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How to Replay CAN Bus Logs

Replay recorded CAN bus messages to test your system without live CAN bus data.

Prerequisites

  • Profinity V2 installed and running
  • A recorded CAN bus log file (.csv format)
  • CAN bus adapter connected (optional for testing)

Steps

Step 1: Access CAN Replay Tool

  1. Navigate to CAN Utilities → Replay CAN Logs
  2. Or click Replay in the CAN Activity window
  3. CAN Replay window opens

Step 2: Load Your CAN Log File

  1. Click Load Log File or Browse
  2. Select your .csv log file
  3. File loads into the replay tool

Step 3: Configure Replay Settings

  1. Replay Speed: Select replay speed:
  2. Real-time: Replay at original speed
  3. Faster: Speed up replay (2x, 5x, 10x)

  4. Slower: Slow down replay (0.5x, 0.25x)

  5. Loop: Enable to loop replay continuously

  6. Filter: (Optional) Filter specific CAN IDs or time ranges

Step 4: Start Replay

  1. Click Start Replay or Play button
  2. Messages are sent to the CAN bus network
  3. Watch the CAN Activity panel to see messages being replayed

Step 5: Monitor Replay

  1. Check CAN Activity panel shows replayed messages
  2. Verify components are receiving data
  3. Check dashboards update with replayed data
  4. Monitor replay progress

Step 6: Stop or Pause Replay

  1. Click Stop to stop replay
  2. Click Pause to pause (resume with Play)
  3. Use Seek to jump to specific time in log

Tips

  • Test Without Hardware: Use replay to test dashboards without CAN hardware
  • Debug Issues: Replay logs to debug component configurations
  • Record First: Use CAN logging to record logs for later replay
  • Filter Messages: Filter replay to focus on specific CAN IDs