🔌 Moxa Serial Device Server – Detailed Overview
Introduction
Moxa Serial Device Servers enable the seamless integration of serial devices into modern Ethernet networks. These devices allow legacy RS-232/422/485 serial devices to communicate over IP-based networks, providing centralized control, remote management, and enhanced system scalability.
Used across industrial automation, power utilities, transportation, and oil & gas sectors, Moxa’s serial device servers are known for their robust design, reliability, and industrial-grade performance.
⚙️ What is a Serial Device Server?
A serial device server is a networking hardware component that connects serial-based devices (e.g., sensors, PLCs, meters) to Ethernet networks. It converts serial signals (RS-232, RS-422, or RS-485) into TCP/IP or UDP packets, enabling remote monitoring and control over LAN/WAN or the internet.
🧩 Key Models of Moxa Serial Device Servers
Moxa offers a wide range of serial device servers tailored for different environments and use cases:
1. NPort 5100 Series (1-port)
Entry-level, compact
RS-232/422/485 support
DIN-rail or wall-mount design
2. NPort 5200 Series (2/4-port)
Ideal for small to medium serial device integration
Auto-sensing baud rate
High surge protection models available
3. NPort 5400 Series (4/8/16-port)
Industrial-grade rack-mount design
Dual LAN & redundant power inputs
SNMP & web-based configuration
4. NPort W2150/W2250 Series
Wireless serial device servers (Wi-Fi support)
802.11a/b/g standard
Ideal for remote or mobile serial connections
5. NPort S8455I Series
Modbus Gateway + Serial Device Server
Redundant ring Ethernet support
Wide-temp operation (-40 to 75°C)
🔑 Core Features of Moxa Serial Device Servers
Feature Description
Multi-Protocol Support Supports TCP Server, TCP Client, UDP, Real COM, and Pair Connection modes
Wide Serial Compatibility RS-232/422/485 ports with auto-detection and switching
Web-Based Management Easy configuration via browser interface or CLI
Redundant Power Inputs Dual power sources ensure uninterrupted operation
DIN-Rail & Rack Mounting Industrial form factors for space optimization
Secure Data Transmission SSL/TLS encryption, SSH support (on secure models)
Virtual COM Drivers Allows legacy software to communicate with devices over Ethernet
Event Warning System Email, SNMP traps, and relay output alerts
Robust Build Industrial-grade casing, surge protection, and wide-temp operation
📐 Technical Specifications (Varies by Model)
Specification Typical Values
Serial Ports 1 to 16 (RS-232/422/485)
Ethernet Interface 10/100 Mbps RJ45 (some models support fiber or Wi-Fi)
Baud Rate 50 bps to 921.6 kbps
Operating Temp -10°C to 60°C (standard), -40°C to 75°C (wide-temp)
Input Voltage 12-48 VDC or 100-240 VAC (depending on model)
Mounting Options DIN-rail, wall, or 19” rack mount
Certifications CE, FCC, UL, ATEX, IECEx (varies by model)
🏭 Applications of Moxa Serial Device Servers
✅ Industrial Automation
Connect legacy PLCs, HMIs, barcode scanners, and sensors to SCADA systems
✅ Energy & Utilities
Integrate serial IEDs (Intelligent Electronic Devices) into Ethernet-based substation networks
✅ Transportation
Track serial GPS devices or vehicle telemetry in intelligent transportation systems (ITS)
✅ Oil & Gas
Link field instrumentation with central control rooms for real-time monitoring
✅ Manufacturing
Retrofit old machines into smart factories through serial-to-Ethernet conversion
🌐 Operating Modes
Moxa device servers support multiple communication modes for flexibility:
TCP Server Mode: Waits for host system to establish connection
TCP Client Mode: Actively connects to pre-defined IP address
UDP Mode: Broadcasts or sends data to multiple hosts
Pair Connection Mode: Extends serial connections over Ethernet
Real COM Mode: Emulates COM ports for software compatibility
✅ Benefits of Using Moxa Serial Device Servers
🧠 Easy Integration – Seamlessly link serial devices to modern networks
🛡️ Industrial Reliability – Survive harsh environments with rugged design
📶 Remote Management – Web console, SNMP, Telnet, or CLI for monitoring
💡 Smart Utilities – Real COM mapping, event alerts, and system diagnostics
🏭 Versatile Applications – Widely used in industrial IoT and legacy system upgrades
🛠️ Why Choose Moxa?
35+ years of experience in industrial networking
Globally trusted in mission-critical infrastructure
Strong technical support and documentation
Compliance with international safety and communication standards
