| 摘要 |
PURPOSE:To prevent the decrease in transmission efficiency by eliminating a defective frame being left unreceived by a data processor on a loop bus. CONSTITUTION:Suppose that a fault occurs in a data processor B7 connected to the loop bus 1 and a frame transmitted from other data processors to the data processor B7 is left unreceived on the loop bus 1. In this case, a data processor A2 changes the own address value into an address value of the data processor B7 temporarily. Thus, the defective frame left on the loop bus 1 is eliminated and the interference of the defective frame on normal frames is prevented. |
