| 摘要 |
PURPOSE:To shorten hit time of a signal synchronizing with the switching of a switch by containing dummy data in data processed by a controller. CONSTITUTION:A central controller 1 prepares the uniform number of tables held with subcontrollers 2-4 by inputting the dummy data to the data instructed to the subcontrollers 2-4, and performs such control that time receiving the data by the subcontrollers 2-4 can be set at the same time is applied. Therefore, the data processing time of each of the subcontrollers 2-4 can be set at the same time, which enables the switching of the switch to be synchronized. At this time, by displaying the fact that the data is the dummy data in the pattern of data or attaching an identifier on the dummy data, it can be discriminated from connection data. In such a way, the hit time of the signal in the whole multistage switches can be shortened, and also, uniform hit time can be always maintained in spite of the constitution of the data. |
