摘要:
A numerical control device having a non-volatile, large-capacity magnetic bubble memory and a volatile, high-speed integrated circuit memory as memories for storing machining program data. Machining program data which has been stored in the magnetic bubble memory is transferred to and stored in the integrated circuit memory through an interface circuit by introducing power from a power source, the interface circuit functioning to administer the transfer of the data between both of the memories. Numerical control processing is executed by allowing a processor to access the integrated circuit memory.
摘要:
A numerical controller designed to reduce a wait time between power turn-on and machine activation. When power to the numerical controller is turned on, programs of additional functions are each selected to be either transferred or not. The selection is made by setting each of the programs of the additional functions either to be transferred or not on a display screen or by an external input signal inputted from a machine operation panel or the like. Only the selected system programs of the additional functions are transferred from the nonvolatile memory to the volatile memory. At the time of the power turn-on of the numerical controller, only the system programs of the additional functions to be used at the moment are transferred. The data to be transferred from the nonvolatile memory to the volatile memory is thus reduced, and the transfer time is shortened. Consequently, the wait time between power turn-on and machine activation is reduced.
摘要:
A utility program backup apparatus includes an erasable and programable read-only-memory, a ROM writer, first and second processing units, first and second memories, first and second interfaces a servo control part, a keyboard and a display. The apparatus enables an operator to shorten data recordation and reproduction time, while reducing an error rate of recordation and reproduction.
摘要:
A method and system for rewriting data in a non-volatile memory of the type which requires a comparatively long period of time for the rewriting of stored data. The occurrence of an interruption in power can be detected on the basis of the content of the non-volatile memory, and detection takes place after the resumption of power even if the interruption in power takes place during the rewriting operation. The non-volatile memory is provided with a flag area in which information indicating the initiation of a modification is written prior to the rewriting operation, and in which information indicating the termination of a modification is written after the rewriting operation, whereby an interruption in power which has occurred during rewriting is readily detected by reading out the information from the flag area after the restoration of power.