| 摘要 |
PURPOSE:To separate easily a fault by providing an artificial input/output controller which can imitate the action of an input/output controller, into a channel controller. CONSTITUTION:A central controller designates an artificial input/output controller PIOC to send the prescribed diagnosis data after detecting a fault. Thus the PIOC detects that it is designated by an address selecting circuit 1 and then processes the diagnosis data, etc. While a fault signal is sent to an input/output controller IOC connected to a common bus CB by the function of a false normal control circuit 5 to secure a false normal action. At the same time, a receiver driver circuit 3 is controlled to separate the bus CB and only the PIOC can be actuated. Then the fault of the bus CB can be separated for detection.
|
