Reference · for Engineers
Data History
A dashboard item that shows how far each plant's stored history reaches, with the start date, values stored, assets and signals.
The Data History item shows how far back the stored data reaches, one card per group (plant, gateway or any other grouping), the deepest first.
- Header. The values stored in all.
- Card. The days from the first value to the latest, a bar against the deepest group, the date the history starts, the values stored and the signals and assets behind them.
Data fields
| Field | Kind |
|---|---|
| Group | Dimension |
| First value | Measure |
| Latest value | Measure |
| Values stored | Measure |
| Assets | Measure |
| Signals | Measure |
Group, First value and Latest value are required: bind the first value with the Min summary and the latest with Max. Values stored, Assets and Signals add their counts.
Where to see it
The Meridian demo plant uses it on Meridian · Data Platform Command Center.
Related
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