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Method and circuit configuration for monitoring machine parameters

  • US 6,618,637 B1
  • Filed: 10/20/2000
  • Issued: 09/09/2003
  • Est. Priority Date: 01/24/1998
  • Status: Expired due to Fees
First Claim
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1. A method for monitoring machine parameters of a numerical controller, said method comprising:

  • performing a first operation of a numerical controller for machine parameters, comprising;

    calculating a first checksum of said machine parameters in a first processor;

    converting at least two of said machine parameters in a second processor into internal parameters of said second processor;

    calculating a second checksum based on said internal parameters in said second processor;

    transmitting said second checksum to said first processor;

    storing said first and second checksums in a memory;

    performing a second operation of said numerical controller, comprising;

    calculating a third checksum of said machine parameters in said first processor;

    calculating a fourth checksum of said internal parameters in said second processor;

    comparing said stored first checksum with said calculated third checksum;

    comparing said stored second checksum with said calculated fourth checksum; and

    wherein if at least one match is lacking during said comparing, then an error treatment is performed.

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