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Battery Replacement
• Be sure to install a replacement Battery within two years of the production date shown on the Battery
label.
• Turn ON the power after replacing the Battery for a CPU Unit that has been unused for a long time.
Leaving the CPU Unit unused again without turning ON the power even once after the Battery is
replaced may result in a shorter Battery life.
• When you replace the Battery, use the CJ1W-BAT01 Battery Set.
SD Memory Cards
• Insert the SD Memory Card all the way.
• Do not turn OFF the power supply to the Controller during SD Memory Card access. The files may be
corrupted.
If there is a corrupted file in the SD Memory Card, the file is automatically deleted by the restoration
function when the power supply is turned ON.
CJ-series High-speed Counter Units Operation Manual for NJ-series CPU Unit(W492)
Precautions for Correct Use
29
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