ADAM
and the ADAM logo are trademarks of Advantech.
Part No. 2000000330 1st Edition Printed in Taiwan May 1999
DC
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
User's Manual
ADAM-4541
Fiber Optic to RS-232/422/485 Converter
ADAM-4542
Single-mode Fiber Optic to RS-232/422/485
Converter
Introduction
Fiber optic transmission offers the benefits of
wide bandwidth, immunity to EMI/RFI interference,
and secure data transmission. The ADAM-4541/
ADAM-4542 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-4541/4542 is specifically designed to link
various machinery equipped with RS-232/422/
485 communication ports (such as computer
systems or manufacturing machines). Using
standard ST connectors, the module's fiber optic
ports can accommodate a wide range of fiber
optic cable sizes, including 62.5/125 (9/125) m.
F
eatures
* 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
* Optical fibers enable transmission of 2.5 km for
ADAM-4541 and 15 km for ADAM-4542.
* 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
* LED for power and data flow indication
* Power requirement: +10 ~ +30 V
Specifications
ADAM-4541
ADAM-4542
Fiber Optics
multi-mode
single-mode
Wavelength
820 nm
1310 nm
Transmission
Distance
2.5 km
15 km
Optical Power
Budget (attenuation)
12.5 dB
9 dB
Power Consumption
1 W (typical);
1.5 W (max.)
1.6 W (typical);
2.1W (max.)
* Casing:
ABS with captive mounting hardware
* Communication mode:
Asynchronous
* Connector:
Plug-in screw terminal
* Fiber port:
ST
* Transmission mode:
Full/Half-duplex,
bidirectional
* Transmission rate:
Up to 115.2 kbps
* Operating temperature:
-10 ~ 70° C
(14 ~ 158° F)
* Operating humidity:
5 ~ 95% (non-condensing)
* Accessories (included):
Nylon DIN-rail
mounting adapter, SECC panel mounting
bracket
Note:
Fiber optics are designed for industrial
applications.
50/125 m, 62.5/125 m, and 100/140 m
are commonly used for multi-mode;
9/125 m are commonly for single-mode.
Installation
Unpacking
The ADAM-4541/4542 package includes the
following:
• 1 ADAM-4541 or ADAM-4542 module
• 1 mounting bracket
• 1 User's Manual
• 1 3P to DB 9 cable
(Red:RX, white:TX, Black:GND)
