Boots – shoes – and leggings
Patent
1991-03-08
1992-10-20
Smith, Jerry
Boots, shoes, and leggings
364141, 364183, 36447411, 36447419, G06F 1546, G05B 1101
Patent
active
051575957
ABSTRACT:
A system and method for controlling operation of a plurality of elements in an automated process, such as a production process, and indicating error conditions as they occur. Each unique set of input and output conditions of the various system elements defines a unique logic state or zone. Thus, there are defined a multiplicity of valid system logic states or zones, each having a unique input/output image. A predetermined sequence of zones, productive zones representing designed machine operations, is stored in a zone table. All zones not explicitly defined in the zone table are automatically treated as error zones. A zone engine automatically cycles to observe any change in input/output image. Any change in inputs from the various system elements automatically transfer action to the unique zone associated with such inputs, resulting in corresponding changes in control outputs to the system elements and/or display an error message as appropriate.
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Hsu, "D
El Paso Technologies Company
Lisa Donald J.
Smith Jerry
Trammell Jim
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