Fiber Optic to RS-232/
422/485 Converter
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 to + 30 VDC
Fiber optic transmission offers the benefits of wide bandwidth, immunity
to EMI/RFI interference, and secure data transmission. ADAM-4541/
ADAM-4542 can be used as an RS-232/422/485 point-to-point or pointto-mutipoint connection for transmitting and converting full/half-duplex
signals and their equivalents within a fiber optic environment. Fiber optics
is the perfect solution for applications where the transmission medium
must be protected from electrical exposure, lightning, atmospheric
conditions or chemical corrosion.
High Bandwidth
• Future signal capacity expansion
The ADAM-4541/4542 is specifically designed to link various machinery
equipped with an 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) µm.
Low signal radiation
Secure transmission
Lightning immunity
High-voltage installation
Small Size
• Less duct space
• Fewer additional ducts installed
Low Attenuation
Fiber Optics
820 nm
1310 nm
Transmission Distance
2.5 km
15 km
Optical Power Budget
Advantages of Fiber Optics
All Dielectric
Power Consumption
12.5 dB
1 W (typical);
1.5 W (max.)
9 dB
1.6 W (typical);
2.1 W (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
• Greater distance / fewer repeaters
• Less installation and maintenance
Ordering Information
Optical Signals
❑ ADAM-4541: Mulit-Mode Fiber optic to RS-232/422/485
converter with mounting bracket
• No ground loops
• No spark hazard
• Operation in flammable areas
❑ ADAM-4542: Single-Mode Fiber optic to RS-232/422/485
converter with mounting bracket
Daughterboards and Modules