NUMERICAL CONTROL SYSTEM WHICH DISPLAYS VOLTAGE VALUE OF BACKUP BATTERY

摘要

A numerical control system includes a numerical controller, an absolute encoder which detects a rotational displacement of a motor controlled by the numerical controller, batteries each of which supplies backup power to at least one of the numerical controller and the absolute encoder, A/D conversion circuits which analog/digital-convert voltages output from the batteries and output digital signals, the A/D conversion circuits being located in one device selected from the numerical controller and the absolute encoder and supplied with a backup voltage by the battery, and a display which displays the voltage values of the batteries on the basis of the above-mentioned digital signals and is located in the numerical controller.

主权项

1. A numerical control system comprising:
a numerical controller; an absolute encoder which detects a rotational displacement of a motor controlled by the numerical controller; a battery which supplies backup power to at least one device selected from the numerical controller and the absolute encoder; an A/D conversion circuit which analog/digital-converts a voltage output from the battery and outputs a digital signal, the A/D conversion circuit being located in the one device selected from the numerical controller and the absolute encoder which one device is supplied with a backup voltage by the battery; and a display which displays a voltage value of the battery on the basis of the digital signal and is located in the numerical controller.