| 摘要 |
<p>A numerical control device which has a switching circuit (301) for selectively connecting an external device (IOC), a program production unit (TPC) or a mechanical controller (NCC), thereby enabling the preservation of a machining program in the external device (IOC). A first processor (101) in the program production unit (TPC) produces a machining program in accordance with data input through input means (104) and stores the program in a first memory (103). A second processor (210) in the controller (NCC) numerically controls a working machine (MAC) based on the contents of a second memory (203) which stores the machining program transferred from the first memory (103). The switching circuit (301) is provided between the program production unit (TPC) and the controller (NCC) to enable data transfer between both of them and the external device (IOC).</p> |
