I have a large number of tags with historization configured on them. One such tag is with OnChange polling configured as follows.
When configured like this, the Minimum Age limit (set to 15 seconds) is not respected:
You can see the time between samples is often <15 seconds. However, when I set the Deadband mode to Off, the samples are consistent:
As far as I understand in the manual, the samples should only log when both the deadband criteria and minimum sampling time are respected, but it seems that the samples are logged as soon as the deadband limit of 10 is surpassed.