L1
M1
R1
L2
M2
R2
L-Max
M-Max
R-Max
Adapter:
Adap-HSI-s88-N
braun
brown
gelb
yellow
Vom Modellbahntrafo
From transformer
IN
1
0
9
11
8
7
6
5
4
3
2
1
1
2
1
3
1
4
1
5
1
6
KL
6
KL5
KL4
KL3
KL2
KL
1
Littfinski DatenTechnik (LDT)
ST2
ST1
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 DatenTechnik (LDT)
www.ldt-infocenter.com
IN
1
0
9
11
8
7
6
5
4
3
2
1
1
2
1
3
1
4
1
5
1
6
KL
6
KL5
KL4
KL3
KL2
KL
1
Littfinski DatenTechnik (LDT)
ST2
ST1
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 DatenTechnik (LDT)
www.ldt-infocenter.com
IN
1
0
9
11
8
7
6
5
4
3
2
1
1
2
1
3
1
4
1
5
1
6
KL
6
KL5
KL4
KL3
KL2
KL
1
Littfinski DatenTechnik (LDT)
ST2
ST1
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 DatenTechnik (LDT)
www.ldt-infocenter.com
IN
1
0
9
11
8
7
6
5
4
3
2
1
1
2
1
3
1
4
1
5
1
6
KL6
KL5
KL
4
KL
3
KL
2
KL1
Littfinski DatenTechnik (LDT)
ST2
ST1
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 DatenTechnik (LDT)
www.ldt-infocenter.com
IN
1
0
9
11
8
7
6
5
4
3
2
1
1
2
1
3
1
4
1
5
1
6
KL6
KL5
KL4
KL
3
KL
2
KL
1
Littfinski DatenTechnik (LDT)
ST2
ST1
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 DatenTechnik (LDT)
www.ldt-infocenter.com
IN
1
0
9
11
8
7
6
5
4
3
2
1
1
2
1
3
1
4
1
5
1
6
KL6
KL5
KL4
KL
3
KL
2
KL
1
Littfinski DatenTechnik (LDT)
ST2
ST1
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 DatenTechnik (LDT)
www.ldt-infocenter.com
IN
1
0
9
11
8
7
6
5
4
3
2
1
1
2
1
3
1
4
1
5
1
6
KL6
KL5
KL
4
KL
3
KL
2
KL1
Littfinski DatenTechnik (LDT)
ST2
ST1
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 DatenTechnik (LDT)
www.ldt-infocenter.com
IN
1
0
9
11
8
7
6
5
4
3
2
1
1
2
1
3
1
4
1
5
1
6
KL6
KL5
KL4
KL
3
KL
2
KL
1
Littfinski DatenTechnik (LDT)
ST2
ST1
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 DatenTechnik (LDT)
www.ldt-infocenter.com
IN
1
0
9
11
8
7
6
5
4
3
2
1
1
2
1
3
1
4
1
5
1
6
KL6
KL5
KL
4
KL
3
KL
2
KL1
Littfinski DatenTechnik (LDT)
ST2
ST1
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 DatenTechnik (LDT)
www.ldt-infocenter.com
KL1
s8
8 R
üc
km
eld
eb
us
High Speed Interface 88
HSI-88
Rev. 2.1
Littfinski DatenTechnik
b r.
g el
b
14
..1
8V
~
Computer
RS232
Schnelles Computer-Interface für den s88-Rück-
meldebus. Ermöglicht 3 Rückmeldestränge.
High Speed Interface-88
HSI-88
Digital-Profi werden!
Littfinski DatenTechnik (LDT)
www.ldt-infocenter.com
LE
FT
MID
DL
E
R IG
HT
S
o
ld
e
rS
id
e
Ad
ap
-H
S I-
s8
8-N
R
ev
. 1
.1
Litt
fin
sk
i D
ate
n Te
ch
nik
(L
DT
)
Computer
RS232
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 above
example
shows a possible
distribution
of
feedback
modules
to the
three inputs.
The administration and addressing of the feedback modules will
be supported by your model railway software.
How to register additional feedback modules please consult the
manual of your model railway software.
Standard feedback modules of the s88 feedback system
usually include
16 inputs
.
With the
HSI-88
up to
31
of those
feedback modules
(
62
of
LDT
RM-GB-8-N
track occupancy detection modules with 8 inputs)
can be controlled. Max.
31
modules can be connected on each
bus line. The
summary of all three lines
shall not extend a total
of
31 modules
.
All
s88-feedback bus compatible
feedback modules can be
connected to the interface
HSI-88.
Beside the
LDT
modules
RM-88-N
and
RM-88-N-O
for moment-
contacts and the
RM-GB-8-N
for track occupancy detection even
different types of feedback modules from different manufacturers
can be used.
Different brands
and
types can be
connected to the feed back
lines
even if
they are mixed.
Further
examples
for using the
HSI-88
and
other LDT products
for performing feedback tasks with various kind of contacts can
be downloaded from our
Internet Page (
www.ldt-infocenter.com
)
from the
download section.
For the
HSI-88-B
kit a solid
low-priced casing
is available under
the part number
LDT-01
. Further details are available on our
Internet Page.
Communication with the PC:
After switching
on the power supply a
red LED
at the
HSI-88
will
indicate
ready-to-operate
.
The
HSI-88
works
event driven
that means that each feedback
information will be transferred directly to the
PC
. This
saves
considerable
PC resources
and
shortens the reaction time
as
the
PC
does not have to poll feedback information in cycles
(which means delays) but the
HSI-88
itself will report each
change to the
PC
directly and without delay.
During
interaction
between
PC
and
HSI-88
via the
serial
port
the
red LED
will be
OFF
. As the interaction will be very fast the
LED will show therefore a kind of
flickering.
If you want to
include
the communication with the
HSI-88
into
your own written
model railway software
you can download a
list of complete
commands
from our
LDT
-Internet Page
(www.ldt-infocenter.com).
Trouble shooting:
What to do if something is not working as described above?
If you have purchased the interface as a kit please check
carefully all parts and all soldered joints.
Here you will find some descriptions of failures and the causes
respectively how to solve the problem:
1. The
rail way software does not recognize the HSI-88.
Feedback information will not be transferred from Interface to the
PC.
•
Is the
LED
of the
HSI-88 on
after switching the unit on? If
not,
check
the
power supply
on clamp KL1.
•
Is the LED flickering after starting the rail way
software
?
Background: after starting the software the PC tries to
contact the registered HSI-88 Interface and the LED should
flicker. Does the LED not flicker it is possible that the COM
port is defective.
Check this by
changing the serial ports
of the digital
control unit with the port of the Interface HSI-88.
2. After
starting the rail way software
the
LED
of the
HSI-88
Interface
flickers. Nevertheless there will be no connection.
Deactivate
the
FIFO-Buffer
of the connection adjustment for the
COM interface
where the HSI-88 is connected to the PC. With
respect to the PC operating system (Win2000, XP, Vista, Win7,
Win8 e.g.) via Working Place, System Control, System and
Device Manager or similar.
Further
products
from
our
Digital-
Professional-Series
:
Adap-HSI-s88-N
Via the
3-fold Adapter
is it possible to connect s88-feedback
modules directly via the screened Patch-Kabel to the Interfaces
in accordance to
s88-N
.
RM-88-N / RM-88-N-O
16-fold feedback module
with 16 inputs (
RM-88-N
as Märklin
s88 switching against ground,
RM-88-N-O
with 16 galvanic
separated opto-coupler inputs) for s88-standard connections
and
s88-N
.
RM-GB-8-N
8-fold feedback module
with integrated occupancy detectors
for a current load up to 3 Ampere (peak current 7 Ampere) for
s88-standard connections and
s88-N
.
All products can be supplied as easy to assemble
complete kits
as
finished modules
or as
finished module in a case.
Made in Europe by
L
ittfinski
D
aten
T
echnik (
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.
07/2019 by LDT
Märklin is a registered trademark.
