Template:FMx650 TrailerCAN

This pages describes the TrailerCAN feature and gives related information.

Introduction

The Electronic Braking System (EBS) modulator is a key component in a trailer’s braking system. It not only controls braking performance but also ensures seamless communication with the connected truck. The global EBS modulator market is dominated by WABCO, Knorr-Bremse, and Haldex, each integrated into a wide variety of trailer types, including curtain siders, reefers, and flatbeds for numerous trailer manufacturers.

Because trucks, trailers, and EBS modulators are manufactured by different companies, ECE Regulation No. 13 and ISO 11992 global standards were introduced to ensure full compatibility. This standard is regularly updated and allows for smooth coupling between any truck and trailer, regardless of brand. It also standardizes data exchange and communication, making mixed-fleet integration much easier worldwide.

{{{model}}}, with its TrailerCAN feature, reads trailer data via CAN bus based on standardized regulations and provides it through I/O elements, enabling seamless integration with any fleet management platform. {{{model}}} is a powerful and versatile device that can gather trailer CAN data from multiple sources:

• Directly from the truck
• Straight from the EBS modulator
• Via the trailer socket

Truck and Trailer Coupling

Coupling of the towing truck and towed trailer is done according to ECE Regulation No. 13 and ISO 11992 standard.

CAN data between towing and towed vehicles is exchanged via the ISO 7638 7-pin socket.

• 
  Coupling example (© Erich Jaeger)
• 
  Socket example (© Erich Jaeger)

ISO 7638 7-pin socket pinout

#	Function	Color
1	Plus electrovalve	Red
2	Plus electronics	Black
3	Minus electronics	Yellow
4	Minus electrovalve	Brown
5	Warning device control (normally open)	White
6	CAN_H	White/green
7	CAN_L	White/brown

Physical Connection Options

1. {{{model}}} reading trailer data via the truck:

{{{model}}} is designed to read a coupled trailer‘s data from the truck itself. A connection can be made using the Teltonika ECAN02 adapter to avoid damaging wires or voiding the warranty. Connection schemes for different manufacturers, generations, and truck model years are in progress. You can contact our support team to get the guidelines for your specific truck.

Example:

• 
  TrailerCAN connection to truck
• 
  TrailerCAN connection to truck - Configurator

2. Direct connection to the EBS modulator:

{{{model}}} can be connected directly to the EBS modulator’s diagnostic line or another CAN line using a specific OEM cable from the manufacturer. Connection instructions and part numbers for OEM cables are being developed.

Example:

• 
  TrailerCAN connection to EBS (1)
• 
  TrailerCAN connection to EBS (2)
• 

3. Connection via the ISO 7638 7-pin socket:

The ISO 7638 7-pin socket can be used as a data source. Pins 6 and 7 are used for CAN data exchange between the truck and trailer, to which {{{model}}} CAN lines can be connected. Power supply can be taken from Pins 2 and 3.

Device Configuration

Currently, firmware version 03.01.01.Rev.03 can be used for trailer data reading, with the B.FMX6_R.167 configurator version to set up the device. Different truck manufacturers have different connection locations—baud rates may vary depending on the vehicle model.

• 
  Configurator: CAN \ Tachograph settings
• 
  Configurator: TrailerCAN settings

AVL ID List

AVL ID List for TrailerCAN

AVL ID	Property Name
13651	Detected towed vehicle
13652	Trailer wheel based speed
13653	ABS status
13654	Retarder control status
13655	Red warning signal request
13656	Amber warning signal request
13657	Axle load sum
13658	Retarder wheel torque reference
13659	Service brake status
13660	Electrical supply status
13661	Vehicle type
13662	Axle load measured by towed vehicle
13663	Axle load measured by external scale
13664	Calibration data load level
13665 - 13670	Brake cylinder pressure of each wheel
13671	Trailer VIN**
13672	VDC active
13673	Lateral acceleration
13674	Loading ramp approach assistance status
13675	Supply line braking
13676	Stop lamps request
13677	Braking via electric control line support
13678	ROP system status
13679	YC system status
13680	Traction help status
13681	Lift axle 1 position status
13682	Lift axle 2 position status
13683	Steering axle locking status
13684 - 13698	Each wheel tire pressure status*
13699 - 13713	Each wheel tire pressure*
13714 - 13728	Each wheel brake lining status*
13729 - 13743	Each wheel brake lining*
13744 - 13758	Each wheel brake temperature status*
13759 - 13773	Each wheel brake temperature
13774	Vehicle pneumatic supply status
13775 - 13789	Each wheel air leakage detection*
13790 - 13804	Each tire temperature*
13805	Automatic towed vehicle braking status
13806	Electrical supply of non-braking system status
13807	Spring brake installation status
13808	Electrical load proportional function installation status
13809	Spring brake status
13810	Pneumatic supply pressure

(*) Some parameters might not be available if the trailer is not fitted with a TPMS system or the required sensors.

(**) The trailer can provide the full VIN number, or only a partial one (equipment number/chassis number/serial number).

VIN example 1

VIN example 2