Communications: electrical – Continuously variable indicating – With meter reading
Patent
1983-10-07
1986-08-19
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34082505, 370 85, 364186, H04Q 900, G06F 1546
Patent
active
046072560
ABSTRACT:
A plant management system is provided. The system includes one or more digital process control and data acquisition subsystems and a plant control network. Each control subsystem includes a data highway, and process control, and process interface units. The plant control network is a token-passing distributed plant control network in which a plurality of physical modules communicate with one another over a plant control bus. While there are limited number of different types with each type having different functions, all physical modules have common units, one of which is a module central processor unit. Both the number of modules and the number of types of modules of a plant control network have both a maximum and a minimum. Reliability of the plant management system is improved by a provision for redundancy at the physical module level. One type of physical module provides data communication and translation facilities between the plant control network bus and the data highway of a control subsystem. Another type of module provides a universal operator station at which is available all information and capabilities needed by an operator to operate a plant.
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"Basic System, TDC 2000"; System Summary, SY-02-02, dated 6/81, pp. 1-12, Honeywell.
Honeywell Inc.
Medved A.
Sapelli A. A.
Solakian J. S.
Yusko Donald J.
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