| 摘要 |
<p>PURPOSE:To prevent a signal processing system from being lowered at its service by automatically disconnecting a signal processor generating abnormality in its power supply from a bus. CONSTITUTION:When a monitoring/testing device 10 detects abnormality in a power supply for a signal processor 10 and outputs an OS signal and an SAB signal to the signal processor 10, a relay RL 20 is also excited together with a relay RL 10 and both contacts r110, r120 are turned on. Consequently, answer data ASW for instructing bus disconnection is automatically outputted from a NAND gate NGO to a central processor 15 through a bus without waiting the operator's ON operation of a bus disconnecting switch BISO, so that the signal processor 10 is disconnected from the bus. Thereby, the generation of noise in a period up to the switching of the bus can be prevented.</p> |
