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garciaronaldSep 23, 2025
What does '[Calendar Data Error]' mean on Omron NT31 and how can I fix it?
- BBrent VelasquezSep 23, 2025
The '[Calendar Data Error]' message on your Omron Touch terminals indicates an error in the date/time values, possibly due to low battery voltage. Check the battery voltage by checking the color of the RUN LED and with the battery check in the System Menu; if the voltage is low, replace the battery with a new one. If the battery voltage is normal, set the calendar clock correctly from the System Menu.