Method and circuit configuration for monitoring machine parameters
AssigneeDr. Johannes Heidenhain GmbH
InventorNorbert Kerner
Life of this patent
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Abstract
A circuit configuration for monitoring machine parameters of a numerical controller for a machine tool where the circuit configuration includes a first processor calculating a first checksum and a third checksum, a first memory assigned to the first processor and has a bidirectional connection with the first processor, wherein the first memory stores machine parameters, a second processor calculating a second checksum and a fourth checksum, a second memory that has a bidirectional connection with the first processor and the second processor and a comparator connected to the first and second memories and the first and second processors, the comparator comparing the first and third checksums with one another and the second and fourth checksums with one another.
Claims15
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.
A method for monitoring machine parameters of a numerical controller, said method comprising:
- performing a setup operation of a numerical controller for machine parameters, comprising:
- storing machine parameters in a memory assigned to a first processor;
- calculating a first checksum of said machine parameters in said 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 in said second processor based on at least said internal parameters of said second processor;
- transmitting said second checksum to said first processor;
- and
- storing said first and second checksums in said memory.
A circuit configuration for monitoring machine parameters of a numerical controller for a machine tool, said circuit configuration comprising:
- a first processor calculating a first checksum and a third checksum;
- a first memory assigned to said first processor and has a bidirectional connection with said first processor, wherein said first memory stores machine parameters;
- a second processor calculating a second checksum and a fourth checksum;
- a second memory that has a bidirectional connection with said first processor and said second processor;
- and
- a comparator connected to said first and second memories and said first and second processors, said comparator comparing said first and third checksums with one another and said second and fourth checksums with one another.
Dependencies are inferred from the claim text.