Problem with lashup

What are the steps you are following?

If you follow the TMCC instructions to the T it should work.

I'm assuming your using TMCC.

he has posted in the DCS forum

 lash-ups must see the watch dog signal on power up else they won't move, however it seems your problem is a little different, the lead engine will move. (back to square 1)

That's why I asked him for his steps to build the lash up.  I figured it would be easier to see if he was going wrong, rather than try to guess.  I'm guessing he has a day job and will be back online in the evening. 

I had this same issue the very first time I ever made a lashup in DCS. I deleted the lashup and started from scratch and it worked.

Sorry guys - My power went out last night from a storm shortly after I posted this & I've been tied up at work this morning.  Just to clarify, For this - I'm using DCS with MTH engines.  I have some TMCC engines, but everything is still run via DCS. 

here are the exact steps I'm doing - 

2 engines are placed on the track

track power is turned on

on the DCS remote - 

Menu/Advanced/Create Lash Up/MTH Lash Up/Add Engine/Pick engine/Head Engine/Fwd/Add Engine/Pick Engine/Tail Engine/Reverse/Lash Up Name/Press 3 on the keypad to start up lashup

both engines start up & are online.  Functions work as they should for a lashup - couplers, lights, horn, bell, etc.  

Go to move them out & only the front engine moves.  I've tried with different engines, same result. Also tried to change the address of the lashup - same result.

Any idea?

Are both engines in the active list when you go to your lashup?

Yes, both the engines I'm picking are in the active list

  With the 2 engines uncoupled but close together what happens when you go to your lashup?

Does the rear engine operate correctly when it's out of the lashup?

If multiple engines do the same thing when attempting this, it seems something isn't right.

Have you tried selecting the lash up and starting it up that way, making sure you have not selected the lead engine somehow? (If that doesn't work, for a test what happens if you delete the lash up and reverse the two engines?) Once in a while we have had lash ups with horn and bell in both engines, no idea why, the others only head light and coupler work on trailing engine.

DCS level and engine numbers? One TIU?

Also does your remote display (L) beside of your lashup?

Chris,

You are not alone in this, I've been having similar problems with my lashups on Proto 3.0 diesels. They work fine separaetly, but in a lashup they will do everything except move.

Deleted then re-added several times finally gets them to work together, but upon shutdown and idle for a while, the problem starts all over again the next day. Yes, I have updated DCS to 4.30 and am beginning to wonder if it is a glitch in the updgrade?

What rev. in DCS does your's show?

My DCS is 4.10  ( I know I need to update it) I dont think that would cause the issue though.   I have 20 different MTH engines I've tried this with. All of them work correctly when running as a single unit.   When the lashup is created, It does show the (L) next to the name

I've tried swapping the engines around & the trailer still sits dead.  Yes, I'm using 1 TIU to 2 tracks via the variable outputs.  DCS is 4.10 Engines are in the 1-20 address range

Is your remote 4.10 as well?

When you scroll to your lashup with out starting and operate your dir button do you hear relays clicking in both engines?

Have you done a signal check?

Have that very set up at a friends house. Very strange, if multiple engines all do the same thing seems like a software issue.

Leaving them uncoupled and a few inches apart, if you make a 3 unit lash up does the center engine move?

  Is your TIU accessible to check all connections and also feeds to your rails?

Yeah. I checked that. I don't have any other issues w/ the TIU. Separately , all the engines run fine on either track

I haven't tried a 3 unit one.  Let me do that now. I'll report back!

btw - really appreciate all the help

ok just tested it w/ 3 engines.  SD70ACe, ES44AC & SD45-2.   SD45-2 is the lead, ES44AC is the middle & 70Ace is the trailing.  The middle & trailing unit run, but the SD45-2, the lead unit will not respond to throttle. All other functions work though - couplers, lights, horn, sounds as if it was a working 3 unit lashup

Do you have access to another TIU and matching remote?

That is weird!!! You could do a tiu feature reset.  I don't think there's that much stored in the tiu.( record playback and custom sounds) I might even try it tethered with the curly phone cable.  You know about the watch dog signal and lash-ups   right?

Proto-2? proto-3?

What version is the TIU? Light bulbs or filters?? What type of track?

I believe the TIU stores or controls a lot of info. There was a post about this when the computer controlling program was written by Mark.

 I have a feeling it maybe something else though. What is your power? Gauge of wire? Maybe something is causing a power loss at the rails? even dirty wheels???

 I run nothing but lash-ups and never saw this one.

The extra engines aren't getting the command for some reason. Are any accessories attached to track power?

 Update: I should have stated that I have seen engines not respond in a lash-up. Usually it's in an area of the layout with weaker signal and one or two engines didn't get the command.

I would try a lash-up on a test piece of shorter track. You're losing signal somehow. I'd bet it's in the layout.

Christopher,

I'm suspecting a DCS watchdog issue of some kind. Try the following: 

• Replace the connection to the layout at the TIU channel output with a test track. This should be a section of track big enough to hold a lashup.
• Disconnect all other channel outputs from the TIU.
• Place a known problem lashup on the test track, owner up the track and see if it works correctly and consistently.

Christopher,

Don't use a loop, just a use a 3' section of track.