Method of sequence control
January 4, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesSequence control system Programmable controller Method and apparatus for controlling an operation sequence of machinery Sequence control method and apparatus Method and apparatus for preventing performance of a critical operation unless selected control conditions are satisfied Sequence controller System for controlling instrument using a levels data structure and concurrently running compiler task and operator task Patent #: 4947315 InventorsAssigneeApplicationNo. 461073 filed on 01/04/1990US Classes:700/19, Plural controlled systems, mechanisms, or elements700/12State of condition or parameter (e.g., on/off)ExaminersPrimary: Smith, JerryAssistant: Gordon, Paul P. Attorney, Agent or FirmInternational ClassG05B 011/01Foreign Application Priority Data1989-08-09 JPAbstractIn a method of sequence control for controlling a production installation containing one or more functional units independent of brand and process of product to be produced, unit sequence programs are provided for each of the functional units. A series of steps from start process to a stop process are installed for every minimum function unit which are independent of brand and process of a product to be produced. Sequence control is performed by enabling and disabling the selected unit sequences automatically or manually, so that the functional unit is controlled by the parameter stored in the unit sequence program.Other References
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