Some variables are missing a value right after midnight.

SYMPTOM

Some variables are missing a value right after midnight.

CAUSE

At midnight all variable are set to null (no value). And the first time the device reports the value you can also see them in Track History.

You have this effect on trackers that do no send up all variables in each report. For example Queclink and Wireless Links. Most trackers do send all variables in each message, and do not have this effect.

SOLUTION

Enable "Save emulated first message of day" for the Device Type in SiteAdmin.

  1. Login to SiteAdmin
  2. Go to Devices
  3. Go to Types (left menu)
  4. Select Device Type
  5. Set "Save emulated first message of day"
  6. Save

New track will from now on start with the last known variable value from last day.