Sachsische 20841 LGB loco CV Settings

G

Gorsebank

Registered
Country flag
I have just obtained an LGB Sachsische 20841 loco and in attempting to change the loco address I have managed to make a mess of the CV settings for the lighting and smoke generation.

When button 9 is pressed the front lights come on when the engine runs in reverse and the rear lights do not come on at all. If button 8 is pressed both front and rear lights operate but in the wrong direction.

The supply to the smoke generator is on at all time non of the buttons will turn it off.

I am also unsure about the setting of CV 49 and 50 should they be set to 32 or 5 since the lamps and smoke generator are both 5v.

Does anyone have a complete list of CV settings for this loco,

I assume that Decoder 1 controls the lighting and smoke together with one motor and the second decoder only the second motor. In which case only CV 1 to 4 need to be set to match decoder 1 ?

Any help would be much appreciated.

Ian
 
Further to my previous' I have spent a frustrating day trying to solve the above problem. I now think that I am having problems reading and programming the 55020 decoders.

I am using a Masoth DiMax 1200Z unit and Stellwerk Easy to program, I have programmed lots of loco and accessory decoders previously without problem but since trying to program the 55020 decoders I am having problems programming anything, I did see a warning message to the effect that the programming current was to high and asking me to turn off the non existent sound module.

Is this a known issue ?

Does the sprog 2 cope with 55020 decoders ?
 
Are you trying to program two decoders at the same time? Can you try them one at a time, which probably means removing them from the loco.

Reading two decoders at the same time is going to be problematical, they both respond at the same time and the response messages tend to corrupt each other. Writing to two decoders at the same time may work, as long as you take no notice of what comes back.

Sorry no specific experience with SPROG, 55020, or Stellwerk.
 
You will definitely need to isolate the decoders, and do each in turn..

Have you got a listing for the CV's in the 55020 decoders. - That is, what each CV does??
I can probably find a copy, but not until this evening, am out fixing a door for Bro-in-law, and taxi SWMBO across to Stourbridge today..
 
Thank you to both of you guys for getting back to me.

Firstly. I think I may have caused the original problem by trying to programme both decoders at the same time.
I have however since tried to programme each of them separately both in and out of the loco, but although when I read the CV,s they have not changed I have managed to change the loco address but still have the same initial problems.

Secondly, Yes thank you, I do have a CV list for the 55020.

Regards
Ian
 
Having thought about it for a while.. And realised it is 'basically' a 'Mallet' we are talking about.. ..

The mainboard should handle the voltage dropping for lights and smoke.. You do not need to alter dividers for this.
The DIP switches should be set to 'off' for a digital setup. - If you bought it as a digital, this should already be done.

I am unable to find a 'command list' for the functions 'as supplied' .. Is smoke on/off not 7 from memory?

Another thought.. Is the engine old enough it could have a serial board in it. - This requires F1 to be pressed 'n' times for function commands greater than one?

Of course, some (or all) of the above could be pure rubbish! Think I need more coffee!! ;)
 
Hi Philp

I was assuming that smoke on/off was 1 so I will try your suggestion of 7 tommorow.
it does seem to be operating in series mode as button 8 only effects the lighting if the loco remote is transmitting serial commands. But why does 8 effect the lighting at all ?

The dip switches are all set to off.

Please feel free to suggest anything I have run out of ideas.

Regards
Ian
 
Gorsebank said:
But why does 8 effect the lighting at all ?
Click to expand...

According to the 55020 manual that would be because of the contents of CV 52.

The contents of CV 51 specify what buttons control the smoke.

CV 53 is for the rear light.

I assume you have already been playing with these CVs?
 
Hi Cliff

Thank you for contributing.

Yes I have played with all three, 51,52 and 53, I have even swapped the values 128 and 64 between CV 52 and 53 but nothing changes.

I say that I have done this but every time I read out the CV,s they change and I have no faith in the read outs or programming that I am achieving.

This could be my problem in that I am not changing anything. But why ?
 
Do you have a Navigator, or other hand-held controller/throttle?

I only know what I have read in the last 20 minutes about the Stelwerk Easy software, but it appears there is little literature, so you have to teach/learn yourself??

If you have a throttle, we can go from there, and see if we can sort it out with you..
 
Hi PhilP

Yes I have both types of LGB throttle including the programming insert. Together with the Masoth transducer to enable them to operate with the DiMax.
 
When you are programming and reading the CVs do you have a load attached to the decoder? - you should have it connected to a motor so that it can correctly generate the feedback required by your programmer (in this case the 1200Z).

Try downloading the Massoth DCC Programming software and connect it to your 1200Z and use that for reading and writing CVs.

In one instance, I would perform a factory reset on the decoders (If I recall, on the 55020, set CV 55 to 55).
The default key to operate F1 is key 1.
 
Hi Guys

Yes, I have either removed 1 decoder from the loco and tried to programme the other in situ or have removed the decoder and added a motor as a load.

We're do I find the Massoth DCC Programming Software, I have looked in the Download area and cannot see it ?

Regards

Ian
 
Ian,

You need to register and login to gain access to the software. PM me if you have registration issues.
 
ok, you need the "Massoth DCC Programmer V1.2.48.0" which can be found under DiMAX -> DiMAX + eMOTION software.
 
Hi Again Guys

I downloaded the Massoth Decoder Programmer, but before abandoning the Stellwerk Easy software, which has been no problem in the past and which I am using for schedule control of my railway, I thought I would have one more go with it.

Success. :D

I don't know what I did differently if anything but I have now reset both decoders to the factory settings and changed CV 1 to loco1 and everything now is back to normal.

Thank you to everyone that helped with their suggestions, you help is very much appreciated.

Regards
Ian
 
You must log in or register to reply here.
Back
Top Bottom