Historian Functions
- Updated2025-07-28
- 1 minute(s) read
Historian Functions
Retain historical tag values to review, troubleshoot, or analyze data over time.
Use tags to read and write data values between systems and SystemLink Server.
Defines the range of historical tag values to read with Read Tag History or Multi Read Tag History.
Defines how long a tag retains historical values.
Returns the historical values from multiple tags in a single operation.
Returns the historical values from a single tag. The data type of the tag must match the polymorphic instance.
G, HTTP, Python, and .NET APIs allow you to programmatically access SystemLink data services outside of NI SystemLink Web Application.
Use SystemLink nodes in NXG or G Web Development Software to communicate data between your test and measurement systems and your SystemLink Server account.
Use tags to read and write data values between systems and SystemLink Server.