Operating Instruction
L
ittfinski
D
aten
T
echnik (
LDT
)
Multi-Digital
s88-N
Data switch
from the Digital-Professional-Series !
DSW-88-N-G
Part-No.:
040113
>> finished module in a case <<
suitable for the s88 feedback bus
The data switch DSW-88-N enables to ramify the
s88-feedback line.
⇒
for s88-standard connections and s88-N
(
with 6-poles s88-pinbars as well as RJ-45 sockets and
suitable for 5 and 12V bus voltage).
⇒
suitable for the digital control:
Control Unit, Central Station 1, Intellibox, TWIN-CENTER,
HSI-88(-USB), EasyControl, ECoS, DiCoStation.
This product is not a toy! Not suitable for children under 14 years of age! The kit
contains small parts, which should be kept away from children under 3 years of age!
Improper use will imply danger or injuring due to sharp edges and tips! Please store
this instruction carefully.
Introduction / Safety Information:
You have purchased the data switch DSW-88-N for your model
railway. The DSW-88-N is a high quality product that is supplied
within the assortment of Littfinski DatenTechnik (LDT).
We are wishing you having a good time using this product.
The data switch DSW-88-N from the
Digital-Professional-Series
can
operate on your digital control without any problems.
The DSW-88-N is suitable for the application on any digital
control unit which supports the s88 feedback bus
The finished modules in a case come with 24 month warranty.
• Please read the following instructions carefully. Warranty will
expire due to damages caused by disregarding the operating
instructions. LDT will also not be liable for any consequential
damage caused by improper use or installation.
• Also, note that electronic semiconductors are very sensitive to
electrostatic discharges and can be destroyed by them.
Therefore, discharge yourself before touching the modules on
a grounded metal surface (e.g. heater, water pipe or protective
earth connection) or work on a grounded electrostatic
protection mat or with a wrist strap for electrostatic protection.
• We designed our devices for indoor use only.
General description:
The s88-feedback bus is built up as a continuous line with all
feedback modules behind each other. They are building one line.
This feature has its disadvantages on some model railway
layouts. If the digital command station is positioned at the center
of a model railway layout the feedback line can only be directed
to the right or left hand side and has then to be re-directed from
the left or right end via the layout middle into the opposite layout
part.
The data switch DSW-88-N gives you the opportunity to ramify
the s88 feedback bus at any position on the track.
Connecting the DSW-88-N to the digital
model railway:
• Attention: Before starting the installation switch-off the
drive voltage by pushing the stop button or disconnect the
main supply from all transformers.
Littfinski DatenTechnik (LDT)
Right
ST3
Left
ST2
BU3 BU2
ST1
OUT
BU1
DSW-88-N
Rev. 1.0
Datenweiche für den s88 Rückmeldebus
Dataswitch for the s88 feedback bus
IN Le
s88-N
IN Ri
s88-N
s88-N
OUT
Digital-Profi werden!
www.ldt-infocenter.com
Littfinski DatenTechnik (LDT)
Datenweiche für den s88-Rückmeldebus.
Datenweiche
DSW-88-N
s88-N
The data switch DSW-88-N contains three 6-poles pin-bars for
the s88-standard connection and as well three RJ-45 sockets
for a bus connection according to
s88-N
.
At the DSW-88-N are
pin-bars and sockets marked with OUT and IN.
OUT indicates the connection in direction to the command
station or interface. IN indicates the connection to the next
following feedback module within the s88-bus line.
Command stations and interfaces are always equipped with an
s88-input for a s88-standard connection.
For the s88-standard connection is an interference protected
twisted s88-bus cable with original s88-bus plugs available.
The plugs of the s88-bus cable are correct attached onto the
6-poles pin-bar of the data switch DSW-88-N if the white
single wire corresponds with the white marking on the pc-
board next to the pin-bar. The direction of the cable has to be
show directly away from the data switch.
If you use feedback modules with a ribbon-cable the plug has to
be inserted that way that the cable will point away from the
data switch.
Additionally attend to the position of the plugs on the 6-poles
pin-bars. No offset will be acceptable.
For the
s88-N
s88-bus connection we offer a screened blue
patch-cable with RJ-45 plugs.
Attention: Command stations with PC-network connection
(e.g. Central Station 1 and ECoS) contain as well a RJ-45
socket. It is not acceptable to connect the DSW-88-N to the
RJ-45 network sockets.
IN Ri
s88-N
IN Le
s88-N
s88-N
OUT
Sample connections:
OUT
OUT
IN
OUT
1
3a
3b
2
8-fach Rückmeldemodul
mit Gleisbesetztmeldern
8-fold feedback module
with occupancy detectors
RM-GB-8-N
Rev. 1.1
12345678
IN1IN2
IN
ST2ST1
s88-N
OUT IN
s88-N
OUT
BU1 BU2
8-fach Rückmeldemodul mit integrierten Gleisbelegtmeldern
für den s88-Rückmeldebus.
8-fold feedback module with occupancy detectors for s88-
feedback bus.
RM-GB-8-N
Rückmeldemodul / Feedback module
Littfinski DatenTechnik (LDT)
Digital-Profi werden!
s88-N
www.ldt-infocenter.com
8-fach Rückmeldemodul
mit Gleisbesetztmeldern
8-fold feedback module
with occupancy detectors
RM-GB-8-N
Rev. 1.1
12345678
IN1IN2
IN
ST2ST1
s88-N
OUT IN
s88-N
OUT
BU1 BU2
8-fach Rückmeldemodul mit integrierten Gleisbelegtmeldern
für den s88-Rückmeldebus.
8-fold feedback module with occupancy detectors for s88-
feedback bus.
RM-GB-8-N
Rückmeldemodul / Feedback module
Littfinski DatenTechnik (LDT)
Digital-Profi werden!
s88-N
www.ldt-infocenter.com
Littfinski DatenTechnik (LDT)
Right
ST3
Left
ST2
BU3 BU2
ST1
OUT
BU1
DSW-88-N
Rev. 1.0
Datenwe iche für den s88 Rückmeldebus
Dataswitch for the s88 f eedback bus
IN Le
s88-N
IN Ri
s88-N
s88-N
OUT
Digital-Profi werden!
www.ldt-infocenter.com
Littfinski DatenTechnik (LDT)
Datenweiche für den s88-Rückmeldebus.
Datenweiche
DSW-88-N
s88-N
IN
10
9
11
8
7
6
5
4
3
2
1
12
13
14
15
16
KL6KL5KL4KL3KL2KL1
Littfinski DatenTechnik (LDT)
ST2ST1
Rückmeldemodul RM-88-N
16 - channel feedback module
Rev. 1.0
BU1 BU2
s88-N
OUT IN
s88-N
OUT
16 Rückmeldeeingänge für den
s88-Rückmeldebus.
Rückmeldemodul
RM-88-N
s88-N
Digital-Profi werden!
Littfinski DatenTechni k (LDT)
www.ldt-infocenter.com
8 7 6 5 4 3 2 1
9 10 11 12 13 14 15 16
märklin
digital
decoder s 88
Intellibox
weiss
white
weiss
white
s88- Rückmeldebus
s88- feedback bus
Bestellbezeichnung / Order code:
Kabel s88 0.5m, Kabel s88 1m
oder / or Kabel s88 2m
Bestellbezeichnung / Order code:
Kabel Patch 0.5m, Kabel Patch 1m,
Kabel Patch 2m oder / or
Kabel Patch 3m
Bestellbezeichnung / Order code:
Kabel s88 0.5m, Kabel s88 1m
oder / or Kabel s88 2m
The above sample connection solves the before mentioned
problem of a command station placed at the middle of a layout.
In this example the data switch is connected directly to the
Intellibox to built two feedback lines.
The left line at the left layout side consist of one Märklin s88
feedback module and one s88 compatible RM-88-N from LDT.
At the right line there are two LDT feedback modules with
integrated occupancy detector (RM-GB-8-N) connected.
Next to the RJ-45 socket BU2 and the pin bar ST2 for the left
s88-bus line is a rotary code switch located. Access to the
rotary code switch is possible by removing the cover of the
data-switch DSW-88-N. The number of feedback modules
connected to the left line must be set with a small screwdriver.
At the above sample there are 2 modules connected to the left
line and the code switch has to be set to 2. After the command
station has red-out the feedback information the data switch
DSW-88-N will know that after the read-out of the second
feedback module it has to switch-over to the right line.
The rotary code switch allows up to 15 modules for the left
line. Number 1 to 9 are shown on the switch with printed letters.
Followed with A to F. The letter A means number 10 and F the
number 15. The exact allocation is printed on the board next to
the code switch.
The command station or the PC software will assign an individual
address to each of the feedback modules with 16 inputs
beginning from the command station.
The module with the number 1 is always connected directly to
the command station or the Interface, followed by module 2, 3
and so on.
In case you use our feedback modules with integrated occupancy
function RM-GB-8-N with 8 inputs, two feedback modules will be
detected by the command station respectively by the model
railway software as one feedback module because the digital
command station and as well the PC-Software will occupy 16
inputs for each feedback module.
Example 1 shows the module numbering in detail.
3
5
4
6
7
2
1
IN
10
9
11
8
7
6
5
4
3
2
1
12
13
14
15
16
KL6KL5KL4KL3KL2KL1
Littfinski DatenTechnik (LDT)
ST2ST1
Rückmeldemodul RM-88-N-Opto
16 - channel feedback module
Rev. 1.0
Ref
BU1 BU2
s88-N
OUT IN
s88-N
OUT
16 galvanis ch getrennte Rückm eld ee ingänge
für den s8 8- Rüc kmeldebus.
Rückmeldemodul
RM-88-N-Opto
Digital-Profi werden!
www.ldt-infocenter.com
Littfinski DatenTechnik (LDT)
s88-N
Littfinski DatenTechnik (LDT)
Right
ST3
Left
ST2
BU3 BU2
ST1
OUT
BU1
DSW-88-N
Rev. 1.0
Datenweiche für den s88 Rückmeldebus
Dataswitch for the s88 feedback bus
IN Le
s88-N
IN Ri
s88-N
s88-N
OUT
Digital-Profi werden!
www.ldt-infocente r.com
Littfinski DatenTechnik (LDT)
Daten weiche fü r d en s88-Rückmeldeb us.
Datenweiche
DSW-88-N
s88-N
IN
10
9
11
8
7
6
5
4
3
2
1
12
13
14
15
16
KL6KL5KL4KL3KL2KL1
Littfinski DatenTechnik (LDT)
ST2ST1
Rückmel demodul RM-88-N-Opto
16 - channel feedback module
Rev. 1.0
Ref
BU1 BU2
s88-N
OUT IN
s88-N
OUT
16 ga lvan is ch getrennte Rüc kmeldeeing änge
für d en s88-Rückm eldeb us.
Rückmeldemodul
RM-88-N-Opto
Digital-Profi werden!
www.ldt-infocente r.com
Littfinski DatenTechnik (LDT)
s88-N
IN
10
9
11
8
7
6
5
4
3
2
1
12
13
14
15
16
KL6KL5KL4KL3KL2KL1
Littfinski DatenTechnik (LDT)
ST2ST1
Rückmeldemodul RM-88-N-Opto
16 - channel feedback module
Rev. 1.0
Ref
BU1 BU2
s88-N
OUT IN
s88-N
OUT
16 galva nisch get rennte Rückm eld ee ingänge
für den s8 8- Rüc kmeldebus.
Rückmeldemodul
RM-88-N-Opto
Digital-Profi werden!
www.ldt-infocenter.com
Littfinski DatenTechnik (LDT)
s88-N
IN
10
9
11
8
7
6
5
4
3
2
1
12
13
14
15
16
KL6KL5KL4KL3KL2KL1
Littfinski DatenTechnik (LDT)
ST2ST1
Rückmeldemodul RM-88-N-Opto
16 - channel feedback module
Rev. 1.0
Ref
BU1 BU2
s88-N
OUT IN
s88-N
OUT
16 galvanis ch getrennte Rückm eld ee ingänge
für den s8 8- Rüc kmeldebus.
Rückmeldemodul
RM-88-N-Opto
Digital-Profi werden!
www.ldt-infocenter.com
Littfinski DatenTechnik (LDT)
s88-N
IN
10
9
11
8
7
6
5
4
3
2
1
12
13
14
15
16
KL6KL5KL4KL3KL2KL1
Littfinski DatenTechnik (LDT)
ST2ST1
Rückmeldemodul RM-88-N-Opto
16 - channel feedback module
Rev. 1.0
Ref
BU1 BU2
s88-N
OUT IN
s88-N
OUT
16 galva nisch get rennte Rückm eld ee ingänge
für den s8 8-Rückmeldebus.
Rückmeldemodul
RM-88-N-Opto
Digital-Profi werden!
www.ldt-infocenter.com
Littfinski DatenTechnik (LDT)
s88-N
IN
10
9
11
8
7
6
5
4
3
2
1
12
13
14
15
16
KL6KL5KL4KL3KL2KL1
Littfinski DatenTechnik (LDT)
ST2ST1
Rückmeldemodul RM-88-N-Opto
16 - channel feedback module
Rev. 1.0
Ref
BU1 BU2
s88-N
OUT IN
s88-N
OUT
16 galva nisch get rennte Rückm eld ee ingänge
für den s8 8- Rüc kmeldebus.
Rückmeldemodul
RM-88-N-Opto
Digital-Profi werden!
www.ldt-infocenter.com
Littfinski DatenTechnik (LDT)
s88-N
IN
10
9
11
8
7
6
5
4
3
2
1
12
13
14
15
16
KL6KL5KL4KL3KL2KL1
Littfinski DatenTechnik (LDT)
ST2ST1
Rückmeldemodul RM-88-N-Opto
16 - channel feedback module
Rev. 1.0
Ref
BU1 BU2
s88-N
OUT IN
s88-N
OUT
16 galvanis ch getrennte Rückm eld ee ingänge
für den s88 -Rückme ldebus.
Rückmeldemodul
RM-88-N-Opto
Digital-Profi werden!
www.ldt-infocenter.com
Littfinski DatenTechnik (LDT)
s88-N
Bestellbezeichnung / Order code:
Kabel Patch 0.5m, Kabel Patch 1m,
Kabel Patch 2m oder / or
Kabel Patch 3m
Bestellbezeichnung / Order code:
Kabel Patch 0.5m, Kabel Patch 1m,
Kabel Patch 2m oder / or
Kabel Patch 3m
The numbering of the modules will be done behind the data
switch from left to right. The Märklin module s88 on the left line
has been assigned as module number 1, followed by the
RM-88-N as number 2. The two RM-GB-8-N modules connected
to the right line will both have the module number 3 in this system,
as both together have 16 Inputs.
The second sample connection shows a feedback system with 7
feedback modules. The data switch DSW-88-N is used behind
the second module to split the s88-feedback bus.
The left line connected to the DSW-88-N has the assigned
modules number 3 and 4 and on the right line modules number
5, 6 and 7 are connected. As there are 2 modules connected to
the left line the rotary code switch has been set to 2.
Further sample connections can be found on our internet site
(www.ldt-infocenter.com) in the area "Sample Connections".
Made in Europe by
Littfinski DatenTechnik (LDT)
Bühler electronic GmbH
Ulmenstraße 43
15370 Fredersdorf / Germany
Phone: +49 (0) 33439 / 867-0
Internet: www.ldt-infocenter.com
Subject to technical changes and errors. 09/2022 by LDT
Arnold, Digitrax, Lenz, Märklin, Motorola, Roco and Zimo are registered trademarks.
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