Boots – shoes – and leggings
Patent
1984-12-17
1987-06-09
Smith, Jerry
Boots, shoes, and leggings
364131, 364186, 364187, 364900, 371 9, G05B 1508, G05B 1918
Patent
active
046725300
ABSTRACT:
A distributed control system controlling a plurality of subprocesses wherein each of the process control computers (44, 46, 48) executes a preprogrammed set of instructions (50-62) identical to the preprogrammed set of instructions (50-62) in the other process control computers (44, 46, 48) in the distributed control system. Inputs from field devices (76, 78, 80) are connected between each subprocess and the process control computer (44, 46, 48) providing control therefor as well as between each subprocess and the process control computer (44, 46, 48) providing redundant safety backup of the operational safety. One or more of the process control computer (44, 46, 48) in the distributed control system executes some preprogrammed set of instructions (50-62) as part of the preprogrammed set of instructions for which there are no inputs from field devices (76, 78, 80) or output control signals to field devices (76, 78, 80).
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Combustion Engineering Inc.
Fournier, Jr. Arthur E.
Lastova John R.
Smith Jerry
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