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New Product Release | TOSUN Officially Launches CAN Bus Conformance Test System

CAN bus conformance test system

CAN FD/CAN bus conformance test system.In the hardware system based on TOSUN independent research and development of the bus analysis toolIt is equipped with standard peripheral instruments such as programmable power supply, oscilloscope, digital multimeter, etc. It is equipped with interference meter, conformance test chassis and programmable power supply;Write test scripts in software based on TSMaster to implement the test logic required by the specification.Through the programmed invocation of the hardware system, it can automate the conformance test testing of the physical layer, link layer and application layer (network management, UDS diagnosis, flashing, routing) of CAN FD/CAN nodes for automotive parts and generate test analysis reports in customized formats.

Why does the bus need to be tested for conformance?
With the rapid development of new energy vehicles and intelligent vehicles, the number of CAN FD/CAN/LIN/FR/Ethernet network nodes in vehicles is increasing, and the whole vehicle network is becoming more and more complex. According to the characteristics of the bus network, any one of the nodes involved in the communication parameters are inconsistent or fault problems will affect the communication quality of the entire network, and in serious cases, even cause the paralysis of the entire network, therefore, the international standards organization issued a series of conformance test specifications (such as ISO16845 for the CAN FD/CAN network) used to constrain the development of the network communication nodes. Quality. For OEMs, passing the bus conformance test specification and obtaining the certification report are the necessary conditions for parts access; for parts companies, the concept of conformance test should be established during the development and design process, and conformance test should be added to the product development process.


  • 1
    One device for conformance testing and network automation testing related content

    high degree of integration

  • 2
    Enable automatic testing with a single click, and automatically generate detailed test reports upon completion

    high degree of automation

  • 3
    Writing and executing test cases based on TSMaster software makes it easy to expand new test cases, modify test report templates, or add other applications.


  • 4
    High reusability of scripts, the parameters used for testing are independent of the scripts and configured separately, simplifying the workload of adapting to different projects.



CAN Conformance Test References

  • iso 11898-1:2015
  • iso 11898-2:2016
  • ISO 11898-3:2006
  • ISO 11898-4:2004
  • AUTOSAR_SWS_CAN Network Management_R22-11
  • ISO 14229-1:2020
  • iso 16845-1:2016
  • SAE J1939

Main Test Cases

Standard Release Test Cases - Based on ISO 11898
  1. Physical Layer Testing
    Termination resistor, CANH dominant output level, CANH recessive output level, CANL dominant output level, CANL recessive output level, CANDIFF dominant output level, CANDIFF recessive output level, rising edge, falling edge time, minimum and maximum ECU normal communication power supply voltage, ground offset, signal symmetry, bit time

  2. Data Link Layer Testing
    Sample Point, Bit Width Tolerance, Load Test-Short Burst Message Reception, Load Test-100% Bus Load Message Reception
Extensible Test Cases
  1. Interaction Layer Testing
    Cyclic message sending cycle detection, event-based message sending test, enable message sending test, cyclic event-based message sending test, cyclic enable message sending test

  2. Fault Tolerance Testing
    Bus Off Recovery Policy Test, Undervoltage Test, Overvoltage Test, Ground Failure, Power Failure, CANH Disconnect, CANL Disconnect, CANHL Disconnect, CANH to Ground Short, CANL to Ground Short, CANHL to Ground Short, CANH to Power Short, CANL to Power Short, CANHL to Power Short, CAN_H and CAN_L Short

  3. Communications diagnostic testing
    Diagnostic Initialization Time Test, Diagnostic High Voltage Range Test, Diagnostic Low Voltage Range Test, Diagnostic High Voltage Recovery Time Test, Diagnostic Low Voltage Recovery Time Test, Bus Off Fault Code Test, Timeout Fault Monitoring Test in Bus Off State

  4. CAN Bootloader Flashing Test
    Normal download test without application program-10V, Normal download test without application program-12V, Normal download test without application program-16V, Normal download test when application program is valid-10V, Normal download test when application program is valid-12V, Normal download test when application program is valid-16V, Normal download test when application program is invalid-10V, Normal download test when application program is invalid-16V. Communication interrupt test before memory erase, Communication interrupt test during data transfer, Skip secure access test, Invalid request download address test, Source file content changed test, Same block number test, Skip block number test, Skip data transfer test

  5. Autosar_NM network management test
    Network Management Address Range Test, BSM Status Test, BSM-RMS NM Wakeup, BSM-RMS Local Wakeup, RMS-NOS-RSS-NOS Local Wakeup, RMS-NOS-RSS-NOS NM Wakeup, RMS-RSS-NOS Local Wakeup, RMS-RSS-NOS NM Wakeup, RMS-RSS-NOS NM Wakeup, NOS-RMS NM Wakeup, NOS -RMS local wake-up, RSS-RMS NM wake-up, RSS-RMS local wake-up, RMS-NOS-RSS-PBSM-BSM NM wake-up, RMS-NOS-RSS-PBSM-BSM local wake-up, RMS-RSS-PBSM-BSM NM wake-up, RMS-RSS-PBSM-BSM local wake-up, RMS-RSS-PBSM-BSM local wake-up, RMS- NOS-RSS-PBSM-RMS NM wakeup, RMS-NOS-RSS-PBSM-RMS local wakeup, RMS-RSS-PBSM-RMS NM wakeup, RMS-RSS-PBSM-RMS local wakeup, RMS-RSS-PBSM-RMS local wakeup

  6. UDS Diagnostic Test Cases
    Diagnostic Tests under Default Session/Diagnostic Tests under Extended Session
    Diagnostic Tests Under Programming Session - Without SBL / Diagnostic Tests Under Programming Session - With SBL
    The above 4 items are included: 10 service, 11 service, 27 service, 28 service, 29 service, 3E service, 85 service, 86 service, 87 service, 22 service, 23 service, 24 service, 2A service, 2C service, 2E service, 3D service, 14 service, 19 service, 2F service, 31 service, 34 service, 35 service, 36 service, 37 service, 38 service, 84 service, 36 service, 37 service, 38 service. Service, 84 Service
    CAN network transport layer test under APP
    CAN network transport layer testing under FBL - SBL not supported
    Transmission Layer Testing of CAN Networks under FBL - Supporting SBL

Software Testing Interface

  1. Test Parameter Configuration Interface
  2. Test Case Screenshot

  3. Screenshot of test message output

  4. Test Report Screenshot

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