Functionality of the internal data memory

Structure	Circular buffer
Total size	61.672 measurement cycles
Number of sectors	8
Sector size	7709 measurement cycles

The internal data memory of the myDatalogEASY IoT ATEX is designed as a circular buffer with 8 sectors. If the maximum number of data records (61.672 ) is achieved, the sector with the oldest data is deleted fully before new data can be saved in this sector again. This means that the internal data memory at the very least contains the measurement values of the last 53.963 cycles, however at most the measurement values of the last 61.672 cycles.

For this reason, it is recommended to coordinate the transmission cycle and record interval in such a way that a maximum of 53.963 measurement cycles have to be recorded between two transmissions. Note, that if the measurement cycle is shorter than the record interval, the record interval still has to be used for the calculation. In this case, the reason for this is that although the measurement is completed in the measurement cycle, the determined data is saved in the data memory in the record interval. If it can be expected that individual transmissions fail due to poor network coverage or an alternative record interval is activated via the trigger, this must also be taken into consideration when calculating the measurement cycles that are to be saved.