Industrial 4 Channel RS232 RS485 RS422 Fiber Media Converter Dual
Ring Redundant
Model: LNK-GYS200 series
Product Description & Overview
The Industrial 1~4Ch RS232/RS422/RS485 Double-ring Fiber Media
Converter represents an
advanced networking solution for industrial serial communication
systems requiring high reliability
and flexible topology configurations. This robust media converter
supports 1 to 4 channels of RS232,
RS422, and RS485 serial interfaces over fiber optic infrastructure,
enabling versatile network
architectures including point-to-point connections, chain networks,
star configurations, and redundant
ring topologies with self-healing capabilities. The dual-ring
protection mechanism ensures continuous
operation by automatically detecting fiber breaks and rerouting
data through alternative paths within
30 milliseconds, maintaining uninterrupted communication in
mission-critical industrial applications.
Engineered specifically for demanding industrial environments, this
converter effectively resolves the
traditional limitations of serial interface communication by
extending transmission distances while
maintaining high-speed data rates up to 115.2kbps per channel. The
implementation of fiber optic
technology completely eliminates electromagnetic interference,
ground loop problems, and lightning-
induced damage that commonly plague copper-based serial networks.
The device's advanced optical
isolation provides complete electrical separation between connected
equipment, significantly enhancing
data communication reliability, security, and confidentiality
across all transmission channels.
This sophisticated media converter finds ideal application in
various industrial sectors including factory
automation, process control systems, and critical infrastructure
monitoring where network reliability is
paramount. The flexible topology support allows for seamless
integration into existing networks while
providing scalability for future expansion. With its robust
construction and intelligent self-healing capabilities,
this solution offers industrial operators a reliable and secure
communication platform that dramatically
improves network resilience while reducing maintenance costs
associated with traditional serial
communication systems in electrically challenging environments,
making it particularly suitable for
transportation management systems, energy distribution networks,
and industrial IoT applications
requiring guaranteed data delivery.
Key Features Bullets
Proprietary IC Architecture
Built on self-developed integrated circuits, delivering optimized
signal processing and enhanced system reliability
Multi-Channel Independent Interface Design
Configurable 1-4 independent serial ports with complete physical
isolation between all channels
Dual-Fiber Redundant Ring Protection
Dual optical fiber lines with automatic sub-50ms switchover during
line failures to maintain communication integrity
Flexible Interface Configuration Options
Supports RS232/RS422/RS485 interfaces with 3-wire RS232 support and
comprehensive flow control signals
Automatic Baud Rate Adaptation
All serial channels support automatic baud rate detection from 0 to
115,200bps for asynchronous data transmission
Advanced Network Topology Support
Enables point-to-point, chain, star, and redundant ring network
configurations with self-healing capability
Industrial-Grade Electrical Protection
Complete optical isolation providing immunity to EMI, ground loops,
and lightning-induced surges
High-Speed Network Self-Healing
Redundant ring network protection with automatic fault detection
and recovery within 30 milliseconds
Wide Operating Temperature Range
Industrial temperature rating from -40°C to 85°C for harsh
environment deployment
Secure Data Transmission
Fiber optic technology ensuring complete electrical isolation and
data confidentiality across all channels
Technical Specifications & Indexes
Fiber |
Multi-mode Fiber:50/125um, 62.5/125um |
Maximum transmission distance | 2Km @ 62.5/ 125um multi mode |
fiber, attenuation (3dbm/km)Wave Length | 820nm |
Transmitting power | -12dBm (Min) ~-9dBm (Max) |
Receiver sensitivity | -28dBm (Min) |
Link budget | 16dBm |
Single-mode Fiber:8/125um, 9/125um |
Maximum transmission distance | 20Km |
Transmission distance | 20Km @ 9 / 125um single mode fiber, attenuation (0.35dbm/km) |
Wave Length | 1310nm |
Transmitting power | -9dBm (Min) ~-8dBm (Max) |
Receiver sensitivity | -27dBm (Min) |
Link budget | 18dBm |
RS232/422/485 Interface |
Rate | 0-115200Kbps |
Interface characteristics | EIA RS232 RS422 RS485 |
Connector | Phoenix terminal |
Working environment |
Working temperature | -40°C ~ 75°C |
Working Humidity | 5%~95 % (no condensation) |
Storage temperature | -40°C ~ 80°C |
Mechanical: |
Dimensions | 133mm×40mm×120mm (H×W×D) |
Casing | IP30 protection, Metal case |
Installation | 35mm DIN-Rail, Wall Mounting |
Weight | 685g |
Ordering information
LNK-GYS201 | Industrial 1Ch RS232, RS22 or RS85 Double-ring Fiber Media Converter: 2xOptical
port+1xRS232/RS485/RS422 port (Default FC, SFP or SC Fiber port optional) |
LNK-GYS202 | Industrial 2Ch RS232, RS22 or RS85 Double-ring Fiber Media Converter: 2xOptical port+2xRS232/RS485/RS422 port (Default FC, SFP or SC Fiber port optional) |
LNK-GYS204 | Industrial 4Ch RS232, RS22 or RS85 Double-ring Fiber Media Converter: 2xOptical port+4xRS232/RS485/RS422 port (Default FC, SFP or SC Fiber port optional) |
Application Scenarios
Industrial automation control network redundant ring systems
Critical infrastructure monitoring and protection networks
Factory production line multi-device communication networks
Power distribution SCADA system redundant fiber optic networks
Transportation signal control and monitoring systems
