| 摘要 |
PURPOSE:To improve the efficiency of a system without using restoring operation to an original point by previously storing a start-up program in a nonvolatile memory of an NC device and executing the program when a power supply of the system is turned on. CONSTITUTION:The NC device system is constituted of an NC device 101, a machine tool 102, a power supply device 103, and a switching means 104, a start- up NC program including at least an instruction for restoring operation to the original point is previously stored in a memory PM of the NC device 101 and a timer TM for generating a switch-enable signal at a setting time if formed in the machine tool 102. If a power supply ON time is set in the timer TM, a switch enable signal is generated from the timer TM and the switching means 104 applies a voltage from the power supply device 103 to the NC device 101 and the machine tool 102. Then, a CPU in the NC device reads out the start- up program from the memory PM to execute the restoring operation to the original point or the like. |
