Error logging for automatic apparatus
First Claim
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1. In a control system having means for supplying command signals to initiate system functions and means for producing error signals indicating system malfunctions, the combination comprising:
- means responsive to said command signals for producing a control signal after a certain number of command signals have been supplied;
error counter means responsive to said error signals for storing a count value representing the number of error signals which have occurred;
sensing means responsive to said error counter means for producing a value signal when said error counter means is storing a value not less than a predetermined value; and
exception counter means responsive to the value signal and said control signal for incrementing said exception counter means by said control signal if said value signal is present and resetting said exception counter means by said control signal if said value signal is not present.
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Abstract
Method and apparatus for improved error logging by integrating errors over a given number of operations that provides long memory and fast recovery. Errors integrated over a selected number of associated operations are compared to a criterion. An exception is logged each time the number of errors is not less than the criterion but if the number of errors is less than the criterion, the exception log is cleared.
89 Citations
4 Claims
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1. In a control system having means for supplying command signals to initiate system functions and means for producing error signals indicating system malfunctions, the combination comprising:
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means responsive to said command signals for producing a control signal after a certain number of command signals have been supplied; error counter means responsive to said error signals for storing a count value representing the number of error signals which have occurred; sensing means responsive to said error counter means for producing a value signal when said error counter means is storing a value not less than a predetermined value; and exception counter means responsive to the value signal and said control signal for incrementing said exception counter means by said control signal if said value signal is present and resetting said exception counter means by said control signal if said value signal is not present. - View Dependent Claims (2, 3, 4)
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Specification