| 摘要 |
An elevator controller in which a power supply voltage being fed to a processing section is monitored by a power supply voltage monitor circuit. A voltage monitor integrity check function circuit outputs a monitoring input voltage forced alteration signal for forcibly altering a power supply voltag e being inputted to the power supply voltage monitor circuit in response to a control signal from the processing section. A voltage abnormality detection signal from the power supply voltage monitor circuit is also inputted to the voltage monitor integrity check function circuit. The processing section performs integrity check of the power supply voltage monitor circuit by reading data held in the voltage monitor integrity check function circuit.</ SDOAB>
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