Omron NT631 Operation Manuals page 231

Programmable terminal

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System Maintenance

Checking the RUN LED

S If the buzzer functions correctly, it will sound continuously. At this time, the

"Buzzer Check" touch switch will be displayed in reverse video.

S To stop the buzzer while it is sounding, press the "Buzzer Check" touch switch

Check if the RUN LED functions normally.

Check the RUN LED by following the menu operation from the System Menu

shown below.

Select "Device Check".

Select "Buzzer Check".

Select "Maintenance Mode".

Select "I/O Check".

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