
RS232/422/485
to Fiber Converter
User’s Manual
(For MS400131-V2 and MS400132-V2)
2011, MICROSENS GmbH & Co.KG All rights reserved. Rev. 1.5.1-pk5011

Table of Contents
C
AUTION
........................................................................................................ 2
E
LECTRONIC EMISSION NOTICES
............................................................................ 2
1.INTRODUCTION .......................................................................................... 3
1-1. O
VERVIEW OF FIBER CONVERTER
..................................................................... 3
1-2. C
HECKLIST
............................................................................................... 3
2. INSTALLATION .......................................................................................... 4
2-1. I
NSTALLING THE FIBER CONVERTER
.................................................................. 4
M
OUNTING ON
DIN-R
AIL
.................................................................................... 4
2-2. DIP-S
WITCH SETTINGS
............................................................................... 5
2-3. C
ONNECTOR
............................................................................................. 6
2-4. LED D
ESCRIPTION
..................................................................................... 7
2-5. DC J
ACK AND
AC-DC P
OWER ADAPTER
............................................................ 7
3. TECHNICAL SPECIFICATIONS .................................................................... 7

Caution
Circuit devices are sensitive to static electricity, which can damage their delicate
electronics. Dry weather conditions or walking across a carpeted floor may cause you to
acquire a static electrical charge.
To protect your device, always:
• Touch the metal chassis of your computer to ground the static electrical charge
before you pick up the circuit device.
• Pick up the device by holding it on the left and right edges only.
Electronic Emission Notices
European Community (CE) Electromagnetic Compatibility Directive
This equipment has been tested and found to comply with the protection requirements
of European Emission Standard EN55022/EN60555-2 and the Generic European
Immunity Standard EN50082-1.
EMC:
EN55022(1988)/CISPR-22(1985) class A
EN60555-2(1995) class A
EN60555-3
IEC1000-4-2(1995) 4K V CD, 8KV, AD
IEC1000-4-3(1995) 3V/m
IEC1000-4-4(1995)
1KV – (power line), 0.5KV –
(signal line)

1. Introduction
1-1. Overview of fiber converter
The fiber optic converter of RS232/422/485 to Fiber Optic is used to
extend the distance up to 2Km over the multi-mode fiber or up to 20Km
over single-mode fiber. The converter is equipped with multiple interface
circuit such as RS232, RS422, RS485 2/4-wire.
Note: This product has to be used in pairs
1-2. Checklist
Before you start installing the Converter, verify that the package contains
the following:
The RS232/422/485 to Fiber Converter
AC-DC Power Adapter (Optional for commercial or industrial model)
This User's Manual
Please notify your sales representative immediately if any of the
aforementioned items are missing or damaged
FX
RS -2 32/ 42 2 /4 85
TX RX
Da ta Pw r
Fig. 1: Front View of RS232/422/485 to Fiber Converter
Fig. 2: RS232/422/485to Fiber Converter Side Panel

2. Installation
2-1. Installing the Fiber converter
Mounting on DIN-Rail
⇒ Remove the four screws on the both sides of the converter.
⇒ Place the converter on the mounting bracket.
⇒ Align the screw holes on the bracket with the holes on the both sides of
the converter. (See Fig. 3)
⇒ Insert the 2 x 5mm screws and tighten them until they are secure.
Fig. 3
⇒ Position the fixed DIN-rail clip on the backside of the bracket on to the
DIN-rail.
⇒ Pull up the moveable DIN-rail clip to attach the bracket to the DIN-rail,
and then release the clip.
(See Fig. 4)
⇒ Make sure the converter is securely mounted on the DIN-rail.
Fig. 4

2-2. DIP-Switch Settings
Fig. 5
•
SW1-1,2
SW1 (Copper Mode Select)
Mode 1 2 Description
RS232 ∗
OFF OFF RS232 mode
RS422-4W OFF ON
RS422 4-wire mode
(full duplex)
RS485-4W ON OFF
RS485 4-wire mode
(full duplex)
RS485-2W ON ON
RS485 2-wire mode
(half duplex)
∗: Default
•
SW2 (RS-422/RS-485 TERMINATION)
SW2 (Termination select)
1 2 Description
OFF OFF Termination disable *
OFF ON
Insert 120 Ω terminator on
RS-485 TX/RX wires
Insert 100 Ω terminator on
RS-422 TX/RX wires
∗: Default
NOTE: SW2-1 and SW2-2 do not set to ON at the same time.

2-3. Connector
SUB-DB9
Connector
Fig. 6: Female SUB-DB9 connector definition on cable
Fig. 7: Male SUB-DB9 connector definition on device
Fig. 8: Fiber Optic Network Connection
4 Unused
3 RS232 TXD or RS422/485-4W TX-
TX/RX-
2 RS232 RXD or RS422/485-4W RX+
1 Unused
RS422/485-4W RX- 8
RS422/485-4W TX+ 7
or RS485-2W TX/RX+-
Unused 6
RS232
RS422
RS485
(SUB-DB9
2 RS232 RXD or RS422/485-4W RX+
3 RS232 TXD or RS422/485-4W TX-, 2W
TX/RX-
4 Unused
5 Signal Ground

2-4. LED Description
LED Color
Function
FX (LNK/ACT) Green
Lit when fiber connection is
good
Blinks when fiber data is
present
DATA
(Copper)
Green
Lit when Copper data is
present
PWR Green
Lit when +5 V power is
coming up
Note: According to LED Description, check which part is out of work.
Reset this product by power off/on.
2-5. DC Jack and AC-DC Power Adapter
The DC jack's central post is 2.5mm wide and it conforms to the DC
receptacle(2.5mm).
* AC-DC adapter (VOUT +5 VDC) is required.
3. Technical Specifications
• Standards: RS-232 TIA/EIA-232
RS-422 TIA/EIA-422
RS-485 TIA/EIA-485
• Network Interface: RS232 (SUB-DB9)
RS485/422 (SUB-DB9)
SC/ST Fiber Transceiver
∗
Any other fiber model, such as LC, BiDi, etc. is available upon request.
DC Jack :2.5mm
DC Input :+5V
(DC current: full load consumption 0.5 A)
Fig.9: DC+5 V Input Jack and dimension

• Maximum Cable Distance :
Configuration
Max. Distance
RS232 15m(50ft)
RS422/485 1220m (4000ft)
Multi-mode Fiber 2km
Single-mode Fiber
20km ∗
*
Any other distance is upon request.
• Fiber Cable: 50/125, 62.5/125, or 100/140
µ
m multi-mode
8.3/125, 8.7/125, 9/125 or 10/125 µm single-mode
Bidi-SC 1310 nm, 1550 nm
• Data Transfer Rate : up to 460.8Kbps
• LED : PWR , FX, DATA
• Power Requirement: 1 A@+5 VDC
• Ambient Temperature: -10 to 60°C(Industrial)
0 to 50°C (Commercial)
• Humidity : 5% to 90%
• Dimensions: 26.2(H) × 70.3(W) × 94(D) mm
• Complies with CE Mark