| 摘要 |
PURPOSE:To enable to perform the remote test in which the terminal group is one set system quickly without interrupting the operation of the processor, by establishing the remote test path between the service processor and the terminal based on the diagnosis request signal from the central processing unit. CONSTITUTION:The two systems of the central processing units, 11 12 are connected to the terminal control unit 2 and a plurality of terminals 31-3n are connected to the control unit. Further, to the control unit 2, the service processor 41 collecting the status information of the terminals 31-3n is connected, and the control unit 2 is provided with the micro (mu) computer 21 connected to the units 11, 12 and the data lines 211, 212, and the mu computer 22 connected to the control lines 221, 222. Further, the mu computer assignment adjusting circuit 23 and the test loop forming circuit 24 are provided between the lines 212 and 222 to assign the computers 21, 22 based on the request of diagnosis from the units 11, 12, allowing to establish the test path between the units 11, 12 and the terminals 31-3n without interrupting the operation of the units 11, 12 via the gate circuit 28. |
