How to Use

A practical workflow guide: load a DBC, explore messages/signals, edit safely, and save.

1) Open a DBC

  1. Launch DBC Utility.
  2. Choose View DBC (inspect) or Edit DBC (modify).
  3. Select a .dbc file. Recent files appear on the home screen.

2) View tab: browse & inspect

  • Tree view: Messages at the top, signals nested under each message.
  • Details panel: Select an item to view properties.
  • Search: Find messages/signals/frame IDs quickly.

3) Edit tab: modify messages & signals

Messages

  • Add/edit/delete messages.
  • Edit on double-click (where supported in your version).
  • Reorder and duplicate (v1.0.2 notes).

Signals

  • Add/edit/delete signals inside a message.
  • Common fields: start bit, length, endianness, signedness, scale/offset, min/max, unit, receivers, comments.

4) Save safely

  • Save overwrites the current file.
  • Save As writes to a new path.
  • The editor logic creates a backup before saving and cleans it up after a successful write.

Troubleshooting

  • File won't load: ensure it ends with .dbc and is valid.
  • Can't save: check file permissions and whether the file is open elsewhere.
  • Performance: use search filters on very large DBCs.