| 摘要 |
When an abnormality detecting means 41 has detected an abnormal state of a system, an abnormal position determining means 42 determines the abnormal position in accordance with the received total address. Then, an degree-of-importance determining means determines whether or not a degree of importance exists. If the degree of importance exists, a process is performed in accordance with the degree of importance. An icon display means 45 displays a plurality of icons. A link-line display means 46 displays a link line indicating the connection between the icons. An abnormal-state alarm output means 44 determines the status to change the display in accordance with the contents of the status so as to display the changed display. The actual display is performed by a display means 48. If necessary, output to an alarm sound producing means 49 is performed.
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