Comprehensive Product Summary – Moxa NPort Server Lite DE‑302

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### 1. Product Overview

Product Name: NPort Server Lite
Model: DE‑302
Series: NPort Server Lite Family
Article Number: DE‑302
Manufacturer: Moxa Technologies Co., Ltd. (Taipei, Taiwan)

The Moxa NPort DE‑302 is a compact, dual‑port Ethernet‑to‑RS‑232 device server designed to connect serial devices to a 10/100 Mb Ethernet network. It belongs to Moxa’s NPort Server Lite family, which provides cost‑effective, reliable, and easily configurable serial‑to‑Ethernet connectivity for industrial and commercial applications. The DE‑302 enables transparent data communication between serial devices and network hosts, allowing legacy RS‑232 equipment to be integrated into modern TCP/IP networks without requiring software modification.

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### 2. Key Features

- Dual RS‑232 Ports: Two independent DB9‑female serial ports supporting full‑duplex asynchronous communication.
- Ethernet Interface: 10/100 Mb Ethernet port with auto‑detection and RJ‑45 connector.
- High‑Performance Embedded CPU: 16‑bit processor with 512 KB RAM for stable, low‑latency data handling.
- Wide Baud Rate Range: Supports serial data rates from 50 bps up to 230.4 kbps.
- Multiple Operation Modes:
- Host‑Based / Driver Mode (Real COM for Windows, Real TTY for Linux)
- Pair Connection Mode
- TCP Server / TCP Client
- UDP Server / Client
- Transparent Serial‑to‑Ethernet Conversion: Enables existing serial applications to communicate over Ethernet without rewriting code.
- Flexible IP Configuration: Supports static IP, DHCP, DHCP/BOOTP, and BOOTP addressing.
- Comprehensive Management Tools: NPort Management Suite for Windows and Linux, including Configurator, Real COM Installer, NPort Monitor, and Batch Configurator.
- Data Packing and Delimiter Control: Adjustable delimiters and force‑transmit timers for optimized packetization.
- Access Control and Security: IP‑based access control lists configurable by server or port.
- Firmware Upgradeable: Field‑upgradable firmware via Configurator or Telnet.
- Compact Industrial Design: Rugged metal enclosure suitable for desktop or panel mounting.
- Power Supply: 230 VAC external power adapter included.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| CPU | 16‑bit embedded processor |
| Memory | 512 KB RAM |
| Ethernet Interface | 10/100 Mb auto‑detect, RJ‑45 connector |
| Serial Interface | 2 × RS‑232 ports, DB9‑female connectors |
| Baud Rate | 50 bps – 230.4 kbps |
| Data Bits | 5, 6, 7, 8 |
| Stop Bits | 1, 1.5, 2 |
| Parity | None, Even, Odd, Mark, Space |
| Flow Control | RTS/CTS, XON/XOFF, None |
| Dimensions (W × D × H) | 155 × 105 × 33 mm |
| Weight | Approx. 0.4 kg (typical) |
| Material | Metal housing, powder‑coated finish |
| Power Input | External 230 VAC adapter (included) |
| Operating Temperature | 0 °C – 55 °C (typical) |
| Storage Temperature | –20 °C – 85 °C |
| Humidity | 5 % – 95 % RH (non‑condensing) |
| Default IP Address | 192.168.127.254 |
| MAC Address | Factory‑assigned unique 48‑bit ID |
| LED Indicators | Power, Ethernet Link/Activity, Serial Tx/Rx |
| Mounting Options | Desktop, wall, or DIN‑rail (with optional kit) |

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### 4. Functionality

The DE‑302 acts as a bridge between serial devices and Ethernet networks. It encapsulates serial data into TCP/IP packets and transmits them over Ethernet, while also receiving network data and converting it back to serial form. This allows remote hosts to access serial devices as if they were directly connected to local COM ports.

Primary Use Cases:
- Connecting PLCs, barcode scanners, card readers, or sensors to Ethernet networks.
- Remote console access to routers, switches, or industrial controllers.
- Extending serial communication beyond RS‑232’s 15‑meter limitation.
- Integrating legacy serial equipment into SCADA or MES systems.

Compatibility:
- Operating Systems: Windows 95/98/ME/NT/2000/XP (Real COM driver), Linux (Real TTY driver).
- Protocols: TCP, UDP, IP, ARP, DHCP, BOOTP, Telnet.
- Software Integration: Compatible with Moxa PComm Lite Serial Control Library for custom application development.

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### 5. Components & Accessories

Included Items:
- NPort Server Lite DE‑302 main unit
- External 230 VAC power adapter
- Quick installation guide and documentation
- Software CD containing NPort Management Suite (Configurator, Real COM Installer, Monitor, Batch Configurator)
- Warranty card and compliance information

Optional Accessories:
- DIN‑rail mounting kit
- RS‑232 serial cables (DB9 M/F)
- Ethernet crossover cable for direct PC connection
- Replacement power adapter

Connectors:
- Ethernet: RJ‑45, 10/100 Mb auto‑MDI/MDI‑X
- Serial: 2 × DB9‑female RS‑232 ports (TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND)
- Power: Barrel‑type DC input jack (for external adapter)

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### 6. Installation & Setup

Network Configuration:
- Factory default IP: 192.168.127.254
- Supports configuration via:
- NPort Management Suite (recommended)
- ARP command (local LAN setup)
- Telnet Console (VT100 terminal)
- Static or dynamic IP assignment (DHCP/BOOTP supported).

Software Installation:
1. Run `Dssetup.exe` from the supplied CD to install NPort Management Suite.
2. Use Configurator to locate and configure NPorts via Broadcast Search or IP Search.
3. Assign IP, Netmask, Gateway, and operation mode.
4. Optionally, use Real COM Installer to map virtual COM ports on Windows hosts.

Mounting Options:
- Place on a flat surface or mount on wall/DIN‑rail using optional brackets.
- Ensure adequate ventilation and avoid exposure to moisture or vibration.

Configuration Interfaces:
- Telnet Console: Accessible via port 23; supports ANSI/VT100 terminal type.
- Configurator GUI: Provides full parameter control, firmware upgrade, and configuration import/export.
- Serial Console: Not applicable to DE‑302 (available only on NPort Express models).

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### 7. Performance & Capabilities

- Serial Throughput: Up to 230.4 kbps per port.
- Network Throughput: 10/100 Mb auto‑negotiation.
- Latency: Typically < 10 ms in driver mode.
- Port Expansion:
- Up to 128 ports per Windows 95/98/ME host.
- Up to 256 ports per Windows NT/2000/XP host.
- Data Packing: Adjustable delimiters (Delimiter 1/2) and force‑transmit timers (1–65535 ms) optimize packet size and transmission efficiency.
- TCP Alive Check: Configurable (0–99 min) to maintain or close idle connections.
- Pair Connection Mode: Extends serial communication over Ethernet between two NPorts, eliminating RS‑232 distance limits.
- Socket Modes:
- TCP Server: Waits for incoming connections (default port 4001).
- TCP Client: Initiates connection to a specified remote host.
- UDP Server/Client: Enables broadcast or multicast data transmission.
- Access Control: IP‑based filtering by server or port for secure host authorization.
- Fast Flush Function: Optional driver feature improving response time for applications using `PurgeComm()` (available in driver v3.2 and later).

Limitations:
- RS‑232 only (no RS‑422/485 support).
- No serial console port.
- Maximum baud rate limited to 230.4 kbps.
- Designed for LAN/WAN environments; not intended for harsh industrial EMI zones without additional protection.

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### 8. Standards & Compliance

- Network Standards: IEEE 802.3 10Base‑T / 802.3u 100Base‑TX
- Serial Standards: EIA RS‑232C
- Software Drivers:
- Windows Real COM driver (95/98/ME/NT/2000/XP)
- Linux Real TTY driver
- Protocols Supported: TCP, UDP, IP, DHCP, BOOTP, ARP, Telnet
- Regulatory Compliance:
- CE (EMC Directive)
- FCC Part 15 Class A
- RoHS (lead‑free manufacturing)
- Safety: EN 60950‑1 / UL 60950‑1 (typical for Moxa NPort series)
- Environmental: Designed for office and light industrial environments.

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### 9. Additional Information

Warranty:
Standard Moxa limited warranty (typically 5 years) covering defects in materials and workmanship.

Technical Support:
- Email: support@moxa.com.tw
- Website: [https://www.moxa.com](https://www.moxa.com)
Provides driver downloads, firmware updates, manuals, and FAQs.

Maintenance:
- Periodically check firmware version and update via Configurator.
- Back up configuration files using Export Configuration.
- Clean device with dry cloth; avoid solvents or liquids.
- Ensure stable power and network connections to prevent data loss.

Firmware Updates:
- Upgradable through Configurator or Telnet interface.
- Supports batch firmware upgrade for multiple devices of the same model.

Software Utilities Overview:
- Configurator: Central GUI for locating, configuring, and maintaining NPorts.
- Real COM Installer: Maps NPort serial ports to virtual COM ports on Windows hosts.
- NPort Monitor: Monitors port status and activity.
- Batch Configurator (npbc.exe / npbc.tgz): Command‑line tool for mass configuration and IP assignment (Windows and Linux versions).
- Uninstall Utility: Removes NPort Management Suite components cleanly.

Documentation & Updates:
- Comprehensive Software Installation Guide (Fourth Edition, May 2004).
- Revision History includes major updates such as the introduction of the “Fast Flush” driver function and renaming of utilities (e.g., NPort Manager → Real COM Installer).

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### Summary

The Moxa NPort Server Lite DE‑302 is a robust, dual‑port Ethernet‑to‑RS‑232 device server engineered for seamless integration of serial devices into Ethernet networks. With its 16‑bit CPU, 512 KB RAM, and support for multiple operation modes, it provides flexible connectivity for industrial automation, building management, and remote monitoring systems. The DE‑302’s comprehensive software suite simplifies configuration, monitoring, and maintenance, while its compact design and reliable performance make it a proven solution for extending the life and reach of legacy serial equipment in modern IP‑based infrastructures.