Fleet management system (FMS)
The mission of the six major European truck manufacturers was the creation of a standard to make the surveillance of a fleet over the internet possible. The main problem was the mixture of trucks from different manufacturers in a fleet. FMS can be seen as an interface between truck and internet data transmission.
FMS uses a physical layer according to ISO 11898-2 (250 kbit/s), an application layer according to SAE J1939/71 and a data link layer according to SAE J1939/21. The physical connectors are not yet standardized.
The FMS standard interface provides the following parameters:
| Name | Format |
| Vehicle speed (wheel based) | km/h |
| Cruise control status | on/off |
| Clutch switch | on/off |
| PTO status | on/off |
| Accelerator pedal position | 0-100% |
| Total fuel used | Liter |
| Fuel level | 0 -100% |
| Engine speed | RPM |
| Brake switch | on/off |
| Axle location | pos. no. |
| Truck axle weight | kg |
| Total engine hours | h |
| Vehicle identification number | ASCII |
| High resolution total vehicle distance | km |
| Next regular maintenance | km |
| Tacho information | ----- |
| Tachograph vehicle speed | km/h |
| Engine coolant temperature | °C |
Further information can be downloaded after a free registration at:
http://www.fms-standard.com/