Tag history timestamp source

Does ignition 8 have a way to change the timestamp source for tag history like in 7.9?


Nope, this option was removed, but is instead determined by the actual sample mode. OnChange and Periodic uses “value” source, while Tag Group uses “system” source.

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I have try this in Ignition 8.
both modes , On change and Periodic, its the same, Timestamp is generated from server on reception tag!! Why?
I need to store timestamp from device!!