| 摘要 |
<p>A numerical controller such that the causes of system stop due to abnormality in the communication of error detecting or error correcting system are easily found and the measure to be taken to eliminate the causes is easily examined. In the numerical controller which performs communication by using error detecting codes or error correcting codes, a monitoring means monitors and outputs the name of communication line through which an error is detected in the data received or an error in the data received is corrected, the number of occurrences of communication impossibility and the times at which the communication impossibilities occur. An error detecting and corrected-state storing means stores information from the monitoring means by observing the information for every communication line and outputs the information representing the error detection and the corrected state. A displaying means displays the information outputted from the error detecting and corrected-state storing means in accordance with the command given by the operator.</p> |
