4Ch RS-232/422/485 To Ethernet Server

4Ch to Ethernet Server Overview

The LNK-NC604 Serial Device Server enables seamless integration of industrial serial equipment into modern Ethernet networks. It converts RS232, RS422, and RS485 serial interfaces to 10/100M Ethernet, allowing centralized management and remote access to distributed serial devices and host computers through standard IP networks.

This robust device supports a comprehensive suite of network protocols including HTTP, TCP, UDP, ARP, ICMP, DNS, and DHCP, ensuring reliable communication across diverse network environments. It features Windows Native COM port support with automatic recovery functionality that reestablishes connections after network interruptions.

For flexible configuration, the LNK-NC604 provides multiple management options through a dedicated Windows-based utility and an intuitive web interface. These tools guide administrators through device setup, monitoring, and maintenance processes. All configurations can be performed remotely via network or locally through serial connection, with support for gateway and router traversal. Users can easily define IP addresses, select between Server and Client operation modes, and adjust data packet sizes according to application requirements.

With minimal setup, the LNK-NC604 quickly brings traditional serial devices online, creating an efficient bridge between legacy equipment and contemporary network infrastructure for immediate internet connectivity.

4Ch to Ethernet Server Features

• Full TCP/IP Protocol Suite Compliance
  Engineered for seamless network integration, the device strictly adheres to international TCP/IP standards, ensuring reliable data packet delivery and full interoperability with existing network infrastructure and management systems.
• Auto-Negotiating Fast Ethernet Port
  Features a 10/100Mbps auto-MDI/MDIX Ethernet interface that automatically detects and negotiates network speed and duplex mode, eliminating the need for crossover cables and simplifying plug-and-play installation.
• High-Density Multi-Protocol Serial Hub
  Integrates four independent serial ports, each universally compatible with RS-232, RS-422, and RS-485 standards. This design provides a centralized access point for numerous serial devices from a single network node.
• Robust Serial Line Protection
  All serial signal lines are equipped with built-in 15 kV ESD (Electrostatic Discharge) surge protection, safeguarding connected equipment from voltage spikes and transients to ensure operational stability in harsh industrial environments.
• Versatile Data Transport Modes
  Supports an extensive range of operational modes including TCP Realport, UDP Realport, Multi-screens TTY, PPP dial-out, Line printer daemon, MCP, and Group Realport, offering flexibility for diverse application requirements.
• Dual-Access Management Interface
  Offers administrators flexible configuration options through both Telnet for command-line control and an intuitive Web browser interface for graphical user management, facilitating easy local or remote setup.
• Flexible Wide-Range Power Input
  Designed with a versatile wide-range DC power input (5/12/24/48V), making it adaptable to various industrial power standards and environments, from low-voltage control panels to telecom installations.
• Compact Industrial Form Factor
  Housed in a compact and rugged metal enclosure with dimensions of 160mm (L) x 89mm (W) x 29mm (H), engineered for space-efficient deployment on DIN rails or in control cabinets.

4Ch to Ethernet Server Technical Indexes

4Ch to Ethernet Server Ordering Information

4Ch to Ethernet Server Application

The LNK-NC604 Device Server is a pivotal Network Access Terminal designed for integrating Legacy Serial Equipment into modern Fiber Optic Ethernet Backbones. It acts as a Protocol Conversion Gateway, enabling Real-Time Data Aggregation and Remote Telemetry from dispersed industrial assets.

A primary application is within Industrial Automation Networks, where it facilitates Centralized SCADA Monitoring and Remote PLC Management by converting Multi-Protocol Serial Signals (RS-232/422/485) from devices like CNC Controllers, Bar Code Scanners, and Sensor Arrays into Standard TCP/IP Ethernet Frames. This allows for Long-Distance Data Transmission over Gigabit Fiber Optic Links, overcoming the limitations of traditional copper serial cabling.

Furthermore, it is ideal for building resilient IoT Gateway Solutions in Smart City Infrastructure and Telecommunications Transmission Networks. It enables Network Operation Centers (NOC) to monitor and manage Optical Transmission Equipment, Remote Terminal Units (RTU), and Network Switches via console ports. Its robust design, featuring 15kV ESD Surge Protection and Wide-Range DC Power Input, ensures reliability in electrically harsh environments. Support for cross-network communication via Gateway Traversal allows for the creation of Secure, Distributed Data Acquisition Networks, streaming Telemetry Data seamlessly across Wide Area Networks (WAN) to central OSS/BSS Platforms and Cloud Management Systems.

After-Sales and Warranty Policy

It is composed of online customer service and telephone customer service,

providing product consultation, remote technical support, maintenance and acceptance services.

Service Policy: Three-month replacement and three-year warranty.

Replacement: Within three months of purchasing a series of products, after testing the product failure

by technicians and man-made damage caused by non-natural disasters, the purchaser can directly

go to the purchasing point to replace the same type of products.Or a product of comparable performance.

If there is no trouble in product testing, the original sample will be returned.

Warranty: Man-made damage caused by non-natural disasters, our company's free warranty period is 1 year.

[The following circumstances do not fall within the scope of replacement and free maintenance]

1.Damage caused by operation and maintenance not in accordance with the instructions in the product manual.
2.Damage caused by human factors, such as inappropriate voltage input, water intake and breakage.
3.Damage to products caused by natural disasters, such as lightning, earthquakes, fires, etc.
3.Unauthorized alteration of the inherent settings or repair without the company's permission.
4.Products beyond the scope of free maintenance.
5.Damage caused by transportation, loading and unloading during repairs sent by customers.
6.The product bar code or model on the product warranty card does not conform to the product itself.
7.Failure or damage caused by other non-product problems such as design, technology, manufacturing and quality.

Established in 2001& headquartered in Shenzhen, E-link China Technology Co., Ltd. (E-link) is a leading Fiber Optic Communication and CCTV Security Transmission product manufacturer in China. Our main products include active equipments including fiber media converters, CCTV fiber converters, CCTV over Ethernet Converters (HD-SDI over Ethernet, HDMI over Ethernet, Power over Ethernet), etc. With rich experience in providing high quality products in telecom and CCTV business, E-link has a large manufacturing base in Shenzhen, able to deliver cost-effective solutions to serve our customers successfully.

E-Link Quality:

• ISO9001 Quality System

• Full-Spectrum environment and electrical testing of all product design

• 48 hours aging test before delivery

• Qualified CE, RoHS, FCC

Since the launch of our products on the domestic market and international market, we have won a good reputation for our high quality products and sincere services. Our products are widely applied to network systems of Telecom, Radio and Television, Public Security, Bank ,ect. To be in line with different needs of different customers, we have people to trace the latest market information so as to keep our products competitive and vital.

Our knowledgeable sales, technical support and engineering staff are dedicated to understanding your requirements and designing products & solutions to meet your needs. We shall be pleased to provide you fiber optical network products with our best price, superior quality and fast delivery.