| 摘要 |
PURPOSE:To decrease the data transfer time, by direct data transfer among terminal stations. CONSTITUTION:In the data transfer among processors 2n1 having each high level data link control circuit 2n0, the master station selecting circuit 300 selects one terminal station transmitting the data link usage request signal among all the terminal stations, and the selected terminal station performs operation with a data link usage permission signal from the master station selection circuit and changes the fixed address to an upper rank address. Thus, the terminal station is changed into the master station. |
