RLH Industries FBX-SERIAL-1 User Manual

Serial Data Fiber Optic Converter
Transmit RS-232/422/485 serial data over fiber
with maximum reliability
Introduction
The RLH Serial Data Fiber Optic Converter transmits RS-
232/422/485 serial data over fiber optic cable. It transmits
simultaneously to each serial port, providing the option to
interface between one of three different serial data
communication standards.
Designed for operation in harsh environments, this fiber
converter allows for long distance communication while
providing immunity to EM/RFI and transient surges along the
fiber path. This rugged, industrial grade converter is ideal for
applicants where reliability is critical, and is suitable for use in
non temperature controlled environments.
A comprehensive set of LEDs on the front panel indicate power
input status, fiber link status, and RS-232/422/485 activity.
Features include redundant power inputs with a system alarm
contact for remote monitoring, and it includes both a DIN rail
clip and wall mount ears for ease of installation. This system is
designed, engineered, and assembled in the USA, and covered
by our Lifetime Warranty.
RLH Industries, Inc. • 936 N. Main Street, Orange, CA 92867 • Ph 800-877-1672 • Fax 714-532-1672 • info@fiberopticlink.com
RLH Industries, Inc.
fiberopticlink.com
Serial Data Fiber Optic Converter shown with
Features
Transparent RS-232/422/485 extension over fiber
Compatible with all MSA Compliant Gigabit SFPs
Supports RS-232 baud rates of 50 bps to 128 kbps
Supports RS-422/485 baud rates of 50 bps to 2.5 Mbps
Rotary Switch for RS-422/485 pull high/low resistor value
Compatible Protocols: DNP, Modbus, DF1, Profibus,
BACnet MS/TP, asynchronus HDLC
Supports Fiber Ring Configuration
Hardened to operate in -40°F to +158°F (-40°C to +70°C)
DIN rail or wall mount (Wall mount ears included)
Redundant Power Inputs (12~48VDC)
Designed, Engineered, and Assembled in the USA
Lifetime warranty
U S E R
G U I D E
UG-172 2025-0611
SFP Transceiver Installed
1