User Manual

ManualsBrandsAdvantech ManualsAutomationMedia Converter, Fibre Multi-Mode - RS232/RS422/RS485, Fibre Ports 2ST

Part No. 2000454100 1st Edition Printed in Taiwan April 1998ADAM and the ADAM logo are trademarks of Advantech.

Introduction

Fiber optic transmission offers the benefits of wide

bandwidth, immunity to EMI/RFI interference, and

secure data transmission. The ADAM-4541 can be

used as an RS-232/422/485 point-to-point or

point-to-multipoint connection for transmitting and

converting full/half-duplex signals and their

equivalents within a fiber optic environment. Fiber

optics are the perfect solution for applications where

the transmission medium must be protected from

electrical exposure, lightning, atmospheric conditions

or chemical corrosion.

The ADAM-4541 is specifically designed to link

various machinery equipped with RS-232/422/485

communication ports (such as computer systems or

manufacturing machines) across distances in excess

of 2.5 km. Using standard ST connectors, the

module's fiber optic ports can accommodate a wide

range of fiber optic cable sizes, including 62.5/125 mm.

Features

* Compact size economizes space

* Direct plug-and-play

* Easily mounted on a DIN-rail, panel or piggyback

* Transmission speeds of up to 115.2 kbps

* Multi-mode optical fibers enable transmission

farther than 2.5 km

* Half/Full-duplex, bidirectional transmission mode

* Avoids lightning strikes and EMI/RFI interference

* Prevents damage from electrostatic discharge

* Stable and error-free data transmission

* Automatic internal RS-485 bus supervision

* No external flow control signals required for

RS-485

* Transient suppression and over-current protection

on RS-422/485 data lines

* Reserved space for termination resistors

* Power and data flow indicators for

troubleshooting

* Power requirement: +10 ~ +30 V

S E R I A L C O M M U N I C A T I O N I N T E R F A C E F O R I N D U S T R I A L A U T O M A T I O N

ADAM-4541

Fiber Optic to RS-232/422/485 Converter

Specifications

* Casing: ABS with captive mounting hardware

* Communication mode: Asynchronous

* Fiber optics: Multimode

* Connector: Plug-in screw terminal

* Fiber port: ST

* Transmission distance: Over 2.5 km

* Wavelength: 820 nm

* Optical power budget (attenuation): 12.5 dB

(measured with 62.5/125 mm optical fiber)

* Transmission mode: Full/Half-duplex, bidirectional

* Transmission rate: Up to 115.2 kbps

* Accessories (included): Nylon DIN-rail mounting

adapter, SECC panel mounting bracket

* Operating temperature: -10 ~ 70° C

(14 ~ 158° F)

* Operating humidity: 5 ~ 95% (non-condensing)

* Power consumption: 1 W (typical); 1.5 W (max)

Note: Multi-mode fiber optics are designed for

industrial applications.

50/125 mm, 62.5/125 mm, and 100/140 mm

are commonly used.

Installation

Initial Inspection

We carefully inspect the ADAM-4541 both

mechanically and electrically before we ship it. It

should be free of marks and scratches and in perfect

condition on receipt.

As you unpack the module, check it for signs of

shipping damage (damaged box, scratches, dents,

and so on). If it is damaged or fails to meet our

specifications, notify our service department or your

local sales representative immediately. Also, call the

carrier immediately and retain the shipping carton and

packing material for inspection by the carrier. We will

then make arrangements to repair or replace the unit.

Summary of content (4 pages)

PAGE 1
SERIAL COMMUNICATION INTERFACE FOR INDUSTRIAL AUTOMATION ADAM-4541 Fiber Optic to RS-232/422/485 Converter Introduction Specifications * Casing: ABS with captive mounting hardware Fiber optic transmission offers the benefits of wide bandwidth, immunity to EMI/RFI interference, and secure data transmission.
PAGE 2
Before you begin installation, please make sure you have the following items: • 1 ADAM-4541 module • 1 mounting bracket • 1 user's manual • 1 3P to DB 9 cable Default Defaultsettings Function Baud rate Data format Switch and jumper settings Switch settings Both modules are not addressable by the host computer. The baud rate and data format must be set using SW1 and SW2 located inside the module.
PAGE 3
Example Program This program can be used as a diagnostic test for the ADAM-4541. It will transmit a string to COM1 and then receive a string from COM1 (a loop-back test). Program: LOOPBACK.C Signal Wiring When you run the example program, you must connect the ADAM-4541's terminals as follows: #include #include #include #include
PAGE 4
(R) +Vs Possible reasons for malfunction Ø The TX and RX connections are reversed. Solution: Make sure the fiber connection is made so that the TX of one end is connected to the RX of the other. (B) GND 10 Tr o u b l e s h o o t i n g + Ø Poor connection between the ADAM-4541 and the communication port. Solution: Make sure the ADAM-4541 is securely plugged into the communication port. Ø Attenuation on the fiber causes the signal level to drop below the accepted level.