Switched PRO2 – User Guide
Using the Web Interface • 86
How Does the Trending Feature Work?
Each time a measurement is taken on the PRO2 unit, the measurement is aggregated into the metrics for the
current day. The aggregation process includes updating the maximum and minimum values for each measurement,
as well as updating the average with the new measurement.
Any measurements that have no current or are turned off will not be aggregated; this means the “in-use average”
metric will be the reported metric.
Each day’s worth of data will be stored in flash memory with a timestamp for use in generating a trending report.
Only data from the last 8 days is kept. The report is not stored in flash memory but is regenerated into RAM after a
system reboot.
If there is no data set that is 8 days old (1 week ago) for comparison, the trending data will indicate 100% increase
for all reported trending data.
If the system is updated or units are moved/changed/removed/added, all trending will be restarted. In the event of
communication loss to link units, trending data will not be lost.
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