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Offline IsItDigitalAlready?  
#1 Posted : 24 April 2015 19:55:27(UTC)

United States   
Joined: 01/03/2015(UTC)
Posts: 30
Location: Nevada, Reno
Just so you know, I am a digital newbie (as if you couldn't tell from the question).

I bought this nice little switcher for my first layout in 25 years - the last one was straight Marklin AC - and it looks good and runs good. However, I have two difficulties that may be related to my inexperience:
  1. First, I can't read, let alone program, the decoder. When I address it either as a Motorola or a DCC decoder, the Z21 says it gets no response. Am I doing something rong, or are my expectations out of whack?
  2. Second, it seems to get stuck when I stop it, either when I throttle down to zero, or hit the stop button on my handheld device (iphone or android tablet). I have found that by slowly selecting different direction of travel (reverse-wait-forward-wait-reverse- etc.) a few times, it becomes responsive once again. Is there something about operating this little jewel that I need to learn?
All of this is new to me - digital, the Roco Z21, everything! On the plus side, my first conversion loco (ESU LokPilot v4.0 M4) works like a charm!

Cold Springs (Reno), in far Western Nevada
It's all Gordon's fault!
Offline H0  
#2 Posted : 24 April 2015 20:23:20(UTC)

Joined: 16/02/2004(UTC)
Posts: 13,799
Location: DE-NW
Hi, Bob,

I don't have this loco and I don't have any experience with the Z21. At least I have a similar loco.

Re 1: The loco supports the MM protocol only. With Motorola protocol it is impossible to read CVs from the loco.

Re 2: Did the loco have some run-in time? Maybe a problem with the brushes of the motor. Since it is a maintenance-free can motor there is probably nothing you can do without voiding the warranty.
Maybe you can try the loco with a different digital controller (club meeting, friends, friendly dealer, ...).
"In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS
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