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    CANoe .J1939

    Development & Test Tool CANoe .J1939

    Simulation, Development and Test of J1939 Systems

    CANoe .J1939

    SAE J1939 is a communication protocol based on CAN for real-time data exchange between control units in the area of commercial vehicles. It originates from the international Society of Automotive Engineers (SAE) and operates on the physical layer with high-speed CAN per ISO 11898. J1939 is a multimaster system with decentralized network management and primarily connection-less communication.

    Using CANoe .J1939 from the very beginning allows the developer to use the same tool through the entire development process, from planning to realization. The models created in the design phase and checked by simulation are continually reused in other forms. It is possible to use the models to verify the implementation and later for functional end-of-line testing.

    It is not necessary for the user to become familiar with the J1939 protocol, instead concentrate on the actual task of creating a simulation or data analysis. This significantly increases the quality of the development process and the efficiency of data analysis.

    Advantages

    • Integrated configuration, analysis, simulation and test tool for electronic components in commercial vehicles from a single source
    • Extended CAPL interface for modeling J1939 systems
    • Fast device development by use of databases with predefined standard objects
    • Comfortable programming interface reduces the familiarization with the J1939 specification

    Gallery

    所有 图片 视频
    Aftertreatment
    System Demo
    CANdb++ Editor
    Compliance Test
    Truck Overview
    Tire Pressure

    Additional Functions

    CANoe .J1939 expands the standard functionality of CANoe with:
    Support of the transport protocols BAM, CMDT and Fast Packet
    Graphic display of the network nodes (scanner)
    Protocol-specific display, checks, interpretation, filters and search functions in the Trace window
    J1939 Filter in the measurement setup
    Rapid simulation of ECUs
    Expanded database
    Diagnostic Trouble Code Monitor (DTC Monitor)
    OBD Inspection and Maintenance Monitor
    Diagnostic Memory window
    J1939-82 Compliance Test (revision 2015)
    GNSS Simulator and GNSS Monitor
    Support of J1939 AUTOSAR 4.2.2 System Descriptions

    Highlights
    Version 15

    • Updated J1939.dbc allows easy simulation and analysis of almost all PGs defined in the current J1939 Digital Annex (March 2021)
    • Support for Functional Safety according to J1939-76 (dedicated SHM) and according to AUTOSAR E2E Profile 2 (for messages with built-in checksum).
      • Simulation / fault injection with J1939 IL
      • Configuration via DBC
      • Analysis and stimulation in CAPL
      • Detection of protocol violations in the trace window
    • J1939 Modeling Library (J1939 IL).
      • Provides better handling for J1939 transport protocol violations, largely consistent with the J1939-82 Conformance Test (2015)
      • can automatically search out a free address in case of an address conflict
      • provides better support for AUTOSAR Database
    • GB/T 27930
      • The new sample configuration GB/T 27930 (2011) simulation simulates a charging station and a battery management system communicating with each other according to GB/T 27930 (2011)
      • Better detection of protocol violations in the "Charger suspends the charging process" phase

    Application Areas

    Because of its simulation capabilities, CANoe .J1939 is well-suited to the development, design and verification of J1939 networks. Its practical application as a diagnostic and debugging tool is just as feasible as its use in simulating the rest of the bus during startup or assembly. Especially the J1939-82 Compliance Test Unit (2015) supports the user in preparing integration and module tests.

    Since the SAE J1939 specification is the basis for other networks such as

    • NMEA 2000®,
    • ISO 11783,
    • ISO 11992 (Truck & Trailer),
    • FMS (Fleet Management System) and
    • GB/T 27930,

    the Option can be used in those applications as well. In combination with further CANoe options it offers a uniform approach to systems that extend across bus boundaries with a common time base.

    - Analysis

    Trace Window

    CANoe .J1939 allows the user to monitor communication on the symbolic level in a trace window, where the parameter groups transmitted are displayed. All relevant information is output in separate columns, such as the parameter group number, priority, source and destination addresses as well as protocol interpretation in text form.

    Individual subject areas such as transport protocols, network management and diagnostics are color coded. In particular, highlighting of protocol violations help to assure J1939-conformant communication.

    Additional functions such as the topic-based analysis filter, context search and the column filters of the trace window make it easier to find specific parameter groups.

     

    Protocol-specific Information
    Analysis Filter
    Context Search

    Trace Window: Protocol-specific Information

    With use of the J1939 option, protocol-specific information can be displayed in the Trace Window.
    显示更多

    Trace Window: Analysis Filter

    Analysis filters are available for the specialized analysis of protocol ranges. These filters can be configured as Pass or Stop Filters.
    显示更多

    Trace Window: Context Search

    The context search feature makes it easy to navigate between the messages of a channel in the Trace Window (sequential mode).
    显示更多

    GNSS Monitor and Map Window

    GNSS Monitor and Map Window

    The GNSS Monitor is used for the graphical and numerical display of longitude and latitude, as well as the elevation of a GNSS message of the NMEA2000® or J1939 protocol.

    - Simulation

    CANoe .J1939 makes simulation and analysis of network data of control unit networks possible by using the J1939 communication protocol.

    The system environment is modeled by means of system variables and graphic interactive control panels. The different network nodes are simulated by the J1939 Interaction Layer based on the communication relationships in the data-base.

    In addition, various J1939 libraries are available for the CAPL programming language, which extend CAPL with additional functions.

    In the Simulation Setup, the overall system is displayed graphically with networks, devices and all network nodes.

    - Testing

    Compliance Test | Revision 2015

    Tests tools for covering test cases from the J1939-82 Compliance Specification (2015)

    To cover the test scenarios defined in the new J1939-82 Compliance document (release 2015), a test unit is provided, which is created using vTESTstudio and a specialized window. All data relevant for test execution are conveniently managed directly in the window J1939.CT_Configurator provided for this purpose.

    Detailed and exact test protocols provide a clear overview of the test procedure and results, which considerably simplifies subsequent error analysis.

    - Diagnostic

    The following components are available for easy handling of the diagnostic protocol defined in J1939:

    • DTC Monitor
      The DTC Monitor offers a simple interface to the J1939 diagnostic protocol. Without programming error codes (DTC – Diagnostic Trouble Codes) and diagnostic messages can be displayed or queried on demand. A button can be used to jump from a selected error code to the respective position in the Trace window. 
      In addition, working with Freeze Frames (extended information from fault memory) is supported. This makes the DTC Monitor very useful for emission related or powertrain diagnostics. The results can readily be exported to other applications using the Clipboard.
    • Diagnostic Memory Access
      The Diagnostic Memory Access Window (DiagMemAcc) gives the user direct access to the memory areas of an ECU. This memory may be an error memory or program code, for example. Addressing is performed with the help of parameter numbers (Suspect Parameter Numbers) or an address. The window is based on the diagnostic ser-vices DM14, DM15, DM16 and DM18. Authentication is realized with a manufacturer-specific Seed & Key DLL or a Seed & Key procedure can be implemented in CAPL. The support of diagnostic service DM13 (Start/Stop broadcast) also enables temporary reduction of the network load.
    • OBD I/M Monitor
      The “OBD Inspection and Maintenance Monitor” supports the ECU developer and integrator in emissions-related tests. It is used to initiate internal ECU tests and display their results. The Monitor is based on the diagnostic services DM5, DM7, DM8, DM10, DM21, DM26 and DM30.

    For OEM-specific diagnostic protocols, the Diagnostic Feature Set (KWP2000 and UDS) is available. This enables support of networks with dynamic ECU addresses as well.

    Functional Safety

    The Option J1939 aids in development, analysis and testing of the transfer of safety-critical data in compliance with the SAE J1939 standard.

    Analysis

    The Trace Window monitors the transfer of safety-critical data.

    Messages with integrated checksum and counter: Support in the Trace Window
    SAE J1939 Digital Annex/AUTOSAR E2E Profile 2 – Messages with Integrated Checksum and Counter

    A message with a wrong checksum or invalid value of the sequence counter is flagged as incorrect.

    Dedicated Safety Header Message: Support in the Trace Window
    SAE J1939-76 – Dedicated Safety Header Message with Checksum and Sequence Counter

    In the case of messages transferred in accordance with SAE J1939-76, the Trace Window also checks the time intervals.  

    Testing

    The testing of communication as per SAE 1939-76 is also supported by the Test Feature Set. By carrying out a background test, wrong checksums, invalid counter values and violations of the time intervals during a test can be detected.

    Simulation

    Messages can be configured in the database in such a way that they are automatically sent safeguarded  using the J1939 Interaction Layer. For this purpose, when a message is sent, either a dedicated Safety Header Message as per SAE 1939-76 is placed in front or the checksum and counter contained in the message are calculated. 

    CAPL

    Functions which simplify the calculation, setting and querying of checksums are also available in CAPL. 

    Transport Protocol

    Option .J1939 supports the transport protocols

    • BAM,
    • CMDT and
    • Fast Packet.

    With the use of this protocols CANoe. J1939 can reassemble the individual fragments. Communication is monitored for errors during measurement and, if necessary, warnings are output. Protocol interpretation is limited to the channel the user configured as J1939. Gateway solutions with various protocols can thus be monitored easily. Display of 29 and 11 bit CAN identifiers is supported at the same time.

    Database

    J1939 parameter groups and signals are described in a database, which already contains predefined standard objects that serve as examples. The user can expand the database using the CANdb++ editor (included with delivery). This makes it possible to define application-specific parameter groups (Proprietary PGs), for example.

    The CANdb++ Editor was specially extended for use in the J1939 environment with dialogs and additional views to make creation and verification considerably easier for the user. Parameter groups and signals thus defined can be selected symbolically in the entire program.

     

    CANdb++ Editor: Data management program for creating and modifying J1939 databases.

    Product Descriptions

    Documents
    KnowledgeBase

     

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    Videos

    Don't feel like reading? Then take a look at the videos.

    Learn to know in a step-by-step tool demonstration how to analyse the J1939 data traffic in the Trace Window of CANoe .J1939.

    Downloads

    Service Packs
    Demos
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    Training

    CANoe .J1939 Seminars

    CANoe .J1939 provides a variety of possibilities for simulating, developing and testing J1939 systems.

    But only those who are familiar with these options can fully tap the potential and save time and money.

    Take advantage of our training and education offers in order to make even more efficient use of CANoe .J1939 in your day-to-day work!

    Recommended Pages

    CANoe
    Developing and testing ECUs and entire networks on highest level.
    CANdb++
    Design environment for CAN / CAN FD networks.
    Know-how: SAE J1939
    All important information about the J1939 protocol.