What is a FMS Interface? A FMS interface is an electronics device to read the data from a vehicle data network and translate the data into standard FMS standard data. FMS interfaces have functions to:

• Act as a firewall, so the vehicle data network cannot be interfered
• Translate the proprietary vehicle signals into FMS standard
• Filter data, not all data is made available.

About FMS standard
The FMS standard is set of data defined by the Truck manufacturers. The list of 20 items is not sufficient to support full fleet management functions, and not all vehicles support the same set of data.

SS Tracking FMS interfaces.
In the SS Tracking FMS interfaces more data is made available for the advanced fleet management solutions. If data is not available SS Tracking routines calculate the missing values. The SS Tracking FMS interface incorporates SS Tracking CAN technology. This CAN technology protects the vehicle CANBUS against any interference. It has a read only port with special electronics. With the Connect & Go cabling and clear installation instructions the risk of incorrect installation is minimized. Instructions the risk of incorrect installation is minimized.

Identifier string – optional output field
The identifier string output field is an optional output field. It was introduced starting with firmware version 6.3. If no identifier string is parameterized the field is omitted. The string is user definable alphanumerical string with up to twenty characters. The string can be entered using the 'I' command.

Time – internal time information
The first line gives the time information in the format d-hh:mm:ss.ms. Milliseconds are givenwith three digits. Time measuring starts with 0-00:00:00.0 on powering up SS TRACKING FMS.Information for the day is incremented every 24 hours by one until 65535.

EngSpeed – engine speed
The second line shows the engine speed. Unit is rpm (rotations per minute), resolution is 0.125rpm.If you detect any problems reading the engine speed in a Daimler Sprinter please read chapter 4.16 to find solutions to avoid this problem.

Acc – accelerator pedal position
The third line shows the accelerator pedal position in % with a resolution of 0.4%.

TCO – tachograph information
Line 4 contains the information given by the tachograph. The first value is the speed information in km/h with a resolution of 1/256 km/h. The other information are:

Speed – wheel based speed
The line marked with speed shows the wheel based speed in km/h with a resolution of 1/256 km/h. It also shows information about clutch switch (CS), brake switch (BR) and cruise control (CC). For CS, BR and CC 0 means not pressed or inactive, 1 means pressed or active.If the Truck protocol is active (P=T) the state of the Power Take Off device (PTO) is also given. Concerning PTO state the FMS standard defines only the values 0(off/disabled), 5 (set)

and 31 (not available). SS TRACKING FMS interprets the received values according SAEJ1939-71 and output values between 0 and 19 as numerical values if the truck supports it.


SS Tracking FMS Interface
For values between 10 and 30 SS TRACKING FMS outputs 'o' and for the value 31 'n'.If the Bus protocol is active (P=B) the state of the parking brake is displayed instead of the PTO device. 0 means parking brake open, 1 means parking brake set.

Service – service distance
Service shows the service distance in km with a resolution of 5 km. The range is between-160635 and +160640 km. The service message is only supported in Truck FMS protcol.

Distance - vehicle distance
Distance shows the total vehicle distance in km with a resolution of 5 m.

EngHours - engine time
EngHours shows the total engine time in hours with a resolution of 0.05 h.

FuelC - fuel consumption
FuelC gives the accumulated fuel consumption in l (liter) with a resolution of 0.5 l.

Weight
The line 'Weight' gives the axle weights with the number of wheels per axle. The information is given for the number of axles defined in parameter 'axle count'. The axles are given in the order front to back. The weight is in kg with a resolution of 0.5 kg. Most truck manufacturers do not support the number of wheels. In these trucks SS TRACKING outputs 'n' (not supported).Axle weight messages are only supported with Truck protocol.

EngTemp - cooloing temperature
EngTemp gives the engine coolant temperature in degree Celsius with a resolution of 1 degree.

FuelL - fuel level FuelL shows the fuel level in % with a resolution of 0.4%.

VehID - vehicle ID
VehId shows the identification string of the vehicle. According to SAE J1939-71 ASCII strings are terminated by the character '*'. SS TRACKING FMS doesn't output the character '*'.

FMS – FMS version
This line shows the version of the implemented FMS standard in the form vv.rr where vv is the two digit version number and rr is the two digit revision number. Diag announces if the FMS implementation supports diagnostic messages, Requ announces if the implementation supports requests.

Gear – transmission information
This information is only supported in Bus protocol. The selected (S) and current (C) gear are shown. Negative values are reverse gears, the value 0 means neutral and a value of 126 means park position.

DoorControl1
DC1 gives an information about the status of the doors. The value after P shows the position state, R is the ramp state and S the overall state (see table).

DoorControl2
This information is only supported in Bus protocol. The message shows the states of 10 doors. For every door 3

These values are given for every door as a character string with 3 characters in the order LOE. For example
DC2 loe 1:100 2:100 3:100 4:100 5:nnn 6:nnn 7:nnn 8:nnn 9:nnn 10:nnn
means that 4 doors are present and all 4 doors are 'locked', 'closed' and 'disabled'.

AirSuspension
This information is only supported in Bus protocol. The message supports the air suspension pressure with the 4 bellow pressure values front axle left (FAL), front axle right (FAR, rear axle left (RAR) and rear axle right (RAR). The pressure are given in kPa with a resolution of 0.1 kPa.

AirSupply
This information is only supported in Bus protocol. It gives the air pressure values of the two service brakes. The vaklues are given in kPa with a resolutions of 8 kPa.

Alternator
This message shows the states of up to 4 alternators. A value of '0' means alternator is not charging, '1' means alternator is charging. This information is only supported in Bus protocol.

TimeDate

• Information about date and time. The output string is formatted as yyyy.mm.dd-hh:mm:ss where
• yyyy 4 digit year number
• mm 2 digit month number
• tt 2 digit day number
• hh 2 digit hour (24 h format)
• mm 2 digit minute
• ss 2 digit second
• This information is only supported in Bus protocol.