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Features: ECUtalk enables the user to:

Retrieve information from the ECU: - General - Error status - Configuration

Change the ECUs configuration Check System components Carry out EOL tests Generate Load Sensing data plates Generate EOL test and Error Reports

Disclaimer The information contained in this document is intended for the exclusive use of trained persons within the commercial vehicle industry, and must not be passed on to any third party. All recommendations regarding products and their servicing or usage are with reference to Knorr-Bremse products and should not be considered applicable to products from other manufacturers. This information does not purport to be all-inclusive and no responsibility is assumed as a result of its use. We cannot accept any liability nor offer any guarantee regarding data accuracy, completeness or timeliness. The information does not represent any guarantee or ensured characteristics of the Products or Systems described. No liability can be accepted based on the information, its use, recommendations or advice provided. In no event may we be held liable for any damage or loss except in the case of wilful intent or gross negligence on our part, or if any mandatory legal provisions apply. Any legal disputes arising from the use of this information shall be subject to German law. Note: If service work is carried out on a vehicle as a result of information taken from this document, it is the responsibility of the workshop to ensure the vehicle is fully tested and in full functional order before the vehicle is returned into service. Knorr-Bremse accepts no liability for problems caused as a result of appropriate tests not being carried out. This disclaimer is an English translation of a German text, which should be referred to for all legal purposes.

ECUtalk TEBS Users Guide

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Contents Chapter 1 Introduction............................................................................................................... 6

1.1 General Description............................................................................................................................6 Chapter 2 Installation Instructions of ECUtalk ..................................................................... 7

2.1 System Requirements: .......................................................................................................................7 2.2 First Installation and Updating of ECUtalk:......................................................................................7 2.3 Program Start ...................................................................................................................................15

Chapter 3 Starting Diagnostic Session .................................................................................. 16 3.1 Before Starting .................................................................................................................................16 3.2 Starting of the Program ....................................................................................................................16 3.3 Operating Modes and Access Levels...............................................................................................17 3.4 Information at Start Up .....................................................................................................................19 3.5 Communication Interfaces................................................................................................................20

Chapter 4 Information & Configuration.................................................................................. 21 4.1 Initialisation.......................................................................................................................................21 4.2 Screen Structures.............................................................................................................................21 4.3 Loading a Parameter File .................................................................................................................23 4.4 Parameter Compatibilities ................................................................................................................24 4.5 Saving Parameters...........................................................................................................................29 4.6 Retrieving Data from the ECU..........................................................................................................29 4.7 Storing the Configuration in the ECU ...............................................................................................29 4.8 Configuration and Information Screens............................................................................................31

Chapter 5 Overview of ADL ..................................................................................................... 53 5.1 Downloading an ADL File.................................................................................................................54 5.2 Expected Input Configuration...........................................................................................................54 5.3 Expected Output Configuration ........................................................................................................55 5.4 ECUtalk and ADL...........................................................................................................................56

Chapter 6 System Check Pages.............................................................................................. 57 6.1 Pressure Component Check ............................................................................................................58 6.2 Wheel and Air-Gap Speeds..............................................................................................................61 6.3 Auxiliary Function Tests ...................................................................................................................64 6.4 Power Supply and Warning Lamp Check ........................................................................................69 6.5 Auxiliary Input Check........................................................................................................................71


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Test steps for Advanced LAC.................................................................................................................72 6.6 RSP Installation Check..................................................................................................................79 6.7 Axle Modulator Valve Test (4S/3M configurations only) ..................................................................80

Chapter 7 End of Line (EOL) Test ........................................................................................... 82 7.1 The EOL Test Window .....................................................................................................................82

Chapter 8 Diagnostic Error Codes........................................................................................ 102 8.1 Dynamic..........................................................................................................................................102 8.2 Current............................................................................................................................................102 8.3 Recorded........................................................................................................................................102 8.4 Common Types of Error .................................................................................................................102 8.5 Diagnostic Trouble Code Window..................................................................................................104

Chapter 9 Print Preview......................................................................................................... 106 Chapter 10 Miscellaneous Functions ................................................................................... 108

10.1 Operating Conditions....................................................................................................................108 10.2 Preferences ..................................................................................................................................109

Chapter 11 Trailer EBS Flash Tool ....................................................................................... 113 11.1 Introduction...................................................................................................................................113 11.2 Update Package...........................................................................................................................113 11.3 License Keys ................................................................................................................................113 Customer license..................................................................................................................................113 Engineer license...................................................................................................................................114 Developer license.................................................................................................................................114 11.4 Using Flash ..................................................................................................................................114 Starting Flash .......................................................................................................................................114 Access levels........................................................................................................................................114 Compatibility .........................................................................................................................................120 11.5 Error handling...............................................................................................................................121 Interruption in communications ............................................................................................................121 Corrupt Drive Software.........................................................................................................................121 Corrupt EEPROM Dataset ...................................................................................................................122

Chapter 12 Appendix ............................................................................................................. 123 A --- TEBS Parameter vs. ECU Software Version Table .....................................................................123 B --- Abbreviations................................................................................................................................126 C --- Fault Code Table..........................................................................................................................127 D --- Auxiliary tools ...............................................................................................................................128 E --- Supported System Configurations ...............................................................................................136 F --- How to change the Emark Country Code Default Value on the LSF Plate ..................................143


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Chapter 1 Introduction

1.1 General Description

The ECUtalk version 3.3 is a program that is able to configure trailers installed with the TEBS braking system and hence control the functional behaviour of that system. The program can interrogate the systems fault storage, carry out system checks and enable automatic end-of-line testing. ECUtalk supports TEBS systems from ECU software version 501 to 530. Only persons who have received the appropriate level of training may use this program, see note below. During configuration of the braking system the personal identification number (PIN) associated with the authorised user is stored within the ECU and may be accessed for future reference. The Brake System Designer (BSD) program designs the brake system, carries out performance calculations and finally stores the results in a configuration file. ECUtalk interprets the configuration file and configures the trailer braking system. In addition, non brake related functions such as Auxiliary outputs or Auxiliary inputs may also be manually configured. ECUtalk provides a high quality reporting system for fault records, generation of Load Sensing data plates, end of line test results and general operating conditions.

Note: As a result of improper use, or the configuration of inappropriate parameters, the characteristics of the braking system may not be compatible with the vehicle on which the system is installed. Such action could prejudice the safe operation of the vehicle by not complying with legally prescribed requirements concerning braking and other functions.


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Chapter 2 Installation Instructions of ECUtalk

2.1 System Requirements:

Windows NT 4.0, Service Pack 4, Windows 98, Second Edition, Windows 2000, Windows XP 100 Mbytes free Hard Drive space available. For Windows 2000, Windows XP: Pentium II with 400 MHz or better, 128 MB RAM. For Windows 98, Windows NT 4.0: Pentium II with 133 MHz or better 64 MB RAM (minimum).

Note: The operating systems Windows98 and Windows NT are no longer supported by Microsoft. It is not guaranteed therefore that ECUtalk will work perfectly on those machines.

Web-Browser:

Microsoft Internet Explorer Version. 4.01 or higher

Display resolution should be 800x600 or higher, with 256 colours or more.

Note: It is strongly recommended to use standard font type (96dpi). The use of "small fonts", "big fonts" and "very big" fonts is not allowed (selectable under Desktop Properties)!

2.2 First Installation and Updating of ECUtalk:

Attention: If your PC is running Windows NT, Windows 2000 or Windows XP you need administrator rights!

Attention: To avoid possible loss of data, all applications should be closed before installation is started!

For installation of ECUtalk put the CD-ROM into the CD drive. The installation will start automatically if your PC is configured accordingly. If the installation does not start automatically, please choose the function "Run" via the Windows "Start" button. Enter "E:\Installer_1.40\setup.exe" in the "Open" field (if the CD-ROM disk drive is mapped to drive letter E. Otherwise use the letter the drive is mapped to. After pressing the "Ok" button the installation will start. Please follow the instructions as described below.


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The language for the installation itself has to be selected in the following user window. The language associated with the diagnostic program (packages that are going to be installed) needs to be selected (see InstallShield Wizard Language' window).

The InstallShield Wizard will then load and guide you through the installation process. The loading speed depends on the speed of the computer and the connected drives and devices.


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The following windows give general information and disclaimers for the installation of ECUtalk which are not referenced here. The functional part of the installation starts with the InstallShield Wizard main menu. InstallShield Wizard Main menu: The number of buttons in the window depends on the packages included in the installation and on the packages already installed on the computer.

Selecting the Install ECUtalk PC Diagnostics or Install Add-On button leads to the licence agreement window. To continue, the licence agreement must be accepted otherwise installation will be terminated.


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If the Install ECUtalk PC Diagnostics button was selected, the user can choose between "Automatic" installation and "Custom Setup" as shown below.

Selecting the "Automatic" or Custom Setup button leads to the next window where the user can change the destination path of ECUtalk. In this part the InstallShield Wizard offers a default destination path.


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The installer program then searches for installable language packages and will show these and the languages of already installed packages in the next window.

After selection of the language, the software will check the version of the Main application and the version of the ECU-package. If a newer version of the program is to be installed the files associated with the existing installation will be uninstalled and unregistered if necessary, the files of the new version will then be installed automatically. If a new ECU-package is to be installed, the files will be installed automatically without the uninstallation process. Messages will appear like those given below as examples:

Now all relevant files are copied to your PC.


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When selecting the "Next" button, the user is asked to reboot the computer. It is necessary to restart the system before ECUtalk is started so that the modifications of the installation can be passed to the system.

After selecting the "Finish" button, the next window will appear. This window informs the user that the installation is finished and, in case of selection of the restart option, the system is shut down immediately. The CD-ROM should then be removed from the CD drive.


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As an alternative to the Automatic installation, the program offers a customised way that allows the user to select packages to be installed individually. The selection of Automatic or Custom setup must be made in the InstallShield Wizard Way to go window described above. If, in the InstallShield Wizard Way to go window, the "Custom setup" button is selected, the following window opens and the user is asked to enter the path of the main application or ECU-package to be installed. The default path, which is shown in the input line, points to the "Data" directory on the CD-ROM or to the directory structure, where the data of the ECU-relevant program parts are located. If other packages must be installed, this folder can be chosen with the browser window, as shown below.

When the installation path is confirmed by selecting the Next button a managing window opens. This window shows the user which versions of the main application and the ECU-packages are already installed on the computer and which versions are available on the CD-ROM or at the previously selected installation path. In the left list area, the installed versions are displayed and the checkbox(es) filled. If one or more of the ECU-packages must be uninstalled, the corresponding checkbox must be clicked. The check mark changes to an "X". The Main application ECUtalk cannot be uninstalled in this window, but only with the uninstall function. This can be selected with the Uninstall button in the InstallShield Wizard main menu. The right list area shows the ECU-packages which can be installed from CD-ROM or directory structure. They can be selected by clicking on the check box. If the same ECU-package is shown in the left list area (already installed on the computer) then the check mark changes to an "X". This results in the uninstallation of the marked package(s) before the new packages are installed.


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When selecting the "Next" button, the selected packages will be displayed in the window as shown in the following view.

If the package selection must be modified again, the "Back" button opens the managing window once more.


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When selecting the "Next" button from the Summary window, the InstallShield Wizard - Language window is displayed. After selection of the language, the ECU-packages with the supported languages are displayed as a summary. Then the data is copied to the computer. This will take some time, dependent on the number of files per package and on the number of packages. During this time some messages appear on the screen equivalent to those described in the Automatic installation way. The rest of the installation process is similar to the Automatic way.

2.3 Program Start

Before ECUtalk is started, the communication interface UDIF must be connected to the Electronic Control Unit (ECU) and to the "COM1"- or "COM2"-serial interface connector at the PC (9-pin connector). The ECU (e.g. Trailer EBS module) has to be supplied with power. The software version of UDIF should be checked and updated if necessary. For this operation refer to the description for "UDIF_download".

Start the program with the desktop icon or with the entry "ECUtalk Diagnostics TEBS" in the programs menu (START -> PROGRAMS -> KNORR). Choose "New Session..." in the "File" menu and select the required session in the session manager user-window.

Note: After the program has been installed, the user must specify all relevant paths, i.e. where to save and get the following files and reports:

Read Brake calculation files Save configuration files LSF plate files EOL protocol report files Faults archive

This can be done via the menu item Trailer diagnostics and the sub item Preferences. Click on the button Modify to open the small browser window where you can link to the desired folder. If this is not done the location where files are saved is dependent on the current valid folder location and may therefore vary. Beginning with version 3.3, the path settings are preserved in case of updating the program with a newer version.


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Chapter 3 Starting Diagnostic Session

3.1 Before Starting

If a TEBS module is connected ECUtalk will automatically recognise the software level installed in the ECU. When running ECUtalk in Demo Mode it is necessary to select the specific software level associated with the ECU in which Demo Mode should operate. This selection must be made prior to opening a session of ECUtalk. The background of this function is that different functionalities are available depending on the software level of the TEBS. If a dataset, which later will be used for the configuration of the electronics, is to be generated using Demo Mode the software level of the TEBS to be configured must be defined. With the help of a small additional program, the software level of the TEBS electronics used by the diagnostics program in the Demo Mode can easily be set, so that only the parameters which are in fact supported by that control unit can be set.

3.2 Starting of the Program

ECUtalk can be started either by using the Start menu or clicking on the icon from the desktop. ECUtalk is a framework system which can use many applications.

Use the File->New Session menu item to select the TEBS v3.3 proxy from the list. The program will start with a double-click on the Trailer-EBS.

If no UDIF (Universal Diagnostic Interface) is connected, the ECUtalk software automatically changes to run in Demo Mode.


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3.3 Operating Modes and Access Levels

ECUtalk operates in different modes depending on the diagnostic user interface and licence key authorisation.

Demo Mode The user can manually select Demo Mode from the Options menu provided the program is not already running a diagnostic session. If ECUtalk detects that no UDIF is connected to the PC, it will automatically run in Demo Mode after loading the TEBS application.

PIN ECUtalk utilises a user locked licensing mechanism. Each user registered by Knorr-Bremse will receive a registry file which must be entered into the system (detailed instructions are sent along with a PIN) in order to make the ECUtalk application fully functional. If the program cannot find the licence key it will run in No PIN or Program Overview Mode. In these cases the program automatically runs in Demo Mode with restricted functionality, when a system configuration is not possible.


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Access Levels ECUtalk TEBS version 3.3 defines three Access Levels: Full, EOL and Extended Service. In the Extended Service and EOL Access Levels there are restrictions that allow setting of certain parameters only:

Function Extended Service access allows to change:

EOL access allows to change:

Pressure compensation Yes Yes LAC - 1 Yes*) No LAC - 2 Yes*) No RTR Yes*) No ABS Active Yes*) No RSP Active Yes*) No ISS Yes*) No ON Yes*) No TOC Yes*) No C3 Yes*) No Pad wear monitoring Yes*) No Traction help Yes*) No Disable lift axle control Yes*) No Advanced Lift Axle Control Yes*) No Lift axle is active at standstill Yes*) No RSP Parameter No No ADL No No Vehicle Identification Number No Yes Plate data No Yes Braking parameters No No

Dynamic wheel diameter No No

Number of pole wheel teeth No No

Write a complete data set (cfg file) to ECU

Yes Yes

Save a cfg file in Demo Mode No No

Load a cfg file in Demo Mode No No

*) Only allowed to add functionality not remove In the EOL Access Level, it is not permitted to change or set single parameter settings. However, loading and saving of a CFG file is permitted, provided the ECU is connected, as well as the above listed exceptions. The following chapters describe the functionality of the application using the Full Access Level rights. There are no further differences in program functionality, except that it is not allowed to load or save a CFG configuration file in Demo Mode.


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3.4 Information at Start Up

When ECUtalk is first opened an information screen appears warning the user about improper use of the program and possible consequences that may arise from its improper use.

By selecting the Yes I have read and understood the implications of using this program button the application will continue in the selected mode without any restriction (if there is no PIN entered the program will only run in Program Overview Mode). By selecting the Proceed with Program Overview button, the program will continue but will only allow the user to preview the program functionality. The next screen provides safety instructions to the user that must be followed before proceeding with the diagnostic session:


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3.5 Communication Interfaces

ECUtalk is able to communicate with TEBS via either of two diagnostic interfaces:

UDIF interface with K-line UDIF interface with 24V CAN

Note: Samtec K-line interface is no longer supported!

Before commencing a diagnostic session, ECUtalk must know which of the above interfaces is to be used. This is realised via the following screen:

Select the appropriate interface by clicking in one of the checkboxes. The selected interface will remain valid unless a communication error occurs. After a communication error the session must be restarted and, during the initialisation process, the window above will be displayed again. There is a possibility to switch directly to Demo Mode by clicking on the Demo mode button to the right of the window.


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Chapter 4 Information & Configuration

4.1 Initialisation

The Information & Configuration screens are automatically displayed when a new diagnostic session is started.

After starting the new session, ECUtalk retrieves all of the configuration parameters from the ECU. The same screens can also be accessed via the Configuration button of the toolbar. When connected to TEBS, the information screens will display the parameters associated with that ECU. In Demo Mode and Program Overview Mode, the information screen will display an example of the parameters associated with a typical TEBS configuration.

4.2 Screen Structures

Each window is split into two screens. The Information screen displays the current configuration and a configuration screen enables the user to change the system configuration or parameter settings.


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Information Screens There are three display areas:

On the left - the current parameters or system / trailer information On the right and associated pictures - graphs or schematics In the lower section - a number of action buttons.

Configuration Screens These can be accessed via the Change Configuration button in the lower section of the screen and they enable access to the area where changes of the configuration are possible.


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4.3 Loading a Parameter File

Selecting the Read from file button opens the dialogue box to load files, which may contain some or all of the configuration parameters associated with the TEBS to be programmed as follows:

The file type that is displayed in the window will depend on the specification of ECU connected. If the ECU has a software version below 520, only files with extension *.s19 can be used. If the ECU has a software version 520 or above, only files with extension *.cfg can be used. In addition to the usual folder and file selection fields, an Interpret button is available. Selection of this button enables the file contents to be viewed before loading it into ECUtalk.

In the caption bar of the configuration file preview window, the files ECU software number can be viewed. The parameters in the preview window are individually defined to assist in identification of the parameter set.

After loading the contents of a configuration file, the following information window will appear: If the configuration file is not complete or it contains corrupted parameter values, only the non-corrupted parameters will be loaded.

When the parameters have been loaded successfully, ECUtalk verifies the compatibility of the configuration and warns the user in case of an error. If any of the parameters is not compatible, it is not possible to write the parameters to the ECU or to save the file on the PC. To correct the failures, go to the corresponding windows and change the parameter values manually. The example above demonstrates a situation where not all of the

configuration parameters were updated (i.e. 89 were modified and a further 6 unchanged). In addition one parameter was invalid: the message box contains the failure information with the parameter value that must be modified.


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4.4 Parameter Compatibilities

ECUtalk verifies that the parameters are within an acceptable range and checks for compatibility. ECUtalk will automatically change some parameters depending on changes made in other areas. The TEBS system has Main parameters and Sub parameters. If one of the Main parameters is changed, the corresponding Sub parameters will automatically be modified to predefined default values.

Example for automatic parameter changes: LAC is configured to AUX1 and Number of controlled axles by LAC is 1. The user changes the total number of axles to 1; therefore a lift axle is not possible. The ECUtalk application will automatically set the AUX1 pin to OFF as well as setting the Number of controlled axles by LAC to 0.

ECUtalk also carries out two types of verification/validation:

Static validation: The values of the parameters must be compatible with each other. This check can be made without a connected ECU.

Dynamic validation: In this case the values of the parameters cannot be verified without an ECU being connected. Checks will not be carried out during parameter modification but only before downloading into the ECU. Note that downloading data in Demo Mode (based on Demo ECU configuration) does not validate the data!


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Validation Methods

Automatic Parameter Changes Nr. Updated Parameters Description

1 AUX4 function set to ON (ECU SW. >= 520) AUX4 pin is used for diagnostics with K-line communication 2 AUX5 function set to OFF

(ECU SW. >= 530) AUX5 pin is used for diagnostics with K-line communication

3 AUX1 function set to OFF (ECU SW. 520) AUX2 function set to OFF (ECU SW. 520)

If the antilock configuration is 4S/3M (ECU SW. 520), the AUX1 and AUX2 pins are used to connect the axle modulator.

4 AUX1 AUX5 function if it is set to LAC1 or LAC2

Determine if LAC1 and/or LAC2 are configurable depending on ECU SW version, antilock configuration, axle number and diagnostic line.

5 Number of axles controlled by LAC1 If the LAC1 function is not configured, the number of axles controlled by LAC1 must be 0. If the LAC1 function is configured the number of axles controlled by LAC1 must not be 0.

6 Number of axles controlled by LAC2 If the LAC2 function is not configured, the number of axles controlled by LAC2 must be 0. If the LAC2 function is configured the number of axles controlled by LAC2 must not be 0.


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Nr. Updated Parameters Description 7 % Air spring pressure (and indirectly the %

bogie load ) where the lift axle controlled by LAC1 is lowered

If the LAC1 function is not configured, the % air spring pressure where the lift axle controlled by LAC1 is lowered, must be 0. If the LAC1 function is configured, the % air spring pressure where the lift axle controlled by LAC1 is lowered must not be 0.

8 % Air spring pressure (and indirectly the % bogie load) where the lift axle controlled by LAC2 is lowered

If the LAC2 function is not configured, the % air spring pressure where the lift axle controlled by LAC2 is lowered must be 0. If the LAC2 function is configured, the % air spring pressure where the lift axle controlled by LAC2 is lowered must be not 0.

9 LAC1 hysteresis If LAC1 is not configured, the hysteresis must be 0. 10 LAC2 hysteresis If LAC2 is not configured, the hysteresis must be 0. 11 Input C function Using K-line diagnostics must be set to OFF

(ECU SW. >= 520). Using CAN diagnostics if the AUX5 function is configured the Input C must be set to OFF (ECU SW. >= 530)

12 Input A or B where Traction Help is configured

If none of the AUX pins are configured to LAC1, this function cannot be configured as auxiliary input

13 Input A or B where Disable control is configured

If none of the AUX pins are configured to LAC1, this function cannot be configured as auxiliary input

14 Enable LAC in standstill If none of the AUX pins are configured to LAC, this parameter is set to YES (ECU SW. >= 503)

15 ISS Inverted If none of the AUX pins are configured to ISS, this parameter is set to NO.

16 AUX1 AUX5 fault indication If an AUX pin is set to OFF, the corresponding fault indication bit must be set to NO

17 RTR/ISS speed limit (ECU SW. < 520) or RTR speed limit and ISS speed limit (ECU SW. >= 520)

If the functions are configured, and the parameters are incorrect, they are set to their default values.

18 RTR pulse time If the function is configured, and the parameter is incorrect, it is set to its default value.

19 Pressure limit This parameter cannot be 0 only applicable to a 4S/3M full trailer configuration.

20 Activate wear warning The pad wear warning limit can be 0% or 5%. If it is greater than 5%, it is set to 5%.

Static Validity Checks (verification without ECU) Nr. Description Text displayed

1 A semi-trailer having one axle can only be configured to 2S/2M.

The number of Sensors is not compatible with the number of axles. The antilock configuration or the number of axles must be changed!

2 For ECU SW. 520 checks if the axle controls match a predefined pattern set

Invalid axle control assignment. Change the Axles controlled by EBS Module or the Axles controlled by Axle Modulator parameter!

3 Verify the number of axles controlled by EBS (max 3)

There are too many axles controlled by the EBS Module. The EBS Module can control a maximum of 3 axles!

4 Verify the number of axles controlled by Axle modulator (max 2)

There are too many axles controlled by the axle modulator. The axle modulator can control a maximum of 2 axles!

5 One auxiliary function can be set to only one AUX pin (except the ON and OFF functions)

The auxiliary functions configured to the AUX pins must be different!

6 The LAC2 function can be configured only if the LAC1 function was already configured.

Function LAC1 should be assigned before assigning function LAC2!

7 The total number of lift axles must be less than the number of axles in the rear group.

The number of lift axles must be less than the total number of axles!

8 The AUX function RSP can be configured only if the RSP active parameter is set to

AUX pins can be configured to the function RSP Active only if the RSP function is enabled!


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Nr. Description Text displayed YES. (for ECU SW. >=520 there is an equivalent dynamic check)

9 Check if the RSP Active parameter can be set to YES (if the ECU supports the function) (for ECU SW. >=520 there is an equivalent dynamic check)

The RSP Active function is not supported by the ECU or by the ABS configuration!

10 The Traction Help and the Disable Control function can only be set to one Auxiliary input at a time.

The Traction Help and the Disable Control functions can be configured to only one auxiliary input!

11 If the Magic Eye is configured, the Input C function must be OFF.

The Magic Eye and the Input C must not be used in the same time!

12 Verify if the auxiliary inputs required by the ADL program are set to ADL - digital input.

The ADL defines the auxiliary input(s) which must be configured:

13 Verify if the auxiliary outputs required by the ADL program are set to ADL.

The ADL defines the auxiliary output(s) which must be configured:

14 If there is no ADL program loaded, none of the AUX pins should be configured to ADL.

There are AUX pins configured to ADL, but no ADL program is loaded!

15 If there is no ADL program loaded, none of the Auxiliary inputs could be configured to ADL - digital input.

There are Auxiliary inputs configured to ADL, but no ADL program is loaded!

16 If there is no ADL program loaded, the Enable ADL to LAC/RTR interface must be configured to NO.

The ADL to LAC/RTR control is enabled, but no ADL program is loaded!

17 If there is no ADL program loaded, the Magic Eye could not be configured to Display ADL Active status.

The ADL to Magic Eye interface is enabled, but no ADL program is loaded!

18 Compares the unladen and laden air spring pressures.

The value of Unladen air spring pressure parameter shouldn't be greater than the value of "Laden air spring pressure"!

19 Check the range (-0.3 ... +0.3) of the Brake compensation parameter.

If the Midrange compensation parameter is positive, its maximum value must be


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Nr. Description Text displayed 26 If the load sensing is realised by an internal

load sensor, the inputs cannot be configured to External LSF sensor.

The external load sensing function is not enabled; the External LSF sensor configuration of the auxiliary input is changed to "Disabled"!

27 If the load sensing is realised by an external load sensor, one of the inputs should be configured to External LSF sensor.

In case of external load sensing, one of the inputs must be configured to "External LSF sensor"! When the internal load sensing is used, none of the inputs may be configured to "External LSF sensor"

28 In case of external load sensing, the signal voltage in the unladen case must not be greater than in the laden case, and both values must be within the operating output range of the sensor.

The value of UMin in unladen case parameter must not be greater than the value of UMax in laden case parameter! The value of Umin in unladen case parameter must not be less than the value of "Low error detection threshold of external load sensor" parameter! The value of Umax in laden case parameter must not be greater than the value of High error detection threshold of external load sensor parameter!

Dynamic Validity Checks (verification with ECU connected) Nr. Description Text displayed 1 Check if the RSP Active parameter can be

set to YES (if the ECU supports the function)

The RSP Active function is not supported by the ECU or by the selected ABS-configuration!

2 The AUX function RSP Active can be configured only if the RSP active parameter is set to YES. (for ECU SW. >=520 there is an automatic check)

AUX pins can be configured to the function RSP Active only if the RSP function is enabled!

3 The loaded ADL is not compatible with the connected ECU.

ADL or the ADL software version is not supported!

4 Check if the current antilock configuration is allowed

The current main antilock configuration is not supported! The current antilock sub-configuration is not supported!


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4.5 Saving Parameters

By clicking on the Save to file button the conventional window file save dialogue will appear. If the connected ECU has a software version of 520 or above or ECUtalk is in Demo Mode the stored file type will have a file extension *.cfg, in other cases the file extension will be *.s19.

4.6 Retrieving Data from the ECU

Using the Read from ECU button will update the ECUtalk memory with the parameters configured in the connected ECU.

4.7 Storing the Configuration in the ECU

The configuration within the ECUtalk memory can be downloaded into the ECU by using the Write to ECU button. The first time a configuration is downloaded into the ECU in any one session, ECUtalk warns that the users personal identification number (PIN) will be written into the ECU.

Once a file has been written to the ECU the next time a file is written the PIN is automatically recorded into the ECU without the warning being displayed. ECUtalk needs time to transmit and store all parameters, especially if an ADL will also be loaded.

When the parameters are successfully written to the ECU, ECUtalk will ask the user to switch the ignition off. The ECU must be restarted in order to make the new parameter set effective. Due to the fact that in Demo Mode there is no ECU to reset, a different message is displayed.

Demo Mode ECU connected


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The communications between the ECUtalk and the ECU will be interrupted if the ignition is turned off.

Note: In ECUtalk, every communication break is treated in the same way; all the open windows will be closed and the ECUtalk memory cleared.

When the ECUtalk notifies that communications have been broken due to the ignition being switched off and the following message is displayed:

If communications are resumed, ECUtalk will re-start the new session. If the conditions are still not correct however, e.g. the ignition is not on; ECUtalk will be unable to establish communications. In this case the following message appears:

Selecting OK means that ECUtalk will try to restart communications. Selecting Demo mode switches into Demo Mode. In the event that no UDIF is connected to the PC while the user tries to build up communication, the program switches immediately into Demo Mode. The program indicates this in the status bar of the main screen.


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4.8 Configuration and Information Screens

The appearance of the respective information and configuration screens will vary depending on the level of software within the TEBS ECU. If a specific ECU does not support a given function, and therefore cannot be configured, the corresponding parameter(s) will not appear in the screen.

Information The Information screen is divided into different sections, which contain the following information:

Top left: Information about the TEBS ECU, which cannot be changed with ECUtalk. Left middle: Vehicle data, which can be changed with ECUtalk. Bottom left: Kilometre counter readings integrated into the electronics, of which two can be

reset. Right: Schematic layout of the configured trailer and braking system (the actual

installation may differ in some areas compared to the schematic). Note: When the ECU is new and therefore not yet configured, the ECU is configured parameter is

No. After the first configuration it will change to Yes. The semi-trailer installation diagrams also apply to centre axle trailers.

In the lower right area of the screen it is possible to access information on the current fault status of the system. Only if an error is present the View faults button text will become red, otherwise it is black.

The screen also contains two buttons for resetting of the two kilometre counters:

Reset Trip Counter resets the trip counter to zero, the display will automatically be updated after selection.

The Set Next Service button allows the Next service parameter to be set via the following window:


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The Next service parameter is an absolute value, which will be compared to the Kilometre counter. With a click on Change configuration the following window will open:

Explanation of the parameters: Parameter name Description or comments Antilock configuration The possible variants are 2S/2M, 2S/2M SL, 4S/2M and 4S/3M for semi or centre-

axle trailers and 4S/3M for full trailers. The 2S/2M SL configuration is the recommended one for dollies.

Axles controlled by EBS (max. 3) for ECU software 520 and above

The check boxes indicate the axles which are controlled by the EBS Module. The numbering sequence is from the front to the rear.

Axles controlled by Axle modulator (max 2) for ECU software 520 and above

The check boxes indicate the axles which are controlled by the axle modulator. The numbering sequence is from the front to the rear.

Number of axles (rear group). For ECU software 512 and below

Number of axles in the bogie. In the case of full trailers the number of axles applies to the rear bogie only.

Vehicle ID (VIN) Alpha-numeric combination identifying the vehicle. ECU software 520 or later uses 17 ASCII characters, while ECU software below 520 only 5 ASCII characters and a numeric value from 0 to 16777215.

Vehicle manufacturer Name of the trailer manufacturer. The maximum number of ASCII characters in case of ECU software 520 and later is 20, in pre 520 software the maximum is 8.

BSD filename Brake calculation reference number from the BSD file. ECU software 520 or later uses 17 ASCII characters, while ECU software below 520 only 5 ASCII characters and a numeric value from 0 to 16777215.

Spring brake actuators are installed

Indicates whether the trailer is equipped with Spring brake actuators. This information is transmitted to the towing vehicle via the ISO11992 CAN communications.

TEBS rotated 180 The parameter indicates that TEBS module has been rotated 180 i.e. cable entries towards the rear of the trailer.


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In case of ECU software version 520 or above, the total number of axles is the sum of the number of axles controlled by the EBS Module and the axle modulator. In case of ECU software 512 or below only the axles in the rear axle group can be configured.

TEBS rotated 180 If the ECU shall be mounted 180, for ECU 521 onwards the PC Diagnostics provides a Plate and sets a concerning flag in the ECU.

If TEBS rotated 180 is checked in the tickbox of the configuration screen (1), the result is shown in the concerning Information screen (2), the flag is set and the plate can is provided for printing.

1

2


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Braking The Braking screen contains parameters relevant to the braking performance of the vehicle. In the case of full trailers installed with 4S/3M configuration the differential slip and the pressure limit values can be set. If the selected vehicle type is a semi-trailer, also with a 4S/3M configuration, the differential slip and the pressure limit parameters are not applicable and therefore not shown on the screen. The number of pole wheel teeth and the dynamic diameter of tyre are also shown. Changes can be made via the Change configuration dialog box, however it is not recommended to change these parameters via the diagnostic program unless the changes have been validated by the generation of a new brake calculation. Failure to follow this recommendation could mean that the trailer braking performance no longer conforms to specific legal requirements. The right hand part of the screen shows the diagram of the load sensing function.

Explanation of the parameters: Parameter name Description or comments Coupling head pressure of the onset point

Defines the pressure at the coupling head at which braking will commence.

Brake actuator pressure of the onset point

Defines the pressure in the brake actuators at which the brakes start to develop a braking force (the wheel can no longer be rotated by hand)

Brake actuator pressure unladen at 6.5 bar pm.

Defines the pressure in the brake actuators for the unladen trailer at a coupling head pressure of 6.5 bar

Brake actuator pressure laden at 6.5 bar pm.

Defines the pressure in the brake actuators for the laden trailer at a coupling head pressure of 6.5 bar

Pressure compensation at 1.6 bar pm.

Modifies the brake actuator delivery pressure characteristics at 1.6 bar coupling head pressure for the laden and unladen vehicle. The compensation may be positive (increase braking performance) or negative (decrease braking performance)

Load measurement sensor external to TEBS = No

In case of No the TEBS doesnt use the external load measurement sensor. In this case the TEBS derives load information based on the air spring pressure.

Unladen air spring pressure Defines the air spring pressure for the unladen vehicle. In the case of a full trailer this pressure relates to the rear axle group only.

Laden air spring pressure Defines the air spring pressure for the laden vehicle. In the case of a full trailer this pressure relates to the rear axle group only.

Load measurement sensor external to TEBS = Yes

In case of Yes the TEBS will use the external load measurement sensor. In this case the operating parameters of the external load sensor must be defined.

Minimum voltage of external load sensor ( Umin in unladen case )

Defines the output voltage of the external load sensor which corresponds to the unladen condition.

Maximum voltage of external load sensor (Umax in laden case)

Defines the output voltage of the external load sensor which corresponds to the laden condition.

Low error detection threshold of external load sensor

When the voltage output is below the low error detection value an error will be recorded. The detection threshold may be selected from the pull down menu by


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Parameter name Description or comments selecting Knorr-Bremse sensor, default or another sensor.

High error detection threshold of external load sensor

When the voltage output is above the high error detection value an error will be recorded. The detection threshold may be selected from the pull down menu by selecting Knorr-Bremse sensor, default or another sensor.

Unladen bogie load Defines the bogie load based on the number of axles in the bogie and the unladen air spring pressure (see brake calculation) which directly relates to the unladen axle/bogie load. In the case of a full trailer the unladen bogie load only applies to the rear axle group.

Laden bogie load Defines the bogie load based on the number of axles in the bogie and the laden air spring pressure (see brake calculation) which directly relates to the laden axle/bogie load. In the case of a full trailer the laden bogie load only applies to the rear axle group.

Number of pole wheel teeth Defines the number of teeth on the pole wheel installed in the "directly controlled" wheels. Using the correct value is important for the RSP function (see above) and to ensure accuracy of the odometer.

Dynamic diameter of tyre Defines the diameter of the tyre in "mm" fitted to the "directly controlled" wheels. Using the correct value is important for the RSP function (see above) and to ensure accuracy of the odometer.

Rear axle pressure limit Defines the brake pressure limit for the rear axle group of a full trailer equipped with a 4S/3M configuration. The actual value (when required) is obtained from the brake calculation for the trailer. A pressure limit value will only be displayed when the function is active.

Front to rear differential wheel slip

This function only applies to full trailers equipped with a 4S/3M system configuration. The function enables the braking forces to be adjusted between front and rear axles to change the wear rate of the brake linings or pads. Adjustment is possible in the range +2% to -2% in 0.1% intervals. An increase in braking on the front axle requires a positive adjustment.

Note: The minimum voltage of external load sensor (Umin in unladen case), which defines the output voltage of the external load sensor corresponding to the unladen condition is set constantly to 1V and cannot be changed using the diagnostic program.


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Auxiliary Outputs Non-braking related functions are configured in the Auxiliary outputs screen. The maximum number of Auxiliary outputs is generally 4 these are labelled AUX1 to AUX4. However, for ECU 530, there is a maximum of only 2 outputs and these are labelled AUX4 and 5. In case of ECU software below 520 the ISS speed and the RTR speed parameters are common. The screen shows two different values for commonality but the Change configuration dialogue box defines only one RTR/ISS speed threshold.

The right side of the screen shows a section of the terminal strip of the modulator. If the mouse pointer is moved over the connector pins without any click, information about function and cable colour is shown. Function availability:

In case of TEBS ES2041 with software version 530 or above, the ECU will have only one connector. In this case ECUtalk shows only one active connector and the other is greyed out to be not applicable.

Function First ECU software version

AUX1 All AUX2 All AUX3 510 AUX4 520 AUX5 530


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Note: In the case of 4S/3M configurations, AUX1 & 2 are automatically set to Used by Axle

Modulator. When "K" Line diagnostics is used, AUX4 must be configured to "ON" to deliver the 24 V supply

for diagnostics. The maximum current consumption is 1.5 amps.

The contents of the left hand part of screen will depend on the Auxiliary function configuration. If there is no function configured, the Auxiliary function parameter area is empty. If LAC is configured but neither RTR nor ISS is, only the LAC page is shown or, if either RTR or ISS is configured but LAC is not, only the ISS-RTR parameters page is shown.

Explanation of the parameters: Parameter name Description or comments Auxiliary function 1 Predefined Auxiliary functions. The possibilities are the followings: OFF, ISS,

RTR, LAC1, LAC2, ABS, RSP, TOC, ON, ADL A ,ADL B, ADL C, ADL D and C3 Enable fault indication for AUX1 function

When a fault is detected in the auxiliary output, a fault warning is transmitted to the tractor via pin 5 of the ISO7638 connector only if the box has a tick mark. This warning will only be displayed when the vehicle is stationary and the braking system is first powered. A fault in an auxiliary function is indicated by a flashing warning signal. If the auxiliary function is configured to "OFF", the fault indication must not be enabled. If the RSP function is enabled and the trailer is equipped with LAC or RTR, then it is essential that the Enable Fault Indication function is enabled.

Auxiliary function 2 Same as in auxiliary function 1 Enable fault indication for AUX2 function

Same as in Enable fault indication for AUX1

Auxiliary function 3 Same as in auxiliary function 1 Introduced in ECU software version 510.

Enable fault indication for AUX3 function

Same as in Enable fault indication for AUX1 Introduced in ECU software version 510.

Auxiliary function 4 Same as in auxiliary function 1, but the C3 speed signal function cannot be configured Introduced in ECU software version 520.




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Parameter name Description or comments Auxiliary function 5 Predefined auxiliary functions. The configuration possibilities are: OFF, ISS,

RTR, LAC1, LAC2, ABS, TOC, ON Introduced in ECU software version 530.



ISS signal Inverted The output is switched from 24V to 0V when the ISS speed threshold has been reached

ISS speed threshold The speed at which the ISS is configured defines the speed at which the voltage switch occurs. Either 0V to 24V or 24V to 0V.

ISS negative hysteresis To prevent multiple switching at the ISS speed threshold, a speed hysteresis is automatically enabled (10%). However, it is possible to increase this value dependent on the configured speed threshold and application.

RTR speed threshold Defines the speed at which a signal is transmitted to the raise/lower valve to return the trailer suspension to its normal drive height. This speed may be configured between 4 and 62 km/h, however, the default speed is 16 km/h which is the accepted speed threshold for this function.

RTR valve actuation time It is possible to configure the duration of the speed threshold signal to the raise/lower valve. The limits are between 5 and 35sec, however, the default value of 5sec is more than adequate to ensure that the RTR function is realised.

LAC is active at standstill When this function is enabled the lift axle control is activated or de-activated (depending on the load condition of the trailer) when the trailer is stationary.

Number of lift axle(s) controlled by LAC1

Defines the number of lift axles that are controlled by the auxiliary output configured to LAC1.

Lower lift axle(s) controlled by LAC1 at this axle load %

When this value is 100%, the lift axle will be lowered when the air spring pressure in the non lifted axles reaches the programmed laden pressure. When a value of


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Possible configurations: Auxiliary functions

Descriptions

OFF No auxiliary function enabled unless a 4S/3M configuration is installed, in which case both AUX1 & 2 must also be configured to "OFF as the associated pins are automatically utilised for the axle modulator.

ISS Defines a speed at which the output switches from 0V to 24V. When "ISS Inverted" is selected, the output is switched from 24V to 0V.

RTR The "Reset to Ride" signal is generated at a pre-defined speed (usually 16km/h) which, when connected to a raise/lower valve with integrated solenoid, will automatically reset the suspension to the "drive" position.

LAC1 Provides full automatic control of one or two lift axles when connected to a single lift axle control valve. When two lift axles are controlled they will operate in parallel.

LAC2 Provides full automatic control of one or two lift axles when connected to a single lift axle control valve. When two lift axles are controlled they will operate in parallel. When used in conjunction with LAC1 the lift axle control is in series.

ABS A 24V output is generated when the trailer ABS becomes active. This may be connected to a trailer mounted endurance brake (Retarder) to provide ABS control of the endurance brake.

RSP When the RSP stability control signal becomes active a 24V output is generated, which will continue as long as the RSP function is operational. However, if RSP active is configured to AUX1 or AUX2 the current limit is 1.5A max, if it is configured to AUX3 the current limit is 2.5A max.

TOC A 48ms 24V pulse is generated every kilometre travelled. ADL A-D ADL outputs. Functions vary from one ADL software program to another. C3 This auxiliary function produces a PWM signal which is proportional to trailer speed in km/h. This

signal may be used to provide speed information to other electronic systems installed on the trailer. ON Provides a 24V continuous output. When configured to AUX1 or AUX2 the current limit is 1.5A max, if

it is configured to AUX3 the current limit is 2.5A max. For TEBS utilising software 512 or lower, the ISS and RTR cannot be configured independently. For systems having software 520 or higher, the ISS and RTR speed settings may be independently defined.

Auxiliary Input An independent input can be configured in the Auxiliary input page. Only input functions supported by the associated ECU will be displayed. If the ECU has software below version 510, the page is not shown as no auxiliary inputs are available.

Function availability: Function First ECU software version Input A 510 Input B 510 Input C 520

Functionality of ECU 521


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In this screen it is possible to select a number of functions, such as Traction Help, disable lift axle control and brake lining (pad) wear limit. In the Change configuration screen, it is possible to select the required functions; however, there is no parameter setting associated with these functions. Should K Line diagnostics be used, a Trailer Information Module (TIM) is connected or a Magic Eye configured, Input C cannot be configured to fulfil any of the input functions. Should a Magic Eye be configured and Input C also defined, the program will disregard the Magic Eye and a warning message will be displayed to advise the user that both options are configured. If K Line diagnostics are being used, Input C cannot be configured. When 24V CAN communication is used and K Line diagnostics is also required to support TIM, the configuration of Input C will cancel the K Line diagnostic output but no warning message will be displayed. Explanation of available information: Parameter name Description or comments Number of Brake Pad replacements

The ECU will automatically detect the pad replacement and increase the counter. This is realised only after the vehicle has been driven.

Last Brake Pad change at [km]

The automatic detection of pad replacement also stores the kilometre count at the time when the change was made.

Note: Brake pad replacements can only be recognised and counted when lining wear sensing (BVS)

has been activated as an auxiliary input. It is possible to manually increment the counter by breaking the connection between spider and ECU and then reconnecting. To prevent unnecessary counter increments the counter will not increment until after the vehicle is driven.

The following picture shows the functions selectable for each input:

At any one time it is possible to configure an Auxiliary Input to one of the eight options defined in the configuration window. When pad wear is selected there is also the possibility to define whether a warning signal should be transmitted to the towing vehicle via the ISO7638 connector when the pads require changing.


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Possible configurations: Auxiliary functions

Descriptions

Disabled No function is configured Pad wear When pad wear sensors are installed the wear limit when the pads require changing is a fixed

value. When this limit is reached this is recorded by the TEBS and when configured a warning signal is transmitted to the towing vehicle to provide driver warning. This warning is only available when the vehicle is stationary and the ignition is first switched on.

Traction Help When the front axle of a trailer bogie is a lift axle, a "Traction Help" signal transmitted from the towing vehicle results in the trailer lift axle being raised. This action will increase the load on the drive axle of the towing vehicle thereby increasing its tractive capability. This function is automatically disabled when a speed of 30 km/h has been exceeded. The signal transmitted by the towing vehicle may switch either a 24V or ground connection.

Disable lift axle control

The lift axle control function is disabled when a signal is transmitted from a switch from either the towing vehicle or the trailer. This signal may switch either a 24V or ground connection.

ADL - Digital input

Auxiliary inputs used by the ADL program.

ADL Analogue input (0 5V)

Auxiliary inputs used by the ADL program. For input configurations that utilise a 5 V Sensor the voltage supply is only available from TEBS.

ADL Analogue input (0 24V)

Auxiliary inputs used by the ADL program. For input configurations that utilise a 24 V Sensor types, the voltage supply may be obtained direct from the battery or an auxiliary output of TEBS.

External LSF sensor

If the TEBS module uses external load sensing device e.g. in the case of mechanical suspension, then an external sensor must be configured to one of the auxiliary inputs.

Advanced LAC Used with a tri-state switch combining the Traction Help and the disable lift axle control function.


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Other Functions In the Other functions window, the warning lamp sequence and Magic Eye related parameters can be configured. Configuration of ADL and KDP functions is also accessed in this screen.

The Magic Eyeoption was first introduced in the ECU software version 512.


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It is not possible to configure Input C and Magic Eye at the same time. In this case the ECU will disregard the Magic Eye configuration. A warning message will be displayed if both options are configured.

The configured warning lamp sequence is displayed graphically, while a Magic Eyepicture is displayed when it is configured, otherwise a symbol is displayed. For further details on ADL please refer to the chapter Overview of ADL.


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Explanation of the parameters: Parameter name Description or comments Warning Lamp (WL) operation Off after 2 sec: When the trailer is stationary and the system is first powered, the

warning lamp will illuminate for a period of 2 sec and then go off, when no faults are present. Off after 7 km/h: When the trailer is stationary and the system is first powered, the warning lamp will illuminate for a period of 2 sec, then go off for 1 sec and then come on again. When no faults are present the warning lamp will go out when the vehicle speed is between 7 and 15km/h and no fault is present.

Enable Service interval exceeded warning via ISO7638 Pin 5

When this function is enabled a signal is transmitted to the towing vehicle to provide a warning when the "service interval" has been exceeded. The warning is only transmitted when the vehicle is stationary and the TEBS is first powered.

Magic Eyewarning for braking system faults.

The Magic Eye will provide a warning when a fault within the TEBS braking system has been detected.

Magic Eyewarning for non braking system faults.

The Magic Eye will provide a warning when a fault within the configured Auxiliary systems controlled by TEBS has been detected.

Magic Eyewarning when pad wear limit is exceeded

The Magic Eye will provide a warning when the Brake Pad wear limit has been exceeded.

Magic Eyewarning when service interval is exceeded

The Magic Eye will provide a warning when the programmed service interval has been exceeded.

Magic Eyewarning when programmed ADL functions event occurs.

The Magic Eye monitors the function programmed by ADL

Enable Knorr Bremse off board data logging protocol via K Line

If this check box is highlighted the Knorr-Bremse off board data logging protocol (KDP) is enabled.

Enable KDP/ADL interface The connection between the KDP and ADL can be set by this parameter. Enable ADL LAC/RTR control Selection of the check box enables the ADL to change the functional behaviour of

the LAC and RTR.


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RSP The RSP function within TEBS reacts to the potential of trailer roll-over by automatically applying the brakes of the trailer to reduce the speed of the combination, and hence lateral acceleration, thereby enhancing vehicle stability. The following window is used to select the RSP configuration and the associated parameters:

Explanation of the parameters: Parameter name Description or comments RSP function enabled When "tick box" is highlighted, the RSP function is activated. RSP step 2 intervention only Selecting this option will disable all step 1 interventions and limit the RSP function

to step 2 interventions only. Effective Wheelbase Semi-trailers: this is the distance from the kingpin to the centre of bogie. Full

trailer: this is the distance from the centre of the front axle group to the centre of the rear axle group. This parameter is defined by selecting either a wheel base or < 5.5 m or > 5.5 m

Track This is the distance from the centre of a tyre on one side of an axle to the centre of the tyre on the opposite side of the same axle. This parameter is defined by selecting either single or double tyres

Assignment of lateral deviation Assigns the left or right offset of the TEBS module from the longitudinal centre line of the trailer.

Offset value Defines the actual the left or right offset of the TEBS module from the longitudinal centre line of the trailer.

The RSP function is supported from TEBS software version 510. The function needs hardware components which are not available in all versions of the TEBS modules, therefore the possibility to configure the function is verified with a validation check when the TEBS is connected with the diagnostics.


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Configuration of the RSP parameters is carried out as follows: Enable the RSP function and then define any offset of the module along with the orientation if applicable.

Select the Next button to proceed to define the trailer type and, where applicable, its physical parameters:

When a semi-trailer is selected it is then possible to configure the additional parameters related to wheelbase, track and limiting RSP interventions to Step 2.


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Selecting a centre axle trailer or a full trailer, the parameters are set automatically to their default values: RSP step 2 intervention only is set to disabled and the Effective wheelbase is set to greater than 5.5 metres. Configuring the step 2 intervention only, or a short wheelbase, is very specifically for semi trailers.


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Plates This section includes the additional data which is required for the Load Sensing (LSF) plate that is attached to the trailer.

In the Plates it is possible to access the LSF and trailer information plate creation mode. In this mode it is also possible to view, print and save the load sensing plate and ECU rotated plate. Printer configuration can also be realised from these windows. Note: Certain parameters in this window are not stored in the ECU! Therefore, the next time that

ECUtalk is connected to the same ECU; these parameters must be set manually if a new LSF plate is to be printed which contains all non stored information.

ECUtalk uses *.cfg file format to store parameters of ECU software 520 and above. The *.cfg file is able to store additional parameters such as that required for the Plate data, which, when saved, can be accessed at a later date. ECUtalk also uses *.s19 file format to save parameters of ECU software up to 520. The *.s19 file is not flexible enough to store additional parameters - only those which are stored in the ECU. Therefore such parameters cannot be saved for future use and must be entered manually or the plate configuration saved separately for future reference. The LSF plate is common for 2M and 3M system configurations and trailer types (semi / centre axle trailers and full trailers). The LSF parameters stored within TEBS only apply to the axles that are connected directly to the TEBS Modulator. In the case of 4S/3M full trailer installations the LSF information area of the plate contains empty spaces for the axles which are controlled by the Axle Modulator. The Input Window for the additional functions can be accessed by selecting Change configuration.


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The configuration window shown above contains the design as seen for semi- and centre-axle trailers. But if a full trailer is to be configured additional input fields are available. As the 4S/3M full trailer configuration utilises slip control based on the wheel slip of the rear axle(s) no LSF data is available for the front axle. Therefore by default the relevant boxes in the LSF plate will be empty. Should it be required to include information relevant to the front axle(s) this can be entered manually and stored in the *.cfg file for future reference. Explanation of the parameter: Parameter name Description or comments Brake actuator size, axle 1-5 Size/Type of service brake actuator or spring brake actuator installed on each

axle e.g. 24 or 24/30 5 characters are available for this information Lever length, axle 1-5 Slack adjuster lever length installed on each axle - this information is only

required for S Cam brakes with an external lever. E Mark country code E Mark for the country in which the trailer was approved. E Mark approval number The approval number is obtained from the trailer approval report Laden load of the front axle group 4S/3M full trailer configuration only

This only applies to full trailers installed with a 4S/3M configuration and defines the combined laden axle load of the axles controlled by the independent axle modulator.

Unladen load of the front axle group 4S/3M full trailer configuration only

This only applies to full trailers installed with a 4S/3M configuration and defines the combined unladen axle load of the axles controlled by the independent axle modulator.

Laden air spring pressure at front axle group

Defines the laden air spring pressure for the front axle group.

Unladen air spring pressure at front axle group

Defines the unladen air spring pressure for the front axle group.

When the trailer is configured to external load sensing, the columns for unladen and laden suspension pressure are replaced by the external load sensors voltage values corresponding to the unladen and laden trailer. The values can be overwritten freely using two sets of six edit fields corresponding to the unladen and laden case. The first field is for entering the column header, and the next five for entering the values for up to five axles.


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TEBS rotated 180 If the module is mounted 180 rotated and the concerning Checkmark was set in the configuration screen the Button create rotated ECU Sticker is available in the in the plate information screen and the plate can be printed.


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Changing the Logo Picture In the upper left corner of the LSF plate, the EOL test report and the Fault report there is a picture showing, by default, the Knorr-Bremse logo. There is the possibility to customise this picture, replacing it with the trailer manufacturers own logo. The picture information is stored in three files in Windows metafile format, with extension wmf. To find the files, go to the installation folder of ECUtalk - usually C:\Program Files\Knorr-Bremse\ECUtalk\ by default using Windows Explorer. Select the ECUApp\EcuProxy\Bin folder, to locate the files lsflogo.wmf, eollogo.wmf and faultlogo.wmf, which are the logo picture files for the LSF plate, EOL test report and Fault report respectively. Before changing the files it is recommended to save a backup copy. Simply overwrite these files with the files containing the company logo, preserving the original file names. The recommended picture sizes are 140x70 pixels for LSF plate logo, and 72x64 pixels for the EOL test and Fault reports. Important! The file names must remain lsflogo, eollogo and faultlogo, and the file format also must be Windows Metafile (file extension wmf)!

The Language of the Plates and Reports Every label on the plate is displayed in two languages: English and the selected language of the program. If the selected language is English, the cells on the plate containing data labels will be displayed only in English.


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Chapter 5 Overview of ADL

The Auxiliary Design Language (ADL) feature of TEBS allows new auxiliary functions to be realised to control non braking functions of the trailer. ADL programs are developed by Knorr-Bremse and can be written to the TEBS via the ECUtalk along with any associated configuration requirements of the ADL.

The ADL programs are executed by an internal interpreter/virtual machine that ensures only carefully controlled inputs and outputs can be used by an ADL program, thereby ensuring that the core braking and safety functions of the TEBS are not compromised. An ADL program may use auxiliary inputs and outputs or interface to other internal auxiliary functions of the TEBS. When a program is downloaded to the TEBS, a message box will be shown defining the required configuration (see below for further explanation). Therefore it is essential that the TEBS is configured correctly; failures will result in the incorrect function of the ADL program, and may also cause unnecessary failures to be logged and the yellow warning signal to flash!


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5.1 Downloading an ADL File

To download an ADL file, select the Load ADL button from the Other functions screen of the Information & Configuration window, select the ADL file (ADL files have a .ads extension) and press the Open button. The ADL program is now loaded into the diagnostic program (note: at this moment it has not been written to the TEBS), a message box will be displayed giving the following information:

ADL Program Number: Unique number of the ADL file. Expected Input Configuration: Auxiliary input Expected Output Configuration: Auxiliary output Description: Brief description of the ADL program. Within an ADL there are two kinds of files differing in ADL program number and in size. Version 1 files can be written to ECUs having software versions 520 or 521, while the version 2 ADL files can be written to ECUs having software version 521. Make a note of the expected input and output configuration and click the OK button. Using the configuration menu, set up the auxiliary inputs and outputs to match the expected ADL configuration. Once complete, the configuration and ADL program can be written to the TEBS using the Write to ECU button. Note: ECUtalk does not allow a configuration utilising an ADL if the required auxiliary inputs and

outputs are not correctly configured (see the Validation method in Chapter 3)

5.2 Expected Input Configuration

An ADL program can use any of the auxiliary electrical inputs (Input A, B or C) of the TEBS. The ADL program may also require built in features such as 'Lift Axle Control. These will be indicated in the message box when an ADL program is loaded. The configuration of the input can be set through the Auxiliary Input tab of the Information & Configuration window. The table below summarises the possible input configurations that an ADL program may request.

Input A Input B Input C (up to 520) Input C (521) Configuration Off Yes Yes Yes Yes Pad wear Yes Yes Yes Yes Traction Help Yes Yes No Yes Disable lift axle control Yes Yes No Yes ADL Digital input Yes Yes Yes Yes ADL Analogue input (0 to 5V) *

Yes Yes No Yes

ADL Analogue input (0 to 24V) *

Yes Yes No Yes

External LSF sensor * Yes Yes No No Advanced LAC * Yes Yes No Yes

*) not available in ECU SW versions below 521 It is important to note that failure to set the correct input configuration for ADL will result in an ADL Input Configuration Error being stored in the failure memory, and the yellow warning lamp will flash when the vehicle is stationary.


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5.3 Expected Output Configuration

An ADL program can use any of the auxiliary outputs (AUX1, AUX2, AUX3, AUX4 and AUX5), it may also use one of the existing functions of TEBS (Lift Axle Control, Reset to Ride (LAC/RTR) and Magic Eye). The expected output configuration will be indicated in the message box when the ADL program is loaded. If the ADL program uses an auxiliary output directly, then a message box will display a request to configure (or connect) the ADL outputs (ADL-OPA, ADL-OPB, ADL-OPC or ADL-OPD) to an auxiliary output. The ADL program is not concerned about which auxiliary output pin the function is connected to. Therefore, the trailer builder should select the most appropriate output. The configuration of the auxiliary outputs can be set through the Auxiliary Output tab of the Information and Configuration window.

If an ADL program uses an existing LAC/RTR function, a message box will display a request to configure (or connect) the LAC/RTR control, this can be set through the Other functions tab of the Information and Configuration window. If the ADL program uses the Magic Eye function, a message box will display a request to configure (or connect) the Magic Eye, this can be set through the Other Functions tab of the Information and Configuration window.


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5.4 ECUtalk and ADL

During the initialisation of ECUtalk, the program reads the ADL code from the ECU. When the configuration is stored in a file, the ADL will also be stored. Therefore the next time the file is loaded, the ADL program will also be loaded and finally stored into the ECU. Once the ADL is written to the ECU, the additional description will not be available from the ECU as this is only stored in the *.ads ADL files and not in the ECU.

Identification of ADL For future identification the following ADL information is available:

Explanation of the lines: Instruction set version The ADL interpreter version number in the ECU software ADL target The target ECU type, 1 is TEBS before software version

521, and 7 for 521. Other figures are associated with other electronic systems.

ADL program Identifies the functionality of the ADL software. Is ADL program loaded Indicates that a valid ADL file is loaded into the ECUtalk

memory. The ADL was either read from an ECU or loaded from a file.

Clearing the ADL Program An ADL control function can be removed from the ECU with the use of Clear ADL. The change will take effect when the new configuration is written to the ECU. If the ADL is cleared but not the associated auxiliary input or output parameters, ECUtalk will display a warning before attempting to store the parameter set into a file or ECU.


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Chapter 6 System Check Pages

The system check will be opened by a click on the icon shown in the following figure.

To carry out system checks, ECUtalk will over-ride the operation of the TEBS to enable checks of the configured functions to be carried out. However, there are certain limitations that must be observed as follows: 2S/2M and 4S/2M System Configurations:

2S/2M A braking demand must not be present and all wheels with wheel speed sensors must

be stationary prior to any check being carried out. 4S/2M A braking demand must not be present and at least one of the axles equipped with

wheel speed sensors must be stationary prior to any check being carried out.

4S/3M Configurations:

4S/3M A braking demand may be present and any axle installed with wheel speed sensors may be rotating prior to any check being carried out.

Note: Failure to observe these conditions will result in the specific check not being carried out and/or

a fault being recorded. Certain options within ECUtalk automatically suspend control from the TEBS when specific tests are carried out, allowing direct or indirect switching of the functions/devices. When checks are made of auxiliary functions, initially the function is controlled by the ECU but can be switched to manual direct or indirect control. When moving between windows of the system check, the system control state is always returned to control from the ECU, therefore any previously energised valves are turned off, any output signal is cleared and simulated speeds or pressures are returned to zero. The following table defines the tests that may be carried out during System Check: Test Configuration Pressure component check Always present irrespective of the system configuration Wheel speed sensor checks Always present irrespective of the system configuration Auxiliary output checks Always present when a specific auxiliary function is configured Axle modulator test Only available when 4S/3M ABS is configured Auxiliary inputs check Tests can only be carried out for Pad Wear, Traction Help , Disable lift axle

control and Advanced LAC irrespective of whether other sensor inputs are configured

RSP installation test Always present when RSP is configured Power supply and WL test Always present irrespective of the system configuration


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6.1 Pressure Component Check

In the Pressure component check window of the System Check section, it is possible to simulate the operation of the load sensing function and apply specified pressures to the left and right brakes. However when any pressure component check is being carried out the following conditions apply: 2S/2M: A braking demand must not be present and all wheels with wheel speed sensors must be

stationary prior to any check being carried out. 4S/2M: A braking demand must not be present and at least one of the axles equipped with wheel

speed sensors must be stationary prior to any check being carried out. 4S/3M: A braki

ecu - knorr-bremsesfn.biz · ecu-packages must be uninstalled, the corresponding checkbox must be...

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