message, without causing the two messages to mutually collide on the communication line.

REFERENCES:
patent: 5166678 (1992-11-01), Warrior
patent: 5184121 (1993-02-01), Kogure et al.
patent: 5200745 (1993-04-01), Takai et al.
patent: 5305355 (1994-04-01), Go
patent: 5511230 (1996-04-01), Rtu
patent: 5528605 (1996-06-01), Ywoskus
patent: 5585788 (1996-12-01), Hashimoto

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