Hello TrendMiner Support Team,
We would like to request guidance regarding trend interpolation/display options for analog tags.
Environment
- TrendMiner Version: 2026.R1.0-11
- Data Source: AVEVA Historian
- Tag Name: DMO_SIC1850.Speed
- Tag Type: Analog
Description
The tag DMO_SIC1850.Speed is an actual machine speed feedback signal coming from the inverter through PLC and stored in AVEVA Historian.
When viewed in TrendMiner, the signal is displayed using linear interpolation, resulting in a triangular trend pattern between recorded values.
However, when the same tag is viewed in AVEVA Historian Trend Client, we are able to configure the display style as "Stair Step", which more accurately represents the process behavior.
Questions
1. Does TrendMiner support Stair Step visualization for analog tags?
2. Is there any display setting available in TrendHub to switch from Linear interpolation to Stair Step interpolation?
3. If this is not available in TrendHub, what is the recommended workaround?
4. Can this be achieved through Tag Builder, Formula Tags, or datasource configuration?
5. Is this limitation related to TrendMiner visualization or AVEVA Historian retrieval settings?
Expected Result
Ability to display the analog tag in TrendMiner using Stair Step visualization similar to AVEVA Historian Trend Client.
Actual Result
TrendMiner displays the trend using linear interpolation only.
Please advise on the recommended solution and best practice.
Thank you.
