| 摘要 |
PURPOSE:To prevent required fault notification from being abandonned by stopping the fault notification from a slave monitor system at a much lower level before reaching the performance limit of a host monitor system. CONSTITUTION:When a fault is generated at a monitor object device 31-1, the fault is notified from a slave monitor system 20-2 to a host monitor system 10 and the fault is notified from a slave monitor system 20-1 to the host monitor system 10 as the faults of all monitor object devices 30-1-30-3, 30-6, 30-7 and 30-10 multiplexed at the monitor object device 31-1. At such a time, before reaching the limit of a number for the fault notification to be received in unit time (1 second), the host monitor system 10 instructs the stop of the fault notification to the low-order slave monitor system 20-1, for example. Even when there is no fault notification for fixed time, the restart of the fault notification is requested to the slave monitor system at the most significant level currently under stopping. |
