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  • Writer's pictureInflux Technology

Streamlining Diagnostics for Vehicle ECUs: UDS on the Rebel LT

The Rebel LT data logger from Influx is a valuable tool for vehicle engineering teams working with UDS (Unified Diagnostic Service) protocols. This article explores how the Rebel LT, combined with Dialog software, simplifies UDS logging and empowers the automotive industry's comprehensive diagnostics for Electronic Control Units (ECUs).


UDS is a well-defined protocol encompassing both off-board and onboard diagnostics. Despite being a diagnostic tool, it is also used for data logging. It resides on the application layer of the OSI model, with various ISO standards governing its implementation on different communication mediums. The Rebel data loggers support ISO 14229-3, which is specific to UDS on CAN (Controller Area Network).


Benefits of Using Rebel LT for UDS Diagnostics:

The Rebel LT data logger offers distinct advantages for UDS-based diagnostics:

  • Simplified Protocol Selection: The user can specify the diagnostics protocol, choose the relevant ISO 14229 preset and customise presets.

Influx Technology's Dialog software Simplified Protocol Selection: The user can specify the diagnostics protocol, choose the relevant ISO 14229 preset and customise presets.








Influx Technology's Dialog software Simplified Protocol Selection: The user can specify the diagnostics protocol, choose the relevant ISO 14229 preset and customise presets.

Streamlined ODX File Handling:

  • Import ODX file: Effortlessly import the ODX file to retrieve protocol settings.

Influx Technology's Dialog software Import ODX file: Effortlessly import the ODX file to retrieve protocol settings.

  • Manual PID addition: Alternatively, manually add specific PIDs (Parameter Identifiers).

Influx Technology's Dialog software Manual PID addition: Alternatively, manually add specific PIDs (Parameter Identifiers).

  • Selective PID import: Choose the desired PIDs for import, including multi-selection and customised polling rate configuration. Eliminating the need for individual PID entry, request, and decoding via DBC (Diagnostic Bus Configuration). Dialog offers drag-and-drop functionality to import ODX files containing PIDs.

Selective PID import: Choose the desired PIDs for import, including multi-selection and customised polling rate configuration. Eliminating the need for individual PID entry, request, and decoding via DBC (Diagnostic Bus Configuration). Dialog offers drag-and-drop functionality to import ODX files containing PIDs.

Comprehensive Data Decoding and Visualisation:

  • Decode data: Effortlessly decode data and save it as physical values or view it live on an oscilloscope.

Influx Technology's Dialog software Decode data: Effortlessly decode data and save it as physical values or view it live on an oscilloscope.
  • Handle multi-frame data: the Rebel data loggers efficiently decode long UDS messages exceeding 8 bytes in a multi-frame format.

 

Multi-Module and Multi-Protocol Support:

  • Connect to multiple modules: The Rebel LT can connect to up to 10 modules simultaneously.

  • Support diverse protocols: Manage up to 10 distinct protocols seamlessly.

  • Enhanced ECU handling: Interact with ten different ECUs on the same CAN bus, utilising ten tester IDs and ten module IDs.

  • User-Friendly Configuration: The intuitive GUI (Graphical User Interface) within Dialog software empowers users to:

  • Configure communication rates: Set communication rates directly within the software.

  • Edit PID details: Modify PID details with ease.

 

Additional Services Supported:

  • 0x19: Read DTC via trigger: this service allows a diagnostic service engineer to read diagnostic trouble codes (DTCs) from a vehicle or a specific ECU or node. Using a Rebel device with the DiaLog software, the user can set custom triggers based on data being logged, read DTC on trigger, decode the data and facilitate viewing of that data, unlike any other dataloggers in the market.

Influx Technology's Dialog software 0x19: Read DTC via trigger: this service allows a diagnostic service engineer to read diagnostic trouble codes (DTCs) from a vehicle or a specific ECU or node. Influx Technology's Dialog software 0x19: Read DTC via trigger: this service allows a diagnostic service engineer to read diagnostic trouble codes (DTCs) from a vehicle or a specific ECU or node.
  • 0x22: Read by identifier: Rebel loggers and the DiaLog software enable simplified UDS service data logging. Eliminating the need for manual configuration creation and decoding. Access ECU's info (part numbers, sensor data, etc.) using 0x22 Read Data by Identifier. DIDs (0-65535) link data to specific values (e.g., VIN = 61840d). Unlike regular CAN signals, DIDs provide information for service tools, not ECU functions.


  • 0x23: Read by memory address: Rebel data loggers with Dialog software enable reading data from the physical memory at the provided address. Unlike standard tools, Rebel tackles 0x23 requests without a DBC file. DiaLog translates the raw data into clear signals on its graphical interface for easy viewing. The advantage of using the Influx Rebel Dataloggers is that it focuses on insights rather than manual decoding, as users can drag and drop measurements from their A2L files.


  • 0x2A: Read Data by Identifier Periodic: Rebel data logger values are sent periodically by a control unit without manual decoding. The values to be sent must be defined only using the "Dynamically Define Data Identifier".


  • 0x2C: Dynamically Define Data Identifier: This service offers the possibility of fixing a device-specified Data Identifier (DID) pool to configure another Data Identifier. Create new DIDs by combining existing ones or using specific parts, all without manual decoding.

0x2C: Dynamically Define Data Identifier: This service offers the possibility of fixing a device-specified Data Identifier (DID) pool to configure another Data Identifier. Create new DIDs by combining existing ones or using specific parts, all without manual decoding.

The Rebel LT data logger and Dialog software allow vehicle engineering teams a seamless and efficient UDS experience. It simplifies protocol selection, streamlines ODX file handling, offers wide-ranging data decoding and visualisation, and provides robust multi-module and multi-protocol support. The user-friendly GUI within Dialog software also grants effortless configuration, making the Rebel LT an invaluable asset for streamlining diagnostics across automotive ECUs.


 

Check out our Rebel LT: Advanced Diagnostics with UDS and XCP! Ideal for ECU Diagnostics.


Influx Technology's Rebel LT, great for UDS and XCP Data logging

The Rebel LT is more than just a data logger, it's your gateway to understanding your vehicle's true potential. This powerful tool equips engineers, researchers, and developers to gain deeper insights into their vehicles' inner workings.

Go beyond the basics: Unlike standard OBD tools, Rebel LT offers advanced capabilities for in-depth diagnostics and control through UDS (Unified Diagnostic Service) and *XCP (Universal Measurement and Calibration Protocol).


Direct communication with key components: Access data directly from the source, including the Battery Management System (BMS), Electric Motor Controller, and DC-DC Converter, providing valuable insights into their health and performance.


Optimise and refine: Leverage UDS and *XCP to calibrate ECUs, troubleshoot complex issues, and optimise your vehicle's behaviour for improved performance and efficiency.



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