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Chesapeake & Ohio

C&O and CSX multi lamp signals can be connected to the Signalist SC1 as shown in the below diagrams. For former B&O CSX position light signals please refer to the B&O page and for former Seaboard System CSX searchlight signals see the Seaboard System page.

Note that the lamp order on the prototype will most likely be different to what is shown here. In the C&O signal system red on the lower head(s) is not just a placeholder, in many of the aspect displays the lower head can be dark and this has a different meaning to being red.

Chesapeake & Ohio triple head connected to a SC1

Chesapeake and Ohio triple head wiring diagram


Chesapeake & Ohio double head connected to a SC1

Chesapeake and Ohio double head wiring diagram


Chesapeake & Ohio single head connected to a SC1

Chesapeake and Ohio single head wiring diagram


Note that when using the CV38=8 configuration, flashing aspects can be achieved by toggling between the solid aspect and dark. Software such as JMRI will do this automatically.

C&O

Rule

Description

Aspect No

Triple head when CV38=83

Double head when CV38=84

Single head when CV38=84

Aspect No

Single head when CV38=64

292

Stop

0

R R D

R R


8


291

Stop and Proceed

1

R D D

R D

R

0

R

290

Restricting

2

R Y D

-R Y -

-

8

-

288

Slow Approach

3

R Y R

- -

-

8

-

287

Slow Clear

4

R R G


-

8

-

286

Medium Approach

5

R Y Y



8


285

Approach (alt 1)

6

Y R D

- Y R-


1

Y

285

Approach (alt 2)

7

Y R D

Y D

-

1

Y

284

Approach Slow

8

Y Y D

-Y Y -

-

8

-

283B

Medium App. Slow

9

R Y G


-

8

-

283A

Medium App. Medium

10

R Y g



8


283

Medium Clear

11

R G D

R G

-

8

-

282

Approach Medium

12

Y G D

Y G

-

8

-

281

Clear (alt 2)

13

G R D

G R

-G

2

G-

281

Clear (alt 1)

14

G R D

G D

G

2

G

-

Dark

15

 

 

 

8

 

Key R=Red, G =Green, g=Flashing Green, Y=Yellow, D=Dark.


In JMRI use DCC Signal Mast Decoder for CV38=83, CV38=84 and CV38=64. For CV38=8 use Double Output or Triple Output for each head.


Signal reference chart for the 1969 C&O rulebook can be found at the Signals of the US website:- C&O 1969
Signal reference chart for the 1989 CSX rulebook can be found at the Signals of the US website:- CSX 1989


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