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Manufacturing line control system

  • US 4,870,590 A
  • Filed: 01/22/1988
  • Issued: 09/26/1989
  • Est. Priority Date: 01/30/1987
  • Status: Expired due to Fees
First Claim
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1. In a manufacturing line control system comprising a line controller which performs various processing to products passing through a manufacturing line, and a line computer which conducts data processing from the line controller and send instructions thereto, the improvement comprisingsaid line controller comprising an input portion which receives signals indicative of information as to said products passing through said manufacturing line and transmitted from various equipment installed on said manufacturing line;

  • an output portion which supplies control signals to said various equipment; and

    a transmission interface for communicating with one of a host line computer and other line controllers; and

    said line computer comprising a microprocessor;

    a first bus connected to said microprocessor;

    a main memory consisting of a DRAM, a SRAM and a EPROM, said main memory being connected to said first bus and subjected to access by said microprocessor;

    a second bus whose bit number is smaller than that of said first bus;

    a bit number converting interface for controlling operation timing and connected between said first and second buses;

    a keyboard connected to said second bus through an interface;

    a back plane bus connected to said second bus through a bus interface;

    a CRT display device;

    a display control means connected to said back plane bus for controlling said CRT display device; and

    a bus interface connected to said back plane bus and performing transmission relative to said line controller.

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