JMRI: Error Messages and Codes
- 301
- No locomotive detected.
- 302
- Programmer busy.
- 303
- Requested operation not implemented in command station.
- 304
- Aborted by user.
- 305
- Confirm failed.
- 306
- Timeout talking to command station.
- 307
- Unknown error.
- 308
- No acknowledge from locomotive.
- 309
- Short circuit on programming track.