Archiving Methods

Frequency based - data is saved at a predefined frequency we use monitors for frequencies that are less than every 2 second slower channels are fetched using “ca_get”

Monitor based - data is saved on change typically the ADEL field determines a significant change an ADEL of 0 records every change an ADEL of -1 records every time the record is scanned

Demand - data is saved on a request from the operator

Trigger - data is saved when some other channel changes

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