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All historic data will be written to the tag using the timestamp associated with the historical data.

Note

When Max Time Between Samples is greater than 0, inserts

to the Storage Provider

at this sample time are not honored during historical data flushes because the tag updates for historical data occur too quickly.

See example for this configuration

For example the Max Time Between Samples is 5 Seconds. Whilst the edge node is offline, the edge node tag has updates every 10 seconds. On reconnect, all these historical change events are published and written to the MQTT Engine tag within milliseconds. As a result the Max Time Between Samples does not trigger.

Edge Client 

If you are not using reference tags, the Edge side client must publish historic data in-order (synchronously) before live data resumes. This is because Ignition will ignore writes to the tag if the timestamp on the tag change is older that the current value.

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