Atlas F7s...what am I missing

Hey Brian, have you considered putting both powered units on the same channel? That's my plan as I also have a powered A & B. Thing is, you would never run the B solo anyway, so why do a lash up?

Check your voicemail

Tmcc locos require a train address of 1 thru 9. Also Mae sure you have the control of the remote set to RS100 as they are ERR boards they have 100 speed steps. When you add the first loco it should set the consist to the correct control setting in the remote. You might have to do a factory reset on them and start over

The train address was the issue. Thanks Matt!

Elliot, I thought about that but didn't want double horns and bells. And still wanted to be able to control the powered units independently. And (as Matt has seen 1st hand) I'm an obsessive compulsive nerd about keeping the Legacy remote orderly and organized. 

When you put hem all on the same channel you get an issue where your lights get all wonky too and they don't work right and all the rear backup lights are on at odd times and stuff. Its easier to just build the train

With TMCC you can only use TR 1-9 for Lash Ups

Even in TR mode, your numberboards, back up lights and class light could possibly be out of wack, just depends on how they were wired to the ERR CC Board.

Like my SD9's where all they lights are on all the time

Here is another thread with a similar problem.   Click on the underlined phrase.

I don't know anything about TMCC. I  have the Legacy system. I have an Atlas O switcher on order. Can someone please explain the addressing. Are there only 9 TMCC addresses or only 1 to 9 work as a lash up?

Train numbers, TR1 to TR 9 can be used for lashup consist.  Engine numbers ENG  1 through 99   Cab1 hand held, original TMCC command base.

Example:  Make Train #6  All engines on the track with power applied, front light on indication, all engines in forward, even if positioned backward.

Front TR, 6, Eng, xx,  F,  Set.  (a horn will sound)  addresses the front engine.

Rear fc. forward TR, 6  Eng, xy,  R,  Set.  (a horn will sound)  addresses the rear engine if facing forward.

Rear fc. backward TR, 6  Eng, xy,  R,  DIR,  Set. (a horn will sound)  addresses the rear engine if facing backward.

All middle engines fc. forward  TR, 6 Eng, yy,  Set  ( a horn will sound)

All middle engines fc. backward  TR, 6 Eng, yy, DIR,  Set  ( a horn will sound) 

When done, break the consist,  all engines have to be assigned to TR0.    TR, 0, Eng xx, set.

Thanks Mike.

Yeah, it's so much easier to build a consist  in legacy. When building TMCC consists or "lashups" as they are sometimes called you can only use TR address 1 thru 9. However TR is also used for tracks or PowerMasters so if you have Powermasters they will use address 1 thru 4 so then you are limited to TR address 5 thru 9 

No TMCC boards or smoke units in the nonpowered As. You will have to supply your own. I used an LCRX in my F2 dummy A years ago before converting it to fixed pilot/scale coupler. ERRCo sells the mini EX board which will give you lighting and coupler control.