| 摘要 |
PROBLEM TO BE SOLVED: To easily specify a function module where power supply abnormality has occurred, in a duplex system which has a plurality of sets of duplex function modules. SOLUTION: ID preservers 16a and 16b are made to preserve different IDs. Power monitors 14a and 14b monitor the voltages of the power supplies 13a and 13b, and inform power supply abnormality judgment notice parts 17a and 17b of the voltage drop. Mounting condition notice parts 15a and 15b notify the power supply abnormality notice parts 17b and 17a of existence of mounting. The power supply abnormality judgment notice parts 17a and 17b send system buses 12a and 11b the signals of abnormality occurrence of the power supplies and IDs taken form the ID preservers 16a and 16b, when the are notified of the existence of mounting by the mounting condition notice parts 15b and 15a and besides the power monitors 14b and 14a notify them of power abnormality. |
