
©2011_MICROSENS GmbH & Co. KG_Küferstr. 16_59067 Hamm/Germany_www.microsens.com
Datasheet
Fiber-Converter
RS-232/422/485
General Information
The optical fiber converter RS-232/422/485 allows a quick and cost-effective media
conversion from fiber to RS-232/422/485.
Distances of up to 2 km can be covered over multimode fiber, regardless of the data rate.
A special version for single-mode fibers allows distances of up to 20 km.

Datasheet_Fiber-Converter-RS-232/422/485
Seite 2/6
©2011_MICROSENS GmbH & Co. KG_Küferstr. 16_59067 Hamm/Germany_www.microsens.com
Technical Data
Standards
RS-232 TIA/EIA-232
RS-422 TIA/EIA-422
RS-485 TIA/EIA-485
Data Link
Anzahl: 1x DB9, 1x ST
Type: RS-232: DB9 Connector
RS-485/422: DB9 Connector
ST (Optical Fiber)
Fiber type
Multimode Optical Gibre 50 or
62,5/125 µm duplex,
ST-Connector
Optional:
9/125 µm Monomode-Fiber
max. cable length
RS-232 max. 15m
RS-422/485 max. 1220m
Power supplies
9V DC / max. 0,7A with the wall
power supply (included)
Operating Temperature
0°C - 50°C
Humidity
5% - 90% noncondensing
Dimensions
26,2 x 70,3 x 94 mm (H x B x
T)
Standards
EMS
EN
55024/1998+A1:2001+A2:2003,
Class A
IEC 61000-4-2:2001
IEC 61000-4-3:2002+A1:2002
IEC 61000-44:1995+A1:2000+A2:2001
IEC 61000-4-5:2001
IEC 61000-4-6:2003
IEC 61000-4-8:2001
IEC 61000-4-11:2001
Standards
EMI EN 55022:
1998+A1:2000+A2:2003, Class
A
EN 61000-3-2: 2000
EN 61000-3-3: 1995+A1:2001

Datasheet_Fiber-Converter-RS-232/422/485 Seite 3/6
©2011_MICROSENS GmbH & Co. KG_Küferstr. 16_59067 Hamm/Germany_www.microsens.com
Optical Features
Multimode
Distance:
Transmission Power:
Receive Sensitivity:
Wave-Length:
Connector:
2 km (fullduplex)
-18 dBm
-30 dBm
1310 nm
ST
Single Mode
Distance:
Transmission Power:
Receive Sensitivity:
Wave-Length:
Connector:
20 km (fullduplex)
-15 dBm
-34 dBm
1310 nm
ST
Construction
DATA
PWR
FX
TX RX
RS-485/422/232 Media Converter
Picture 1: front view
Picture 2: side view

Datasheet_Fiber-Converter-RS-232/422/485 Seite 4/6
©2011_MICROSENS GmbH & Co. KG_Küferstr. 16_59067 Hamm/Germany_www.microsens.com
Configuration
Connector 1 (Choice of protocol)
MODE 1 2 Description
RS-232
OFF
OFF
RS-232-Mode (Standard)
RS-422-4D OFF ON RS-422 4-Wire-Mode (fullduplex)
RS-485-4D ON OFF RS-485 4-Wire-Mode (fullduplex)
RS-485-2D ON ON RS-485-2-Wire-Mode (halfduplex)
Picture 3: DIP- Switch Configuration
Connector 2 (RS-422/RS-485 Certificate)
1 2 Description
OFF
OFF
Certificate inactive (Standard)
OFF ON activated 120 Ω-load resistance for RS-485
ON OFF activated 100 Ω- load resistance for RS-422
ON ON Don’t use
Note: Don’t start the SW2.1 and the SW2.2 in the same time

Datasheet_Fiber-Converter-RS-232/422/485 Seite 5/6
©2011_MICROSENS GmbH & Co. KG_Küferstr. 16_59067 Hamm/Germany_www.microsens.com
Connecting Diagram
Connector
Picutre 4: connection block
DB9 Connector
Picture 5:DB9 Connector
Optical Fiber Connector
Picture 6: Optical Fiber Network Connector
6 GND Signal ground
5 R- RS-422/485-4D RX-
4 R+ RS-422/485-4D RX+ RS-232 RXD
3 T- RS-422/485-4D TX- 2D TX/RX- RS-232 TXD
2 T+ RS-422/485-4D TX+ 2D TX/RX+
1 GND Signal ground
4 idle
3 RS232 TXD or RS422/485-4D TX-,
2D TX/RX2 RS232 RXD or RS422/485-4D RX+
1 idle
idle 9
RS422/485-4D RX- 8
RS422/485-4D TX+ 7
or RS485-2D
TX/RX+-
idle 6
RS-232
RS-422
RS-485
(DB9 or
connectio
n block)
Optical Fiber
RX
TX
Fiber-Converter
RS-232/422/485

Datasheet_Fiber-Converter-RS-232/422/485 Seite 6/6
©2011_MICROSENS GmbH & Co. KG_Küferstr. 16_59067 Hamm/Germany_www.microsens.com
LED-Display
LED State Function
PWR
green
operational
DATA green Copper connector ready
FX
(LNK/ACT)
green Fiber connection ready
Description
Description Art.-No.
LWL-Konverter RS-232/422/485
Multimode 1310nm ST 2km, ext. Power supply
MS400131-V2
2 x ST
1 x Sub-D9
1 x Power
LWL-Konverter RS-232/422/485
Monomode 1310nm ST 20km, ext. Power supply
MS400132-V2
2 x ST
1 x Sub-D9
1 x Power
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& Co. KG. All information in this document is provided ‘as is’ and subject to change without notice. MICROSENS GmbH & Co. KG disclaims any
liability for the correctness, completeness or quality of the information provided, fitness for a particular purpose or consecutive damage.
MICROSENS is a trademark of MICROSENS GmbH & Co. KG. Any product names mentioned herein may be trademarks and/or registered trademarks
of their respective companies. 26/11p kö-sh