NOTE: Detailed information on the PIKO SmartDecoder XP 5.1 Sound is available as a PDF file on our
Webshop on the page of the respective item number. The file contains a full description of all functions
and operating possibilities for the new SmartDecoder XP 5.1 Sound.
Description
The state-of-the-art PIKO SmartDecoder XP 5.1 Sound inside in this PIKO locomotive is a compact yet powerful multi-
protocol PluX16 sound decoder. It features high fidelity, 12 bit 8-channel sound with 2.5 watts of output that ensures
distortion-free sound at all levels. It complies with the current RCN standards in all areas. The decoder can be used on
DCC, mfx®, and Motorola® digital systems as well as traditional DC or AC analog layouts. It automatically senses what
operating mode is used on your layout and is RailCom®/RailCom Plus® compatible. The PIKO SmartDecoder XP 5.1
Sound features several programmable braking distance functions in addition to numerous other programmable functions.
The PIKO SmartDecoder XP5.1 Sound is load-regulated and features auto-adaptive motor control that works with of a
fundamentally newly developed traditional DC motors for a silky smooth ride as well as 1.2 Amp coreless motors. The
decoder will also tolerate a temporary current draw up to 2 Amps. The motor speed table can be set using the minimum,
median, and maximum motor speed (simple curve), or by the user-programable 28-speed step extended curve. The
decoder features two directional lighting outputs and two additional special function outputs that can be activated using
function keys up to F68 (DCC). The switching (shunting) gear, with extended slow speed range, the three possible
starting and braking delays, as well as the many vehicle sounds are also switchable via function keys. The sound part
can control specified function outputs as well as the motor output of the decoder. For example, the lighting of a diesel
locomotive flickers when the engine is started. The PIKO SmartDecoder XP 5.1 is supported by the further developed
power management in case of short-term voltage loss.
Installing the PIKO SmartDecoder XP 5.1 Sound
Remove the jumper plug from your model’s PluX22 interface. Insert the new sound decoder into the interface socket.
Note that PIN 11 is missing on the new decoder. Please install the loudspeaker as shown in the graphic of the "Spare
parts list".
Check for crossed wires and short circuits before and after reinstalling the shell. Place the model on your
programming track with programming mode activated on your DCC system. During programming or when reading the
model’s DCC address, a small amount of current will flow through the model, which does not affect the decoder; even
in the event of a short circuit.
Special function outputs A1 to A2
The decoder’s special function outputs A1 to A2 can only be activated if the desired functions are already connected to
the model’s PluX22 interface or if solder pads are available for the special function outputs on the main circuit board.
The license plate illumination can be made switchable by moving jumper J1 on the locomotive board with a PluX22
decoder at output A7.
First-time use of the decoder (state of delivery)
Enter address 3 on your digital control system. Depending on the data format used to address the sound decoder,
the locomotive runs in DCC mode with 28 speed steps or in Motorola® mode. When using a RailCom Plus®-enabled
system or with an mfx®-capable system, the decoder is detected automatically and can be operated immediately. If
the decoder is used on a conventional analog layout, it can be controlled with a DC or AC power pack. The decoder
will automatically detect the layout’s operating mode.
NOTE: In DC mode, your vehicle will not start until the voltage is higher (speed control turned up further) than you
may have been used to when operating with analog vehicles.
Function outputs in analog mode
It is possible to program the decoder so that function keys F0 - F12 (as they are assigned in the function
mapping) can also be activated in analog mode. To do this, CVs 13 & 14 must first be programmed with a
central control unit. The corresponding values can be found in the CV table of the detailed operating instructions.
The light function F0 and the traveling sound F1 are switched on at the factory.
#56542 PIKO SmartDecoder XP 5.1 Sound
PluX16 for Diesel locomotives BR T669 / 770 H0
multiprotocol, mfx® capability included
56542-90-7001_2022
Function assignments
PIKO Spielwaren GmbH
Lutherstr. 30
96515 Sonneberg
GERMANY
A short circuit in the motor, lighting, pick-up wiper, or wheelsets can destroy the
decoder as well as the electronics of the model!
CV
Description
Area
Value*
1
Locomotive address
DCC: 1 - 127
Motorola: 1 - 80
3
2
Minimum speed
(the speed from 0 until the locomotive is running at speed step 1)
0 - 255
0
3
Acceleration delay
0 - 255
180
4
Braking delay
0 - 255
240
5
Maximum speed
(must be greater than CV 2)
0 - 255
132
6
Average speed
(must be greater than CV 2 and less than CV 5)
0 - 255
42
8
Manufacturer's ID
Decoderreset CV8 = 8
different
162
12
Decoder operating mode
Bit 0=1 DC (analog operation; direct current) on
Bit 2=1 DCC data format on
Bit 4=1 AC (analog 3-rail operation; alternating current) on
Bit 5=1 Motorola® data format on
Bit 6=1 mfx® data format on
Value
*1
*4
*16
*32
*64
0 - 117
117
17
18
Long locomotive address
17 = high Byte
18 = low Byte
1 - 10239
192 - 231
0 - 255
1000
195
232
27
Brake signal settings (automatic stop)
Bit 0 = 1 -> ABC (Automatic Brake Control) right rail positive
Bit 1 = 1 -> ABC left rail positive
Bit 4 = 1 -> DC; opposite direction of travel
Bit 5 = 1 -> DC; same direction of travel
Value
1
2
16
32
0 - 51
0
29
DCC standard configuration
Bit 0=0 Normal direction of travel
Bit 0=1 Opposite direction of travel
Bit 1=0 14 speed steps
Bit 1=1 28 speed steps
Bit 2=0 Digital mode only
Bit 2=1 Automatic analog/digital recognition
Bit 3=0 RailCom® turned off
Bit 3=1 RailCom® turned on
Bit 4=0 Speed steps over CV 2, 5, and 6
Bit 4=1 Use the characteristic curve from CV 67 - 94
Bit 5=0 Short address (CV1)
Bit 5=1 Long address (CV 17/18)
Value
*0
1
0
*2
0
*4
0
*8
*0
16
*0
32
0 - 63
14
30
Error codes for the motor, thermal overload, and function outputs:
1 = motor error, 2 = thermal overload error, 4 = function output error
0 - 7
0
* set ex works
F0
Light
F10
Cab Door
F20
Tunnel mode
F1
Engine
F11
Cab Window
F21
Sanding
F2
High Tone Horn
F12
Cab Door
F22
Radiator Grill Open/Shut
F3
Train Lighting: Engine pulling
F13
Air Compressor
F23
Windshield Wipers
F4
Train Lighting: Engine pushing
F14
Coupling
F5
Low Tone Horn
F15
Curve Squeal
F6* Number Board Lights
F16
Manual Fan
F7
Switching Gear
F17
Engine Room Door
F8
Volume Regulator
F18
Clickety-Clack
F9
Hand Brakes
F19
Air Valve Release
* with PluX22 Decoder
