M.T.H. HO 4-8-8-4 Big Boy Engineer's Manual page 30

To set this consists up so that:
• The Headlight is ON in the Front engine when going Forward, OFF when the
consist is in Reverse
• The Reverse light and headlight is OFF in the Rear engine when the consist is
going Forward, headlight is ON, reverse light is OFF when the consist is in Reverse
• The Middle engine has no lights in either direction
Perform the following:
1. Build the consist using your DCC system per the DCC system's manufacturer's
instructions. In many newer systems you have the ability to tell the system which
engine is reversed. Remember the consist address you told the DCC system to
be built at as you'll need to come back to that address to actually run the consist.
The instructions assume only CV19 gets the consists address and nothing more
2. Call up the Front engine on your DCC handheld; address 1 in this example
3. Select CV22 and write a value of 1. This tells the engine that it's a forward
facing engine and that you want F0 to control the FL function at the consist
address. The engine will give you two horn blasts to announce that it received
the CV change
4. Ensure F0 is deactivated at the Front engine's address. Most systems have a light
bulb icon to indicate whether F0 is active or not. Ensure that it is OFF
5. Call up the Rear engine on your DCC handheld; address 3 in this example
6. Set CV19 to 128 + the value of your consist address
• So, if your consist address is 4 you would add 128+4=132. You would write
132 to CV19. This tells the Rear engine that it's reversed in the consist. You
will get two horn blasts to announce that it received the CV change. Some
DCC systems may already do this for you but the instructions assume your
system does not. If you are in doubt then go ahead and follow step 5 as it
will do no harm
7. Set CV22 to a value of 2 to the Rear engine's address to tell the Rear engine
that you want to control its FL control with the F0 button at the consist address.
The engine will give you two horn blasts to announce that it received the CV
change
8. Ensure F0 is deactivated at the Rear engine's address. Most systems have a light
bulb icon to indicate whether F0 is active or not. Ensure that it is OFF
9. Call up the Middle engine on your DCC handheld; address 2 in this example
10. Ensure F5 and F0 are toggled OFF. You may have to toggle F5 on/off a
couple times to get the lights in sync with the DCC command station. This
will depend upon your DCC system
M.T.H. HO 4-8-8-4 Big Boy Steam Engine
30