# Referencing Historical Tags in Power Chart: Historian Splitter

**URL:** <https://forum.inductiveautomation.com/t/referencing-historical-tags-in-power-chart-historian-splitter/113074>\
**Category:** Ignition\
**Tags:** perspective, ignition83\
**Created:** [January 5, 2026, 4:29pm UTC](https://forum.inductiveautomation.com/t/referencing-historical-tags-in-power-chart-historian-splitter/113074 "2026-01-05T16:29:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Liam\_Dietrich](https://avatars.discourse-cdn.com/v4/letter/l/b5a626/32.png) [@Liam\_Dietrich](https://forum.inductiveautomation.com/u/Liam_Dietrich)\
**Post date:** [January 5, 2026, 4:29pm UTC](https://forum.inductiveautomation.com/t/referencing-historical-tags-in-power-chart-historian-splitter/113074/1 "2026-01-05T16:29:20Z")

</div>

**Version:** Ignition 8.3.x

**Info:** I am attempting to setup a splitter historian where the primary source is a Core Historian, and the secondary source is a SQL Historian. I then want to view the historical data in a Power Chart.

**Question: If I manually pass a historical tag source to the Power Chart, will it know when to reference the Core Historian vs the SQL Historian?**

I am currently using ‘ **sys** ’, instead of ‘ **drv** ’, in the historical path and this seems to work for values being stored in the core historian, but I am unsure if this is correct for the Splitter Historian. Any insight is appreciated, thanks.

**Example:**  
histprov:_{NAME\_OF\_SPLITTER}_:/sys:_{GATEWAY\_NAME}_:/prov:_{PROVIDER}_:/tag:_{TAG\_PATH}_