Boots – shoes – and leggings
Patent
1992-11-25
1995-02-14
Voeltz, Emanuel T.
Boots, shoes, and leggings
G06K 1500
Patent
active
053901320
ABSTRACT:
A distributed control system comprising a control station and a remote input/output device interconnected by a bus, wherein the system is provided with a continuation transmission service which first transmits an urgent output only and then performs cyclic scan transmission; an initialization start transmission service which first performs cyclic scan transmission for input only; an interruption duration measuring feature which measures the period of transmission interruption; and a control feature which activates the continuation transmission service when the result of the measurement is shorter than a predetermined period of time, and which activates the initialization start transmission service when the result of the measurement is longer than the predetermined period of time. Thus, for example, after a power supply failure, the system can rapidly recover and shift to normal process controlling operation without the delays normally experienced by prior control systems.
REFERENCES:
patent: 4546429 (1985-10-01), Chan et al.
patent: 4601012 (1986-07-01), Aiken, Jr.
patent: 4697266 (1987-09-01), Finley
patent: 4945474 (1990-07-01), Elliott et al.
patent: 5193181 (1993-03-01), Barlow et al.
Akiyama Chuji
Ishikawa Makio
Matsukawa Hideo
Sakamoto Hideyuki
Shioe Yasuhiko
Kojima Moonray
Peeso Thomas
Voeltz Emanuel T.
Yokogawa Electric Corporation
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