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Environmental control with multiple zone central processor means

  • US 4,916,642 A
  • Filed: 01/14/1987
  • Issued: 04/10/1990
  • Est. Priority Date: 07/31/1981
  • Status: Expired due to Fees
First Claim
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1. A control system including:

  • a plurality of remotely controlled peripheral control elements for sensing at least one operating parameter of a plant and for controlling at least one operating parameter of said plant in response to said sensed parameter;

    a computer system including a processor, a disk operating system, an operator input means, and a visual monitor, for configuring a control program, for interrogating said at least one peripheral control element for sensing, and for commanding said at least one other peripheral control element for actuating according to said control program;

    a communication means, including a memory, for receiving information from said computer system in combination with commands for said communication means, for decoding said commands and storing said received information in said memory, for transmitting said received information to said peripheral control elements, for further receiving information from said peripheral control elements and storing said information in said memory, and for transmitting said stored information to said system processor;

    means for interfacing between said system processor and said communication means; and

    means for interfacing between said communication means and said peripheral control elements,said communication means being based on a microprocessor and said means for interfacing between said system processor and said communication means including;

    a plurality of bidirectional data registers having a port connected to at least one of the data bus of said system processor and the data bus of said communications processor;

    means for loading data into said registers from said system processor bus;

    means for reading data from said registers onto said system processor bus;

    means for loading data into said registers from said communication processor bus; and

    means for reading data from said registers onto said communications processor bus.

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