3One data 277/B User manual

Your

Serial and Data Communications Expert

Shen zhen 3onedata Technology Co.,Ltd

Model277/B

RS-

485/422

Fiber

Converter

(SM

MM)

ntroduction

M odel 277 /B is one kind can offer RS-485/422 serial port carry

transparent optic fib er modem of transmission to get end to user, no

need patch cords set up, switch over automatically, and can detect

and examine the signal speed automatically, zero delays time to

transmit automatically. Model277/B adopt optic fib er transmit,

hav e isolate protection, data privacy is fine , working steady, data ,

such threats to communication equipment as the wave is welled up

and interfered with electromagnetically that the effective one has

prevented the abominable environment from being struck by

lightning, can work in the abominable and dangerous environment

r eliably.

Can be used in occasions such as various industrial control, course

controlling, traffic controlling and intellectual district , especially

suit the bank, electricity and interfering with environment

department and system with the special requirement

electromagnetically .

Packing

ist

Model 277/B is shipped with following items.

1. Model277/B ×1

2. 5VDC power adapter ×1

2. User manual ×1

eatures:

1. Extend RS-485/422 transmission

up to 120km with single-mode( SM )

up to 2km with multi-mode(MM)

2. Transmit asynchronously, point-to-point to use, speed reach

500 Kbps

3. 600W surge protection, 1500W surge protection

Your

Serial and Data Communications Expert

Shen zhen 3onedata Technology Co.,Ltd

4. E xamine signal speed automatically, zero delay time

5. Plug-and-Play (Device is hot-pluggable , Data format Auto-

sensing & Self-adjusting )

inout

Configuration:

Power

the power supply input is 5VDC-IN.

Power:

DCIN

5VDC input

RS-485/422,Optical

fiber

interface

Optical

fiber

interface:

Optic fib er interface need use in pairs, OUT port is fiber send side ,

connect another long-range light of interface fiber receive end IN;

IN port is fiber receive side , connect long-range same fiber send

side :

Optic fib er s spent both ends mark the label (the following picture

show: A-A, B-B, can also mark another: A1-A2, B1-B2), in order to

use.

Your

Serial and Data Communications Expert

Shen zhen 3onedata Technology Co.,Ltd

NOTE:

SC, ST or FC, for optic fiber interface, SM is look the

same to MM for form. For example,Model277 SM /B /SC,the optic

fiber interface(SC) is look the same to Model277 MM /B /SC.

RS-485/422:

MODEL277/ B RS-485/422 interface adopt 5 bit terminal block.

RS-485/422:

T+/D+

RS-422 send+/ 485 +(A)

T-/D-

RS-422 send-/ 485 -(B)

R+

RS-422 receive+

R-

RS-422 receive-

GND

Signal ground

LED

indications:

Specifications:

Standards : EIA RS -485,RS-422 standard

Transfer rate: 300~500K bps, auto test serial signal rate detect signal

speed automatically, zero delay time,

Transfer distance: RS-485 /422 side: 1.2K m (96 00bps)

Fiber optic:20,25,40,60,80,100,120km(SM),

2,5 km(MM) optional

Fiber connector: 2 ×SC, 2 ×

ST,

2×FC optional

Wavelength:1310nm

Fiber optic cables:Single Mode:8.3/125,8.7/125,9/125 or 10/125 um

Power

Green , Power supply indication

On: power joined; Off: no power connect

RxD

G reen light, optic fib er interface receive

data point out and concurrently mere port

report an emergency and ask for help or

increased vigilance, on: There are data that

are received; Off : Have data receive

TxD

Green light, optic fib er interface send

datum instruct

On: Have data send ; Off: no data send

Your

Serial and Data Communications Expert

Shen zhen 3onedata Technology Co.,Ltd

Muti-Mode:50/125,62.5/125 or 100/125 um

600 W surge protection;1500W static protection

Power input: +5VDC power supply input

Dimensions: 94.0mm ×71mm ×26.0mm

Operating temp: -25 ° C to70 ° C

Storage temperature: -40 to 85 ° C

Operating humidity : 5% to 95% (no condensation)

Warranty: 5 years

Approvals: FCC,CE, RoHS approvals

Applications

Figure

Extending

the

RS485

data

distance

Figure

Extending

the

RS422

data

distance

Installation

Model277/B provides DIN-rail and wall mounting two types of

installation.

Wall

mounting

installation

Your

Serial and Data Communications Expert

Shen zhen 3onedata Technology Co.,Ltd

DIN-Rail

Installation

Troubleshooting

instructions:

1. Electric port and optic port inconnection, insert the power

supply, PWR light, RXD light.

2. Use optic fiber short the optic port IN and

OUT,

RXD OFF.

3. Perform a loop back test on two Model277/B converters. Attach

the two Model277/B converters by attaching the FIBER IN to the

FIBER OUT using a SM or MM Fiber Optic Cable ( Make sure the

Your

Serial and Data Communications Expert

Shen zhen 3onedata Technology Co.,Ltd

converter fiber optic cables are connected properly ,if Model277/B is

SM,using SM; If Model277/B is MM,using MM)

Connect the

Model277/B RS-485 port or RS-422 port to a PC. Send ASCII

Characters from a hyper terminal program from one converter to the

other. This will test both the transmit and receive functions.

Model277/B

FAQ:

LED

indicator

OFF

1. Power supply insert incorrect

2. Choice incorrect power supply ( 5 VDC )

LED

indicator

instruction

1. PWR ON: Product work normally

2. TXD indi c ator flash: optic port transfer data

3. RXD indicator flash: optic port receive data

4. RXD ON: optic connection incorrect （electric port in

connection, used to optic port alarm indicator ）

Communication

failure

1. Using incorrect power supply

2. Optic port or electric port connection incorrect.

3. Optic fiber port do not inosculate to the equipment interface

4. The equipment come from different supplier

5. Single-mode optic fiber uses multi-mode equipment or multi-

mode optic fiber uses single-mode equipment

6. The optic fiber connector is incorrect, high error code,

attenuation large.

Certifications:

Shenzhen

3onedata

Technology

Co.,Ltd

Tel: +86-755-26702688 Fax: +86-755-26703485

www.3onedata.com

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