Knowledgebase: Terminology
Posted by Squarell Technology on 09 December 2013 10:24 AM

The FMS (Fleet Management Systems) Interface is a standard interface to vehicle data of commercial vehicles.

The following data are broadcast at the FMS interface:

  • Vehicle improvement (all round)
  • Vehicle speed (wheel based)
  • Vehicle speed (from tachograph)
  • Clutch switch (on/off)
  • Brake switch (on/off)
  • Cruise control (on/off)
  • PTO (Status/Mode)
  • Accelerator pedal position (0–100%)
  • Total fuel used (litres since lifetime)
  • Fuel level (0–100%)
  • Engine speed
  • Gross axle weight rating (kg)
  • Total engine hours (h)
  • FMS-Standard software version (supported modes)
  • Vehicle identification number (ASCII)
  • Tachograph information
  • High-resolution vehicle distance
  • Service distance
  • Engine coolant temperature

The data are coded according to SAEJ1939.The repetition rate of the data is between 20 ms (e.g. engine speed) and 10 seconds (e.g. vehicle identification number).

The amount of data is dependent on the manufacturer and model of the vehicle and might be different. If some data are not available at the interface they are marked as not available.