Panasonic FPG Series Technical Manual page 188

Precautions Concerning the Operation and Programs FP∑ Positioning Unit
Example:
Before the power supply is turned OFF, the elapsed values of DT100 and DT101 are read, and when the
power supply is turned ON, the contents of DT100 and DT101 are written to the elapsed value area of
the unit, through DT102 and DT103.
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