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Programming Track
The command station checks for a short circuit on the programming track before
applying power. If your loco has lights or other current drawing devices wired directly
to the track instead of a decoder function output the command station will probably
think is has a short and will say “SHORT DETECTED” each time you start to program
this loco. If you wish you will be allowed to override the short and continue. This short
detection is there to protect decoders from damage if they are miswired. For this
reason we always try a new decoder installation on the programming track first instead
of putting it directly on the layout. If the programming works the installation is most
likely correct.
If you have tried to use “STD” programming the MRC decoder will not respond until
you program it using REGister mode.
Older MRC decoders can be easily programmed using “REG” programming (option 3
at the “PROG TRK” menu).
TROUBLE SHOOTING
Locomotive was running yesterday but today it just sits there - The headlight and
other functions are controllable but it won’t run. This sometimes happens when you clear
a consist but for some reason the decoder misses the command. Use the DEL LOCO
button to “re-delete” the locomotive. Alternatively use programming on the main to set
CV19 to 0 (same thing as clearing the consist).
Head Light goes on and off as I change speed - You are operating a loco with an
older 14 step decoder in the 28 step mode and the head light is ON only in the even
speed steps.
The programmability of the decoders gives the modeler a lot of flexibility. However, this
can lead to some unpredictable results. Here are a few tips to get you out of some
situations:
Loco won’t respond - Check that the short/long address bit is set correctly in the CFG
variable (CV 29).
The loco might be in a consist - Press DEL LOCO, the locomotive number then
ENTER.
Make sure CV3, 4, 23, 24 are set to a small enough value to allow the loco to
accelerate at a reasonable rate
Loco won’t run on an analog (DC) layout - Check that the DC mode bit is set in the
CFG variable (CV 29).
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