| 摘要 |
This invention relates to a numeric control machine tool which requires fewer signal lines between an operation panel and a numeric controller. Matrix devices (S111, S112, ...) are disposed in matrix in each of switch matrices (1, 2, ..., n). Common signals (COM1, COM2, ..., COMj) are sent to common lines COM of the switch matrices (1, 2, ..., n). Data signals (DAT11, DAT12, ..., DAT2l) are sent from data lines (DAT1, DAT2) of the switch matrices (1, 2, ..., n). Similarly, input data signals (DATn1, DATn2, ..., DATnm) are sent from the data lines (DATn) of the switch matrices (1, 2, ..., n). Since the common lines COM are provided to the switch matrices (1, 2, ..., n) in this way, unnecesary common lines can be eliminated. |
