| 摘要 |
PURPOSE:To have the flexible priority on control of a file device, by constituting a file controller containing a priority setting means and a priority device selecting means. CONSTITUTION:The file device number and the priority are sent to a priority setting means 200 from an upper device via a line 300. Then the means 200 stores the priority given to each file device, and at the same time the priority is sent to a priority device selecting means 201 via a line 302. Then the start signal and the file device number are delivered from an upper device via a line 301. Otherwise the end signal of mechanical operation is delivered from each file via a line 303. In such a case, the means 201 refers to the priority given via line 302 to selects the file device number of the highest priority among the file devices started through the line 301 and the file devices transmitted the end signals through the line 303. This selected file device number is sent to a file control means 202 via a line 304. Then a prescribed control operation is carried out. |
