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FAQ04621 of Machine Automation Controllers FAQ

FAQ No. FAQ04621

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If I want to run an NJ-series Controller without a battery, can I disable detection of the Low Battery Error, like I can in the Programmable Controller system settings for the CS Series and CJ Series?


No, the NJ-series Controllers are designed to always detect the Low Battery error. When this error occurs, the _RetainFail (Retention Failure Flag) system-defined variable changes to TRUE, and the ERROR indicator on the front panel of the CPU Unit flashes.