Legacy - TMCC Mode or Cab1 Mode for TMCC engines

TMCC Mode.

What is the difference in the two modes.  I tried both with a newly converted engine with an ERR board and I seemed to have some low speed problems in TMCC mode that got better in Cab1.  Don't understand the difference.

Bill

Cab1 sends out relative speed steps.  TMCC sends out absolute speed steps.

The R100 mode was added for ERR if you go into the menu under info for that engine.

What is the R100 difference?

R100 is for ERR boards. They have the ability to have 100 speed steps. Standard TMCC has 32 speed steps. 

Nick

Larry,

I don't want to hi-jack your thread, I'm learning how to use the Cab-2 also.  Especially with TMCC since I own several of those locomotives.

Did you load the 'generic xxxx' module?  I did.  Without it, I didn't get any of the TMCC icons shown in the owner's manual. 

What Nick Says. In addition to ERR add TAS and Digital Dynamics to the list. Basically any engine that does not have Lionel modular boards (DCDR) use Cab1 mode. Engines that do have Lionel modular boards (DCDR, DCDS) like K-Line use TMCC mode.

Pete

That's good info, I didn't know that.  Thanks, makes a difference in one of my locomotives.

what we need is a file of pictures of the cab 2 in it's various modes.

when you push the info button a bunch of tabs show on the screen.  when you turn the red knob you get to view each tab. one will be: cab1, tmcc, and legacy.  you push the button under the screen for what you want.

the generic module just make it easier.

What about K-Line with Cruise?  This description isn't very clear to me. I think it is backward.   Basically ACDR and DCDR are the boards with no cruise and just 32 speed steps correct?  TAS/ERR back EMF, DCDS boards all have extra speed steps.  DCDS runs a very large gamut of boards.  Modular is also a misnomer.  TAS is a single composite mother board with the motor driver section built into the mother board but does take modular boards (R2LC and RS boards).  All the AC and DC xx boards are stand alone that plug into the mother board via a wire harness vice pins.

I guess the real difference is whether the Motor driver has more than 32 speed step capability no?  Any of the cruise boards usually have more, either 100 Lionel based or higher for K-Line cruise.  Plus you have to factor in that these cruise boards have selectable speed steps.  So you need to match the motor drive program to the Legacy selection, no?  .G

K-Line with cruise has neither a DCDR nor DCDS so Cab1 for this.

Pete

For a TAS locomotive, what would I need: Cab 1 or TMCC?

Pete DCDS is a cruise board, so I still think some of your original statement is not correct.  Plus your original statement said use TMCC for K-line, now your saying use CAB-1?

So I go back to my statement about 32 step only versus more than 32 speed steps as the criteria, and not get too hung up on type descriptions.  G

G, If it has a DCDR or a DCDS then TMCC should work. If it doesn't have one of those two boards then best stick with Cab1. AFAIK only Lionel uses a DCDS board. I use TMCC mode with all of my Odyssey engines, no problem.

Put it another way, Cab1 will work with all engines including Legacy and 3rd party products. TMCC should work in all Lionel engines, maybe not with 3rd party stuff.

Pete

I use R100 for K-Line cruise, and I use 128 speed steps.  R100 is basically CAB1 with some changes in the Legacy display like the throttle graph and the keypad graphics.  I've never needed to get to max speed on any K-Line locomotive that taxed the first 100 speed steps.

LCRU equipped engines have absolute speed steps. Read the code in the Command Base manual.

I have found that using R100 on my 2002-2005 era F units and other engines seem to smoothes out performance. This does not apply to all TMMC engines. 

So we seem all over the map here.

So we have TMCC, CAB1, R100 Modes.  TMCC is absolute 32 step, Cab1 is relative XX Steps? R100 is relative??  100 Step.

So where are we, I know lionel must have over 20 different DCDS Code boards and such, so what are the factors or is it specific board based?  G 

CAB1 is unlimited steps, it's relative to wherever you are from the previous step.  R100 mode is really just CAB1 with some changes to how the Legacy display works, throttle graph, keypad icons, etc.  TMCC is 32 step with positive control, not relative.  Legacy is 200 step mode and Legacy 9-bit code transmission.