| 摘要 |
<p>Improvement in a numerical control unit loading system in which a control program stored in a non-volatile memory is transferred into a RAM provided on the system side. When using a micro processor with an internal ROM for load-sharing with a main processor, a loading program is stored in empty regions of the internal ROM to simplify the circuit construction and reduce the hardware cost. When the numerical control unit is activated, the main processor (10) reads out the loading-program stored in ROM (61) in sub-processor (60) and stores it in RAM (40). The transferred loading-program is executed in the main processor, transferring the control program stored in non-volatile memory (30) into RAM (40), and thus finishing loading. </p> |
