Redundant control system and control computer and peripheral...

Details Redundant control system and control computer and peripheral... Redundant control system and control computer and peripheral...

2006-10-10

2006-10-10

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S011000

Reexamination Certificate

active

07120820

ABSTRACT:
A redundant control system having at least a first and a second control computer (1,2) and at least one peripheral unit (5) that is connected to the control computers (1,2) by a bus system (3,4). Both control computers transmit cyclically changing signs of life (LzX, LzY) to the peripheral unit (5), which checks whether a change in the signs life has taken place within a given time period and which switches to the other control computer for executing the control tasks if the change in the sign of life is not timely received.

REFERENCES:
patent: 6542924 (2003-04-01), Abe
patent: 198 14 096 (1999-10-01), None
patent: 0 216 372 (1987-04-01), None
patent: 0 478 288 (1992-04-01), None
patent: WO 91/08535 (1991-06-01), None
patent: WO 99/50726 (1999-10-01), None
Siemens Catalog CA 01, Siemens AG, Automation & Drives, 1999 (Jun. 13, 2000).

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