| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily perform extension and exchange without dropping the power source of host by providing a monitoring function. SOLUTION: A command is periodically issued to a device 12 connected to a host 11 and based on data returned from the device 12, the state of the device 12 is diagnosed. First of all, the ON/OFF of power source is confirmed and at the time of OFF, the OFF of power source is reported to the side of host 11. In the case of ON, it is confirmed whether the configuration of device is changed or not and when there is no change, it is confirmed whether the device 12 is set in a ready state or a standby state. At the time of standby state, the standby state is reported to an operator, etc. At the time of ready state, setting is compared before and after the change and when the setting is not changed, the ready state is reported to the side of host 11. The operator, etc., can recognize the state of device before JOB start. Besides, when the setting is changed, setting before the change is provided.</p> |
