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 NEM652 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 sound decoder masters ABC braking, ABC shuttle
automatic, as well as ABC slow speed.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 outputsas well as via an additional special function output which can be 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. 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 NEM 652 interface. At the same place insert the 8-pin plug of the decoder
carefully into the interface socket. Please note the coding of PIN 1 note. If the plug is turned 180°, the locomotive will run
in the wrong direction and the light will not work. 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 A1
The special function output A1 of the PIKO SmartDecoder XP 5.1 can only be used if the desired consumer is already
connected to the NEM 652 interface in the vehicle, or if there are solder pads on the main board.
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 motor sound F1 are switched on ex works.
#56613 PIKO SmartDecoder XP 5.1 Sound
NEM652 for Electric locomotives BR 185.2
multiprotocol, mfx® capability included
56613-90-7001_2021
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
Mot: 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
50
4
Braking delay
0 - 255
30
5
Maximum speed
(must be greater than CV 2)
0 - 255
200
6
Average speed
(must be greater than CV 2 and less than CV 5)
0 - 255
100
7
Firmware version
(The processor can be updated)
-
differently
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
Licgt
F8
Automatic Spring Brake
F16
Engine Room Door
F1
Sound
F9
Compressor
F17 Fan
F2
High Tone Horn
F10 Cab Door
F18
Conducter's Whistle
F3
Station announcement 1
F11 Cab Window
F19
Sanding
F4
Station announcement 2
F12
Pantograph
F20 Air Valve Release
F5
Volume control
F13
Dead Man's Peda
F21
Curve Squeal
F6
Tunnel mode
F14 Train Brakes
F22 Clickety-Clack
F7
Switching Gear
F15
Coupling
F23
-
