| Key | Function | Soundslots | Volume CVs | Volume value |
|---|---|---|---|---|
| Light | front light, dynamo | 20 | 411 | 5 |
| F1 | sound on/off | 1, 2 | 259, 267 | 128, 128 |
| F2 | whistle (5 more whistles selectable with CV48) | 3 | 275 | 128 |
| F3 | bell | 4 | 283 | 70 |
| F4 | coal shoveling | 5 | 291 | 55 |
| F5 | slow air pump | 6 | 299 | 90 |
| F6 | acceleration/brake time, shuting mode/shunting speed | |||
| F7 | curve squeal sound | 15 | 371 | 50 |
| F8 | AUX 1 | |||
| F9 | cylinder blow out | 9 | 323 | 128 |
| F10 | conductor's signal | 10 | 331 | 75 |
| F11 | coupler clank | 8 | 315 | 128 |
| F12 | sanding | 11 | 339 | 40 |
| F13 | brake release/set brake | 13 | 355 | 80 |
| F14 | station announcement | 7 | 307 | 128 |
| F15 | short whistle | 16 | 379 | 128 |
| F16 | safety valve | 12 | 347 | 128 |
| F17 | rail clank on/off | 17 | 387 | 65 |
| F18 | ash pan | 14 | 363 | 60 |
| F19 | dynamo sound off/on | |||
| F20 | injector | 23 | 435 | 40 |
| F21 | blower | 18 | 395 | 128 |