This is a definitive list of all controlled scenery items on the South Downs Railway. (Note bold numbers are the ones to activate manually; the others operate automatically from that)
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MSC8
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DCC
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Item
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Comment
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1
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501
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Clanfield windmill motor
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50Hz motor.
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1
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502
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Windmill light: yellow LED
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flickering lamp effect
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1
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503
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Clanfield church lighting
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PWM lighting output
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1
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504
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Clanfield station building lighting
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PWM lighting output
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1
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505
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Reserved for Clanfield station platform lights
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PWM lighting output
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1
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506-508
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||
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4
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525
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factory smoke generator
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on 1 minute every 5 minutes
CV9=7; CV7=127; CV17=7
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4
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526
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reserved for ladder raising servo
on when o/p 1 sequence active
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CV10=4; CV33=1
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4
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527
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fire engine lights
on when o/p 1 sequence active
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on when smoke generator on; flashing light sequence
CV11=0; CV19=4; CV36=1
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4
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528
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always on downstairs light (&3 other factory buildings)
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PWM light
CV12=2; CV20=0
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4
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529
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fire light 1
on when o/p 1 sequence active
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no PWM; flickering light; on when smoke generator on
CV13=1; CV21=6; CV42=1
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4
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530
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fire light 2
on when o/p 1 sequence active
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no PWM; flickering light; on when smoke generator on
CV14=1; CV22=6; CV47=20; CV45=1
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4
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531
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fire station flashing lights,
turned on when o/p 8 sequence is active
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CV15=0; CV23=4; CV48=128
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4
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532
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sequence for flashing light in fire station
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on infrequently (house light 2 sequence)
CV16=0; CV24=3
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5
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533
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Level crossing flashing light by Petersfield station.
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CV9=9; CV6=64 (sets blink rate)
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5
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534
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servo for barrier 1 (rear)
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CV10=4
CV58=0 (no bounce); CV60=5 (tiny off delay)
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5
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535
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servo for barrier 2 (front)
enabled when DCC command for output 2 is active
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CV11=4
CV37=2
CV65=0 (no bounce); CV62=190 (barrier down position); CV67=5 (tiny off delay)
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5
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536
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||
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5
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537
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5
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538
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5
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539
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5
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540
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6
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541-8
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shop lights in Clanfield area
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PWM lights; mix of "often on" and "less often on" sequences.
CV9=6 (DC motor); CV10-16=1 (fast PWM)
CV17,19,21,23=2 (house light 1); CV18,20,22,24=3 (house light 2, for upstairs lights)
CV32, 35, 38, 41, 44, 47, 50, 53 are random values in range 0-255
DCC gate CVs (34, 37, 40, 43, 46, 49, 52) all set to 1 so o/p 1 turns on or off all lights
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7
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549-556
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shop & house lights in Clanfield area
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PWM lights; mix of "often on" and "less often on" sequences.
CV9=6 (DC motor); CV10-16=1 (fast PWM)
CV17,19,21,23=2 (house light 1); CV18,20,22,24=3 (house light 2, for upstairs lights)
CV32, 35, 38, 41, 44, 47, 50, 53 are random values in range 0-255
DCC gate CVs (34, 37, 40, 43, 46, 49, 52) all set to 1 so o/p 1 turns on or off all lights
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8
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557-564
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house lights in Clanfield area
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PWM lights; mix of "often on" and "less often on" sequences.
CV9=6 (DC motor); CV10-16=1 (fast PWM)
CV17,19,21,23=2 (house light 1); CV18,20,22,24=3 (house light 2, for upstairs lights)
CV32, 35, 38, 41, 44, 47, 50, 53 are random values in range 0-255
DCC gate CVs (34, 37, 40, 43, 46, 49, 52) all set to 1 so o/p 1 turns on or off all lights
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9
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565-572
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Not present | |
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10
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573
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Portsmouth engine shed: not used
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10
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574
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Ports mouth engine shed door servo (Thrown=open)
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10
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575
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reserved for a yard gate servo
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10
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576
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lighting in engine shed
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10
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577
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welding in engine shed
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10
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578-580
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not used
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11
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581
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not used reserved for oil pump)
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11
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582
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Eastleigh yard access gate
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C=gate closed; T= gate open CV10=4; CV54=70; CV55=210; CV67, 57=40; CV58=0; CV59=1; CV60=64 |
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11
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583-588
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not used
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Effects are always THROWN for ON; CLOSED for OFF.
MSC8 number 4 has several outputs controlled by one operation. The smoke generator is operated by a sequence; it is on for approx 1 minute every 5 minutes. When the smoke generator output is active (i.e. for that 1 minute when the building is on fire) outputs 2, 3, 5 & 6 are activated. These then have their own sequences: to flash the fire engine lights, and to flicker LEDs to look like the fire itself.
MSC8 number 4 Output 7 has 2 sequences: a sequence that flashed the lights like a fire engine; and that whole output is turned on or off by output 8, which is on infrequently. This will give the appearance that a fire engine inside the fire station has its lights tested periodically.
MSC8 Board Locations:
| Board | Location | DCC | Power bus? |
| 1 | dropdown under Clanfield | 501 | N |
| 2 | Not present | 509 | |
| 3 | Not present | 517 | |
| 4 | Under factory | 525 | N |
| 5 | under crossing | 533 | N |
| 6 | fiddle yard | 541 | wired for |
| 7 | fiddle yard | 549 | wired for |
| 8 | fiddle yard | 557 | wired for |
| 9 | not present | 567 | |
| 10 | under Portsmouth | 573 | N |
There are two power buses for MSC8 boards. One feeds Portsmouth and Eastleigh; the other feeds Clanfield, Petersfield and the vicinity of the fiddle yard. The DC power comes from those buses. This is because the Accessory DCC bus was overloading on inrush current into the reservoir capacitors on those boards.