DataHub

Dashboard Issues

Empty widgets, stale data, or broken share links.

Symptoms

  • Widget shows no value or "empty"
  • Share link /share/:token returns error
  • Historical chart flat or missing

Checklist

  1. Tag path — widget tag path must exist and match UNS exactly (plant/machine/device/tag)
  2. Telemetry — confirm live value in UNS Explorer
  3. Time range — stat/timeseries/bar/timeline window includes data
  4. Share token — link not revoked; shared dashboard only exposes widget tag paths
  5. Public API host — share page uses same API origin as console

Widget types

Stat and gauge need one tag; timeseries, bar, and timeline support multiple tags with palette colors. Stat widgets also load history for the mini-sparkline (same window control as timeseries).