Between 1899 and 1900, the Scottish Caledonian Railway (CR) purchased a total of 79 Class 812 steam locomotives, designed by locomotive engineer John F. McIntosh. The steam locomotive was originally built for freight transport, but was also used for passenger service. In 1923, all the locomotives built were transferred to the London, Midland and Scottish Railway (LMS) along with the CR. Most of the locomotives remained in active service until the late 1950s and were finally retired by 1963. The only surviving locomotive was CR 828, which is still actively used for museum tours today. F14: engine driver dialogue (different dialogues selectable with CV168 value 0-4)
F23: automatic warning system (bell/horn selectable with CV169 value 0-1)
F24: doors and windows open/close (different selectable with CV167 value 0-2)
F27: rail joints (different selectable with CV164 value 0-3)
| Key | Functions | Sound slots | Volume CVs | Volume values |
|---|
| F0 | front light | | | |
| F1 | sound on/off | 1, 2, 5, 28, 32 | 259, 267, 291, 475, 507 | 240, 240, 80, 30, 10 |
| F2 | brake function (vacuum brake) | 26 | 459 | 128 |
| F3 | whistle | 3 | 275 | 200 |
| F4 | coal shoveling | 5 | 291 | 80 |
| F5 | heavy load | | | |
| F6 | acceleration/brake time, shunting mode/shunting speed | | | |
| F7 | ejector sound off | | | |
| F8 | short whistle | 4 | 283 | 190 |
| F9 | Cylinder blowout | 9 | 323 | 60 |
| F10 | conductor's signal | 10 | 331 | 48 |
| F11 | coupling/buffering | 8 | 315 | 80 |
| F12 | light engine mode | | | |
| F13 | injector | 20 | 411 | 100 |
| F14 | engine driver dialogue | 7 | 307 | 128 |
| F15 | ESU smoke generator | | | |
| F16 | safety valve | 12 | 347 | 230 |
| F17 | flange squeal | 15 | 371 | 40 |
| F18 | soundfader | | | |
| F19 | blower | 24 | 443 | 40 |
| F20 | brake function (steam brake) | 25 | 451 | 100 |
| F21 | volume control | | | |
| F22 | water tank filling | 18 | 395 | 30 |
| F23 | automatic warning system (aws) | 22 | 427 | 40 |
| F24 | doors open/close | 19 | 403 | 70 |
| F25 | railway detonators | 16 | 379 | 255 |
| F26 | disable brake squeal sound | | | |
| F27 | rail joints | 17 | 387 | 45 |
| F28 | AUX3 | | | |
| F29 | set/release handbrake | 14 | 363 | 128 |
| F30 | wheeltapper | 11 | 339 | 60 |
Make sure that index CV31 is set to 16 and index CV32 is set to 1 before changing a volume CV.