Display & Log Unit. Mikael Larsmark. November 22, 2006

Transcription

1 Display & Log Unit Mikael Larsmark November 22,

2 Contents 1 Introduction 3 2 Installation Hardware Software Installing the FTDI USB driver Java(TM) 2 Runtime Environment Installing the Log Downloader Features Contrast adjustment Display Data logging Using the logging functions Using the Log Downloader The log file Using MegaTune with the DLU

3 1 Introduction The DLU (Display & Log Unit) is mainly used as an interface between the driver and the ECA (Engine Controller Assistant). Either by looking at the display in real-time or by downloading the logged data and viewing it afterwards. This enables the driver to see the engine status, if it gets enough fuel, if it has the amount of boost wanted from the turbo charger and so on. It is also used as a communication interface between the ECA and the computer software MegaTune, when adjusting the ECA. No external sensors can be attached to the DLU, it can only show the different measurements made by the ECA. Read the ECA manual for more information regarding this. 3

4 2 Installation 2.1 Hardware You can order different bottom plates depending on which motocycle/snowmobile you wish to install the DLU on. Do not mount the DLU at places where it will be exposed to excessive heat. Even though the device was built to withstand water you might want to avoid having it mounted at places where the water with stay put. You might also need to adjust the contrast depending on the mounting angle of the display, this is described later in the manual. After the unit has been mounted you need to connect four cables to get it working. The black cable should be connected to ground (either on the chassie or to the battery) and the red cable should be connected to +12V. I suggest that you connect the ground and +12V together with where you connected the ECA. Remember that the +12V cable should be connected after the ignition relays and not before! The other pair of cables that you need to connect are the CAN bus cables. The yellow cable should be connected to the ECA pin 21 (CAN High) and the green cable should be connected to the ECA pin 22 (CAN Low). If the cables were not long enough there is no problem to make them longer but make sure that you isolate them properly so that you don t shortcut anything. 2.2 Software All the software installations are explained for windows Installing the FTDI USB driver When you plug the DLU into the USB connector on your computer a message might appear saying that a new device was found. This means that you will need to install the drivers for it to get it working. A description how to do this is in a PDF-file on the CD which followed the DLU package. The file is in the folder named USB driver installation guide. Select the file which corresponds to the operating system you are using and follow the instructions Java(TM) 2 Runtime Environment To run the Log Downloader you will first need to install the Java(TM) 2 Runtime Environment. On the CD which followed the DLU package you will find version which has been successfully tested with the DLU and is what we suggest that you use. Start the installation and follow the instructions. 4

5 2.2.3 Installing the Log Downloader To download logs from the DLU you need to use the Log Downloader. This software is written in Java and need the Java(TM) 2 Runtime Environment to work. If you have not installed this then check the previous instructions how to install it. On the CD which followed the DLU package there is a folder named Log Downloader. You can either use the software from the CD or you might want to copy the folder to your hard drive. You can create a shortcut to the Run.bat file in this folder and place on your desktop or start menu. This will make it easy for you to start the software without needing to browse through folders each time you wish to use it. 5

6 3 Features 3.1 Contrast adjustment If you wish to adjust the contrast on the DLU you need to hold down the up or down button. About 2 seconds after you pushed the button the contrast voltage will start to decrease or increase depending on which button you pressed. When you are pleased with the contrast you just release the button and the current contrast value will be saved. 3.2 Display There are numerous different variables to view that is sent from the ECA. These different views can be chosen by pushing the up and down buttons on the DLU. The most important variables are possible to view full screen while some of the less important ones are only viewed together, in what we call combination menus. Figure 1: DLU showing the lambda value Figure 2: DLU showing the one of the combination menus 1. Screen 1 - Full screen view of the Lambda value 2. Screen 2 - Full screen view of the Air to Fuel Ratio 3. Screen 3 - Full screen view of the RPM 6

7 4. Screen 4 - Full screen view of the Manifold Air Pressure 5. Screen 5 - Full screen view of the Exhaust Gas Temperature 6. Screen 6 - View of RPM, MAP and Lambda 7. Screen 7 - View of Manifold Air Tempareture (MAT), Battery Voltage (BAT) and the Barometric pressure (Baro) 8. Screen 8 - View of Throttle Position Sensor (TPS), EGO and the Air to Fuel Ratio (AFR) 3.3 Data logging The DLU is able to save all data sent from the ECA at a rate of 10 times per second and up to about 350 minutes. All this data can later be downloaded from the memory chip through the USB port with a JAVA software. Here follows a description how to use the logging system of the DLU Using the logging functions To start the logging you press the menu button on the DLU. A menu will appear on the screen where you have the option to select Start, Stop or Clear. Navigate through this menu by pressing the up or down buttons and press start. This will start a new logging session which will continue until you press stop in the same menu system. Remember that you always need to press stop when you are finished with a logging session, otherwise the log session will not be saved. If you wish to remove all the logged data from the DLU you press the Clear option in the menu system. This will erase all the logs currently on the memory chip and free up all the space for future logging. If you wish to exit the logging menu you press and hold down the menu button until the previous data is shown on the display. The time you need to press the button is approximately 2 seconds Using the Log Downloader To start the Log Downloader you need to press the file that is named Run in the Log Downloader folder. This will start the program and the following screen will appear 7

8 Figure 3: The Log Downloader main screen To connect to the DLU you select the port that the device is connected to. If you are not sure about this you can check this in the device manager. Go to Control panel - System - Hardware - Device Manager and select the option named Ports (COM & LPT). The port which the DLU is connected to should be named USB Serial Port (COM x), where the x is the number of the COM port used. Select this COM port in the Log Downloader and press the Connect button. If the correct port was chosen the DLU replies with a message saying that the device was connected successfully. You can also see that the MC Xpress logo is displayed on the DLU display window. Now when the Log Downloader has established contact with the DLU you are able to either clear all the logs in the memory or download the logs. To download the logs you click the button saying Download log. This will launch a file dialog which asks where you wish to save the file. When you have found the place you wish to save it and given it a filename you press the button named Save. The software will now start to download the log and a message will appear when the log has been successfully downloaded. This might take a few minutes if there was a big amount of data saved, have patience and wait for this dialog before doing anything else. When the log has been downloaded you can browse it with whatever software you wish to use. Most people prefer to use Excel since it has the ability to draw graphs, but you can also use a regular text browser like notepad. CAUTION: After you have downloaded the log you must exit the Log Downloader software by clicking Quit in the drop down menu. This is to reset the DLU to the correct baud rate! If this is not done you will not be able to connect to the DLU again without toggling the power of the device. Information about the saved file is found later in this manual The log file The downloaded log file is saved as a regular text file. You can either browse it by using Notepad, Wordpad or similar text browser or you can paste all the data into for example Excel by Microsoft. The first line in the log file shows when the log file was downloaded, not the time the 8

9 data was logged! The second row is a description of the different columns in the log file. All the different sensor data sent from the ECA is shown in this file. The first column of the file shows what we call the log index. This is a number that shows which log session the data corresponds to, for example the first log session started is assigned with number one, the second session is assigned the number two and so on. The second column shows the elapsed time in seconds from when the logging session was started. More information regarding the data is found in the ECA manual. 3.4 Using MegaTune with the DLU If you wish to adjust the settings in the ECA you will need to use the DLU as a communication interface towards the ECA. All information about how to use MegaTune is found in the ECA manual. 9