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OBD Channels:

The OBD Channels feature lists all the vehicle parameters that can be accessed via the OBD interface, including sensor data and vehicle status information. Each channel is associated with a specific Header, Command, Name, and Equation that define how the data is retrieved and processed. This setup allows users to monitor real-time data from the vehicle, such as:

  • Maximum value for Mass Air Flow sensor

  • Fuel Type

  • Ethanol content

  • Fuel pressure

  • Intake air temperature

  • Throttle position

  • Engine oil temperature

Each channel includes an Equation that converts the raw OBD data into meaningful physical quantities like °C, Nm, kPa, etc. These real-time data streams help operators monitor the vehicle during testing and provide critical data for analysis and diagnostics.

OBD Settings:

In the OBD Settings section, users can configure the OBD system’s interaction with the vehicle. This section includes several key options:

  • Enable OBD System: Activates the OBD functionality to retrieve real-time data from the vehicle.

  • OBD Interface Type: Allows the selection of the appropriate OBD interface type, such as USB or CAN.

  • Protocol: Set to Automatic or manually select a specific OBD protocol (e.g., ISO, CAN).

  • Query Delay: Defines the delay between each OBD query to avoid overloading the system.

  • Automatic CAN Headers: Automatically configures CAN headers when working with certain OBD CAN systems.

  • Log Communication: Logs all OBD communication for later analysis or debugging.

  • Force Read on All Channels: Forces the system to read data from all OBD channels, ensuring complete data capture.

  • Read Diagnostic Trouble Codes: Automatically reads DTCs (Diagnostic Trouble Codes) after establishing the OBD connection.

  • Clear Diagnostic Trouble Codes: Provides the option to clear fault codes after diagnosing vehicle issues.

These settings allow users to tailor how the OBD system communicates with the vehicle’s ECU, ensuring smooth and accurate data acquisition during testing.

OBD Communication Monitoring:

The OBD Communication Monitoring feature provides real-time monitoring of the OBD communication status. Users can view important diagnostic data such as:

  • Socket State: Displays the current connection status, including any errors if the connection fails.

  • Protocol Status: The system automatically detects and displays the active OBD protocol to ensure proper communication with the vehicle.

  • Error Counter: Logs the number of communication errors to help identify and troubleshoot any potential connection issues.

This monitoring feature ensures the system is properly communicating with the vehicle, helping users identify and resolve communication errors in real time.

With the OBD functionality, users can integrate the vehicle’s real-time data into the dynamometer testing process, enabling detailed data acquisition, monitoring, and diagnostics. This feature greatly enhances the precision and efficiency of the testing process by providing real-time access to critical vehicle parameters.

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