Appearance
History Table Widget
Last updated
A table of recent recorded values of one tag, newest at the top.
Settings
| Setting | Description | Default |
|---|---|---|
| Time Range | 15 minutes, 1 hour, 6 hours, 24 hours | 1 hour |
| Max Rows | How many rows to show | 20 |
| Refresh (ms) | How often the historian is queried again | 30000 |
Binding
Add a Tag binding. Only the first binding is used, and it must be a tag.
The tag must have history turned on. There is no "Record History" setting on the widget or the tag's subscription form: history is a per-tag switch in History → Configure Tags, or the History column in the device's Manage Tags. See Tag Historian.
Behavior
- Time is shown as time of day only, with no date — on a 24-hour range, 09:14 may be today or yesterday.
- Numbers are shown with two decimals; text values as they were recorded.
- A row is recorded only when the tag changes, so a steady tag can show few or no rows.
- The widget asks the historian for the newest 1,000 changes in the range and shows the latest Max Rows of those, newest at the top.
- "No history data" appears when history is off, nothing changed in the range, or the historian is unavailable.