ⓘ Fleet Management System

                                     

ⓘ Fleet Management System

The Fleet Management Systems Interface is a standard interface to vehicle data of commercial vehicles. The six European manufacturers Daimler AG, MAN AG, Scania, Volvo, DAF Trucks and IVECO developed the so-called FMS-Standard in 2002 to make manufacturer-independent applications for telematics possible.

The following data are broadcast at the FMS interface:

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

The data are coded according to SAE J1939. The repetition rate of the data is between 20 ms e.g. engine speed and 10 seconds e.g. vehicle identification number.

With the FMS standard it is now possible to have manufacturer independent applications and evaluations of the data.

According to a note from the truck manufacturers, the FMS standard is seen as a worldwide standard. A direct connection to the internal vehicle bus system is not permitted by the truck manufacturers and could lead to the loss of warranty. Meanwhile, some manufacturers are quite restrictive in their workshops and cut all unknown connections to the internal bus system.

According to ACEA ca. 160.000 vehicles were fitted with an FMS standard interface in 2007. By 2019, more than 400.000 trucks use FMS in North America.

The FMS-Standard was also the base for the Bus-FMS-Standard for buses and coaches which was published in the year 2004.