Chapter 11 Datalog Function
11.3.9 Files Backup Cycle
Data collected by datalog are not directly saved into the SD memory. They are saved into the designated buffer, and
later saved in to the SD memory when a certain volume (4Kbyte) has been collected. When the data save interval is
long and the volume of data to collect is not large, it takes a lot of time to save data into the SD memory. If collected
data are saved only in the buffer before sudden shutoff or reset occurs, the saved data are all lost.
To prevent this, the collected data need to be saved into the data at certain intervals regardless of the storage. The
data saved into the SD memory is not lost even in case of sudden power change. Backup time can be set at from 1 to 5
seconds. However, setting too short backup time may affect datalog performance.
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