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Manual-FTDR-Rev1311.pdf 

                                    Page 7 of 12 

www.kbcnetworks.com 

Copyright © KBC Networks Ltd.

 

DATA:    RS232/RS422/2 wires RS485/4 wires RS485 compatible 
Terminal pins assignment: 

 
DIP1 Switch setup table: 

DIP Switch pin name 

RS-232 

RS-422 

4wire 

RS-485 

2wire 

RS-485 

D1(  RS422/4  wires  RS485  input  terminator 
120Ω)   

OFF 

ON/OFF 

  ON/OFF 

 

OFF 

D2(  2  wires  RS485,  RS422/4  wires  RS485 

output   

terminator 120Ω) 

OFF 

ON/OFF 

  ON/OFF 

  ON/OFF 

 

D3(  2  wires  RS485/4  wires  RS485  output     

Pull-up/Pull-down resistance 

OFF 

OFF 

ON/OFF 

  ON/OFF 

 

D4(  RS232/RS422/2  wires  RS485/4  wires 

RS485 select 

OFF 

OFF 

ON 

ON 

D5(  RS232/RS422/2  wires  RS485/4  wires 

RS485 select 

ON 

OFF 

OFF 

ON 

 

  The  2  wires  RS485/4  wires  RS485  output  bus  pull-up  and  pull-down  resistance  usually  should  be 

switched  on.  But  if  there  are  several  fiber  transmitters  or  receivers,  2  wires  RS485/4  wires  RS485 

output interfaces are connected together, only one of the 2 wires RS485/4 wires RS485 output Pull-up 

and Pull-down resistance should be switched on, the others should be switched off.       

 

The terminators can be switched on or off according to the RS485 bus connection. When the fiber 

transmitter or receiver is placed at the end point of bus, the terminators are usually switched on, but 

    Pin Name 

 

Data 

RS232 

TXD 

Data transmit signal; 

input

 

RXD 

Data 

receive 

signal; 

output 

GND 

GND of RS232 data 

NC

not connected

 

RS422 

TXD+ 

D

ata transmit signal “+”, 

input 

TXD- 

D

ata  transmit  signal  “−”, 

input 

RXD+ 

Data  receive 

signal  “+”, 

output 

RXD- 

Data  receive 

signal “−”, 

output 

4 wires 

RS485 

485 TX+ 

D

ata transmit signal “+”, 

input 

485TX- 

D

ata  transmit  signal  “−”, 

input 

485RX+ 

Data  receive 

signal  “+”, 

output 

485RX- 

Data  receive 

signal “−”, 

output 

2 wires 

RS485 

NC

not connected

 

NC

not connected

 

485+ 

Data sig

nal “+” 

485- 

D

ata signal “−” 

Summary of Contents for FTDR-S2-WSB

Page 1: ...FTDR S2 WSB User Manual ...

Page 2: ...BC Networks Ltd Table of Contents 1 Overview 3 1 1 Introduction 3 1 2 Technical Specification 3 1 3 Warranty 4 1 4 Instruction of Disassembly 5 2 Installation 6 2 1 Package Contents 6 2 2 FTDR S2 WSB Enclosure 6 2 3 Caution 10 2 4 Install Application 10 3 Dimensions 12 ...

Page 3: ...here is a fault cable or failed device the data path will turn around before it reaches the fault or failed unit and use the secondary data path Ring B to complete the link With this process the data path remains intact The data communication protocol is transparent and compatible with all the RS232 RS422 2 wires RS485 4 wires RS485 upper protocols The FTDR S2 WSB series Fiber Optic Modem can be w...

Page 4: ...voids the warranty Warranty does not cover mishandling and or abuse of the product Products comply with the following Safety Label for International Fiber Communication Equipment NOTE This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interfer...

Page 5: ...htening screws of box cover 1 or 4 8 screws in general 2 Remove lock nut for BNC with spanner 3 Remove cover plate 4 Remove tightening screws for printed circuit board PCB 5 In case the assembly has more than one PCB then continue removing the remain tightening screws until none left 6 Use snip nose pliers to loose the nut of flange and then remove optic cable connector jump wire 7 Snip off power ...

Page 6: ... supply adaptor One User Manual Please contact dealer or distributor if part is missing or damaged 2 2 FTDR S2 WSB Enclosure The Top View The Left View Connectors FTX1 Fiber Optical ST of the primary ring transmit FRX1 Fiber Optical ST of the primary ring receive FTX2 Fiber Optical ST of the secondary ring transmit FRX2 Fiber Optical ST of the secondary ring receive 1 2 3 4 DATA DIP DIP1 GND ...

Page 7: ...e are several fiber transmitters or receivers 2 wires RS485 4 wires RS485 output interfaces are connected together only one of the 2 wires RS485 4 wires RS485 output Pull up and Pull down resistance should be switched on the others should be switched off The terminators can be switched on or off according to the RS485 bus connection When the fiber transmitter or receiver is placed at the end point...

Page 8: ... contact closure of the secondary ring NC NC Alarm out C1A and C1B are alarming output nodes for the drying contact closure of the primary ring Situation 1 S1 is off C1A and C1B are open if the primary ring is normal Situation 2 S1 is on C1A and C1B are short circuit if the primary ring is failure or the power is off C2A and C2B are alarming output nodes for the drying contact closure of the secon...

Page 9: ...e used on this product DC 12VDC 24VDC Power Supply Ground AC There is no difference between the power supply can be connected into the device directly LEDs Definition POW Power Supply On if power input is OK FRX1 The primary ring Fiber Link Off if the fiber link is normal FRX2 The secondary ring Fiber Link Off if the fiber link is normal C1 contact closure of the primary ring On if the contact nod...

Page 10: ...the Point to Point Trunk Line Point to Multipoint Star topology all the FTDR S2 WSB Fiber Optic Modem should be set in the primary mode When selecting the Multi Drop Self healing Ring Mode only one FTDR S2 WSB Fiber Optic Modem should be set in the primary mode the others are set in the secondary mode 2 4 Install Application Notice In figure1 all the FTDR S2 WSB Fiber Optic Modem should be set in ...

Page 11: ... be made up of A FTX1 B FRX1 B FTX1 C FRX1 C FTX1 D FRX1 D FTX1 A FRX1 The primary fiber ring loop direction is clockwise The secondary fiber ring loop outside loop be made up of A FTX2 D FRX2 D FTX2 C FRX2 C FTX2 B FRX2 B FTX2 A FRX2 The secondary fiber ring loop direction is anti clockwise Dip1 OFF Dip1 ON Dip1 ON Dip1 ON ...

Page 12: ...Manual FTDR Rev1311 pdf Page 12 of 12 www kbcnetworks com Copyright KBC Networks Ltd 3 Dimensions mm 44 77 61 70 70 ...

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