NUMERICAL CONTROLLER

摘要

If a numerical controller detects abnormality of data when data stored in a volatile memory is read out in backup of the data stored in the volatile memory to an external memory, the numerical controller compares an address of an abnormal data, which is detected, with an address stored in a non-volatile memory. When it is determined that the abnormal data which is detected is data of an invalid area, the numerical controller continues the backup processing.

主权项

1. A numerical controller which is capable of backing up data stored in a volatile memory to an external memory via an interface, the numerical controller comprising:
a non-volatile memory which stores an address of a valid data areas in the volatile memory; a detection circuit which detects abnormality of data when data stored in the volatile memory is read out; and a backup processing continuance unit which compares, when the detection circuit detected abnormal data, an address of the abnormal data with an address stored in the non-volatile memory so as to determine whether the abnormal data is data in a valid data area or data in an invalid data area, and continues backup processing if the detected abnormal data is data in an invalid data area.