| 摘要 |
<p>PROBLEM TO BE SOLVED: To permit all host controllers to conduct an interface test by sequentially transmitting interface diagnosis function commands to the host controllers and conducting the interface test with a device being a diagnosis object. SOLUTION: The device state management means 11 of a main controller 1 manages the device states of the plural host controllers 2a-2c and function test devices 3a and 3b. A diagnosis object specification means 12 detects the function test, device which is not in an operation possible state between the function test devices 3a and 3b. When one is specified as the diagnosis object device, a device state judgment means 13 judges whether the respective host controllers to which the specified diagnosis object device is connected are in an operation possible state or not among the host controllers 2a-2c by referring to the device state management means 11. The interface diagnosis function commands are sequentially transmitted to all the controllers that a first command transmission means 14 judges to be in the operation possible state, and conducts the interface test with the diagnosis object device.</p> |
