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Motorola

®

The decoder utilizes 4 Motorola® addresses to access functions F1 - F 16, when using a Motorola—based 

command station. The three sequence addresses for the functions F5 - F16 are ascending to the decoder address 

and can be activated in CV61 as required by the values 1 (F5 - F8), 2 (F5 - F12), or 3 (F5 - F16).

Configuration of CVs

CVs 12 and 29 control the operating mode and configuration CVs, respectively. As a rule, an indexed CV contains 

various basic settings of a decoder, such as reversing the direction of travel. CV calculation examples can be found 

in the detailed operating instructions.

RailCom

®

, RailCom Plus

®

In the sound decoder, CV29 (RailCom®) can be turned on or off via bit 3. The decoder is automatically recognized 

by RailCom Plus® - equipped command stations (like PIKO SmartControl) if the RailCom Plus® option is activated 

in CV 28.  The decoder name, locomotive symbol, and special function symbols will appear automatically on your 

control device’s screen. With RailCom Plus® technology, no locomotive data has to be stored in the DCC central 

control unit and no locomotive addresses have to be programmed into the decoder. 

mfx

®

The PIKO SmartDecoder XP 5.1 Sound also masters the mfx® data format. The decoder is automatically 

recognized on mfx®-equipped command stations. The decoder name and its maximum of 16 special function 

symbols automatically (license required). 

This mfx® technology means that no locomotive data has to be stored in the command station and no locomotive 

addresses have to be programmed into the sound decoder.

Braking

The sound decoder understands the following braking methods: 

Märklin® braking section (brakes with analog DC voltage)

DCC braking function

ABC (Automatic Brake Control) braking section

The decoder’s adjustable braking distance can bring the train to a stop within a centimeter of a signal. More 

information on "braking behavior" can be found in the detailed operating instructions for 

PIKO SmartDecoder XP 5.1 Sound.

Shunting speed (RG)

The desired function key F0 - F68, via which the shunting speed (half speed) can be switched on, is entered in 

CV157.

Starting and braking delays (ABV)

The desired function key F0 - F68, which can be used to switch off the ABV, is entered in CV156. The values of the 

starting and braking delays can be changed in CVs 3 and 4.

Function outputs

A comprehensive description of all options related to the function outputs can be found in the detailed operating instructions.

Simple and extended function mapping

In the simple function mapping according to RCN-225 

(CVs 33 - 46) 

the switching tasks such as lighting

and special function output can be freely assigned to the function keys F0 to F12 of the digital command station.

The switchable starting and braking delay and the shunting gear can be assigned to any function key up to F68 in 

CVs 156 and 157 can be assigned to any function keys up to F68. More information can be found in the detailed

operating instructions.

Smoke generator control

A smoke generator can be connected to output A1, which can be controlled by the decoder either load- or speed-

dependent.

speed-dependent by the decoder. The assignment to the function keys is done exclusively via the extended function 

mapping extended function mapping.

Extended function mapping

Due to its complex nature, extended 

function mapping

 cannot easily be set by programming individual CVs. To 

work with extended 

function mapping

, you will need the PIKO SmartProgrammer device (#56415) and, if desired, 

the PIKO SmartTester (#56416). Detailed information on extended function mapping is available in the instruction 

manual.

Servo control

The decoder enables the control of a servo motor via function output A1. The assignment to the function keys is done 

exclusively via the extended function mapping.

The use of a servo with the decoder requires electronics expertise. 

Further information can be found in the detailed operating instructions.

ATTENTION:

 Soldering on the decoder should only be carried out by experienced specialists with the appropriate tools. 

Decoders damaged by improper handling will not be covered by the warranty.

Sound settings

To change the overall sound volume of the SmartDecoder XP 5.1 Sound, first program CV31 to a value of 2 and CV32 to 

a value of 0.

This will take you to the programming area for setting the total volume. You can now set this as you wish in CV257 in the 

value range 0 - 255.

NOTE: In order to play a PIKO sound on the sound decoder, the test and programming device requires PIKO

SmartProgrammer (#56415) and (optional) the PIKO SmartTester (#56416).

All further information about the sound section of the PIKO SmartDecoder XP 5.1 Sound as well as the available

For setting options, please refer to the detailed operating instructions.

Factory reset

To restore the sound decoder to its factory settings, program CV8 to a value of 8. 

Programming

Configuration variables (CVs) form the basis of all the decoder’s settings. This decoder can be used with the 

 

PIKO SmartControl

light

 DCC system, the PIKO SmartControl DCC system, or any other Motorola-based system.

 

For more information on programming options, please refer to the instruction manual.

Märklin® and mfx® are registered trademarks of Gebr. Märklin & Cie. GmbH, Göppingen

Motorola

® is a registered trademark of Motorola Inc. Tempe, (Phoenix) Arizona / USA

RailCom® and RailComPlus® are registered trademarks of Lenz Elektronik GmbH, 35398 Gießen

NOTE: 

This product is not a toy and is not suitable for children under the age of 14. Any liability for damage of any 

kind caused by improper use or failure to observe these instructions is excluded.

Service:

Internet: www.piko.de

E-Mail:info@piko.de

In the event of a defective decoder, please return the decoder module to PIKO along with proof of purchase, the decoder 

address, and a short description of the problem.

Warranty Statement

Each decoder module is fully tested before shipment. Nevertheless, should a malfunction occur within the 2-year warranty 

period, we will repair the module free of charge on presentation of the proof of purchase. This warranty is voided if the unit 

has been damaged by improper use. Please note that, according to the German Electromagnetic Compatibility Law (EMV-

Gesetz), the decoder module may only be used inside models bearing the CE mark.

Product subject to changes. All rights reserved. Printed 10/2021.

Copy and duplication of this text are permissible only with the permission of the publisher.

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