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AssigneeFanuc Corporation
InventorsTakahiko ENDO, Akira Egashira
Estimating the term…
During path table operation, date and time information at sampling, the value of the reference signal, the position of an axis controlled in synchronization with the reference signal, and information on the state of the numerical controller are stored, for each predetermined sampling cycle, in buffer as operating history information. The operating history information stored in buffer is then transferred in operating history saving memory when an alarm is generated, and then displayed on a display device. By displaying operating history in this way, the location of the data instructed in path table operation, the state of the numerical controller and the position of the control axis when an alarm is generated can be specified.
A numerical controller that stores a value of a reference signal of a variable value and a position of a control axis conforming to the reference signal value in memory as a path table in order to drive-control the control axis in synchronization with the reference signal and that performs path table operation based on the data stored in the path table to drive-control the control axis in synchronization with the reference signal, the numerical controller comprising:
Dependencies are inferred from the claim text.