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Lost of PLC Program if Backup Battery is Not Replaced

FAQ No. FAQ00287

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Will a CS1-series Programmable Controller's program be lost if its backup battery is not replaced after its 5-year service life has expired?


The program will not be lost as long as the Programmable Controller's power supply does not go OFF.

The battery service life is 5 years, so replace the battery every 5 years to prevent problems such as electrolyte leakage.