| Key | Function | Soundslots | Volume CVs | Volume value |
|---|---|---|---|---|
| Light | headlights | |||
| F1 | sound on/off | 1, 2, 5 | 259, 267, 291 | 50, 25, 105 |
| F2 | whistle | 3 | 275 | 128 |
| F3 | bell (short whistle selectable via CV48) | 4 | 283 | 128 |
| F4 | fan | |||
| F5 | compressor | 6 | 299 | 45 |
| F6 | acceleration/brake time, shunting mode/shunting speed | |||
| F7 | curve squeal sound on/off | 15 | 371 | 25 |
| F8 | AUX 1 | |||
| F9 | compressed air let off | 9 | 323 | 40 |
| F10 | conductor's signal | 10 | 331 | 70 |
| F11 | coupler clank | 8 | 315 | 55 |
| F12 | sanding valve | 11 | 339 | 20 |
| F13 | set brake/ brake release | 13 | 355 | 40 |
| F14 | station announcement #1 | 7 | 307 | 70 |
| F15 | locomotive start-up | 22 | 427 | 128 |
| F16 | open/ close door | 12 | 347 | 35 |
| F17 | rail clank on/off | 17 | 387 | 15 |
| F18 | station announcement #2 | 14 | 363 | 70 |
| F19 | set/release hand brake | 24 | 443 | 30 |
| F20 | panto up/down | 20 | 411 | 40 |
| F21 | sound fader | |||
| F22 | disable brake squeal sound |