1. Product Overview

Product Name: IPORT112
Model: IPORT112
Series: IPORT / APORT Series IP-to-Serial Device Servers
Article Number: IPORT112
Manufacturer: Rayon Technology Co., Ltd.
Manufacturer Address: 2F, No. 177, Chung Shan 2 Rd., Lu Chou City, Taipei Hsien, Taiwan
Contact: Tel: +886-2-82858362 | Fax: +886-2-82857065
Email: rayon@ms1.hinet.net / info@rayontech.com.tw
Websites: [www.rayontech.com.tw](http://www.rayontech.com.tw), [www.computex.com.tw/rayon](http://www.computex.com.tw/rayon)

The Rayon IPORT112 is a compact, Linux-based IP device server designed to convert Ethernet (10/100Base-TX) communication into two configurable serial interfaces (RS232, RS422, or RS485). It enables remote access and control of serial devices over TCP/IP or UDP/IP networks, providing a reliable bridge between legacy serial equipment and modern Ethernet infrastructures. The device is part of Rayon’s industrial-grade APORT/IPORT series, known for robust performance, flexible configuration, and cross-platform driver support for Windows, Linux, and UNIX systems.

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2. Key Features

- Dual Serial Interface: Two independent serial ports configurable as RS232, RS422, or RS485 via DIP switch or web interface.
- Linux-Based Embedded System: Built on a 32-bit MIPS RISC CPU running at 100 MHz with 16 MB Flash ROM and 16 MB SDRAM for stable multitasking and network performance.
- Auto-Detecting Ethernet Interface: Supports 10/100 Mbps auto-negotiation on RJ45 connector.
- Flexible Configuration: Setup via web browser, Telnet, or console terminal. DIP switches allow hardware-level configuration.
- Multiple Communication Modes: Supports TCP Server, TCP Client, UDP Send/Receive, and UDP Multi-Serial modes.
- Virtual COM Port Support: Windows NT/2000/XP/Vista/7/8/10 virtual COM drivers; Linux raw TTY and SCO UNIX real TTY drivers.
- Auto Data Direction Control: Built-in automatic data direction control for RS485 communication.
- Cross-Platform Compatibility: Works with Windows, Linux, and UNIX systems using Rayon’s TPORT and RPORT virtual COM drivers.
- Web-Based Management: Integrated web server for configuration, firmware updates, and status monitoring.
- Compact Industrial Design: Rugged enclosure with small footprint (92 × 118 × 27 mm) suitable for control panels and embedded systems.
- Low Power Consumption: Operates at 5 VDC, 1200 mA.
- Environmental Tolerance: Operating temperature 5–40°C, humidity 10–90% RH.

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3. Technical Specifications

Processor & Memory:
- CPU: 32-bit MIPS RISC, 100 MHz
- Flash ROM: 16 MB
- SDRAM: 16 MB

Serial Ports:
- Quantity: 2
- Interface: RS232 / RS422 / RS485 (selectable per port)
- Connector: DB9 male
- Baud Rate: Up to 230,400 bps
- Console Port: Shared with Serial Port 1
- Configuration: Via DIP switch or software (web/console)
- Auto Data Direction Control: Supported in RS485 mode

Ethernet Interface:
- Type: 10/100 Mbps Ethernet (100Base-TX)
- Connector: RJ45
- Auto-negotiation: Supported

Power Requirements:
- Input Voltage: 5 VDC
- Current Consumption: 1200 mA

Physical Characteristics:
- Dimensions: 92 mm (W) × 118 mm (D) × 27 mm (H)
- Material: Industrial-grade enclosure (Rayon standard)
- Weight: Approx. 200 g (typical)

Environmental Conditions:
- Operating Temperature: 5°C to 40°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10%–90% RH (non-condensing)
- Storage Humidity: 5%–90% RH

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4. Functionality

The IPORT112 functions as an IP-to-Serial converter, enabling Ethernet-based communication with serial devices. It encapsulates serial data into TCP or UDP packets for transmission over IP networks, allowing remote access to serial equipment such as PLCs, sensors, barcode readers, and industrial controllers.

Operating Modes:
- TCP Server Mode: The IPORT112 listens for incoming TCP connections from clients. Ideal for applications where remote PCs initiate communication.
- TCP Client Mode: The device actively connects to a designated server IP and port, suitable for centralized data collection.
- UDP Mode: Supports both send and receive operations, enabling broadcast or multicast communication to up to four remote hosts.
- UDP Multi-Serial Mode: Allows multiple serial ports to share the same UDP port number for simultaneous data distribution.
- Real TTY Mode: Provides direct serial access for UNIX/Linux systems using fixed TTY device mapping.

Configuration Interfaces:
- Web Interface: Accessible via browser (default IP 192.168.1.254, password “11111”).
- Telnet Interface: Command-line configuration for advanced users.
- Console Port: Serial terminal access for setup and diagnostics.
- DIP Switches: Hardware-level configuration for interface type and firmware upgrade mode.

Use Cases:
- Industrial automation and SCADA systems
- Remote monitoring of serial-based sensors and instruments
- Integration of legacy RS232/RS485 devices into Ethernet networks
- Serial-over-IP communication for POS, access control, and data acquisition systems

Compatibility:
- Windows NT/2000/XP/Vista/7/8/10 (Virtual COM via TPORT/RPORT drivers)
- Linux (raw TTY driver)
- SCO UNIX (real TTY driver)

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5. Components & Accessories

Included Items:
- IPORT112 main unit
- 5 VDC power adapter (UP110 or UP220 recommended)
- User manual and software CD (includes drivers and utilities)

Optional Accessories:
- Console cable (RS232)
- Ethernet cable (RJ45)
- Mounting brackets or DIN-rail kit (optional)

Connectors:
- Ethernet: RJ45 (10/100Base-TX)
- Serial: Two DB9 male connectors
- Power: DC barrel jack (5 VDC input)

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6. Installation & Setup

Hardware Installation:
1. Connect the IPORT112 to a network hub or switch using a standard Ethernet cable.
2. Attach serial cables to the DB9 connectors for RS232/RS422/RS485 devices.
3. Configure DIP switches for desired serial interface type.
4. Connect the 5 VDC power adapter and power on the device.
5. Observe LED indicators for power and link status.

DIP Switch Functions:
- Bit 1: Console port enable (ON = console, OFF = normal serial)
- Bit 2: Firmware upgrade mode (ON = upgrade, OFF = normal)
- Bit 3–4: RS422/RS485 selection (ON = RS422, OFF = RS485)

Software Setup:
- Access the web interface at `http://192.168.1.254` (default).
- Configure IP address (static recommended), subnet mask, and gateway.
- Set serial port parameters (baud rate, parity, stop bits, flow control).
- Choose operating mode (TCP/UDP/Real TTY).
- Save and reboot to apply settings.

Driver Installation (Windows):
- Use Rayon’s TPORT or RPORT driver utilities (`tport_ap.exe`, `aport_ap.exe`).
- Map virtual COM ports to IPORT112’s IP and serial port numbers.
- Install via “Add Hardware” or “Device Manager” in Windows.
- Verify COM port availability in Device Manager.

Firmware Upgrade:
- Enable firmware upgrade mode via DIP switch 2.
- Connect via TFTP client to IP 192.168.1.254.
- Upload new firmware image (e.g., `aport112_xxxxxx.hg`).
- Reboot device after successful transfer.

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7. Performance & Capabilities

- Data Rate: Up to 230.4 kbps per serial port.
- Network Throughput: 10/100 Mbps auto-sensing Ethernet.
- Latency: Dependent on network conditions; optimized for low-latency serial-over-IP communication.
- Buffering: Internal FIFO buffers for stable data flow.
- Reliability: Embedded Linux OS ensures continuous operation and watchdog recovery.
- Auto-Reconnect: TPORT driver includes heartbeat mechanism to detect disconnections and re-establish TCP links automatically.
- Multi-Host Support: UDP mode supports up to four destination IPs for simultaneous data distribution.
- Limitations:
- TCP latency may vary with network congestion.
- Only one active TCP connection per serial port in TPORT mode.
- RS485 mode requires proper termination and biasing for long-distance communication.

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8. Standards & Compliance

- Ethernet Standards: IEEE 802.3 10Base-T / 100Base-TX
- Serial Standards: EIA/TIA RS232, RS422, RS485
- Protocol Support: TCP/IP, UDP/IP, Telnet, DHCP (optional), TFTP (for firmware)
- RFC Compliance: Supports RFC2217 (Telnet COM Port Control Option)
- Operating System Drivers:
- Windows Virtual COM (TPORT/RPORT)
- Linux GVMODEM and raw TTY drivers
- SCO UNIX RTTY driver
- Safety & EMC: Designed for industrial environments (compliance with CE/FCC standards implied by manufacturer)

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9. Additional Information

Warranty:
- Standard 1-year limited warranty covering defects in materials and workmanship.
- Excludes damage from misuse, unauthorized servicing, or incorrect power supply.
- Out-of-warranty repairs available at flat-rate service charge.

Support & Maintenance:
- Technical support via email (rayon@ms1.hinet.net).
- Firmware updates available through Rayon’s website or authorized distributors.
- RMA (Return Material Authorization) required for repairs; contact Rayon for RMA number and shipping instructions.

Maintenance Recommendations:
- Use only 5 VDC regulated power adapters (UP110/UP220).
- Avoid exposure to excessive heat or humidity.
- Periodically check firmware version and update if necessary.
- Use “ping” or web diagnostics to verify network connectivity.

Related Products in the APORT/IPORT Family:
- APORT200: IP to two RS232 serial ports.
- APORT020: IP to two ground-isolated RS232 ports.
- APORT101: IP to one RS232 and one ground-isolated RS422/485 port.
- APORT400 / APORT040: IP to four RS232 or ground-isolated RS232 ports.
- APORT800 / APORT080: IP to eight RS232 or ground-isolated RS232 ports.
- IPORT134 / IPORT134I: IP to four RS422/RS485 ports (with or without isolation).
- IPORT118: IP to eight RS232/RS422/RS485 ports.

Driver Utilities:
- TPORT Driver: For dedicated Windows systems requiring persistent TCP connections.
- RPORT Driver: For multi-user environments allowing dynamic port sharing.
- GVMODEM Driver: For Linux/UNIX fixed TTY mapping.
- RTTY Driver: For SCO OpenServer real TTY integration.

Firmware Upgrade Utility:
- wftp8.exe (Windows TFTP client)
- tftp (Linux/UNIX) for direct firmware upload

Diagnostic Tools:
- aport_search.exe / tport_search.exe: Broadcast utilities to locate devices on LAN.
- aport_ap.exe / tport_ap.exe: Configuration tools for virtual COM mapping.

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Summary

The Rayon IPORT112 is a versatile, industrial-grade IP-to-serial converter that bridges Ethernet networks with traditional serial communication systems. Its dual configurable RS232/RS422/RS485 ports, embedded Linux architecture, and comprehensive driver support make it ideal for industrial automation, remote monitoring, and system integration applications. With flexible configuration options, robust TCP/UDP communication modes, and cross-platform compatibility, the IPORT112 provides a reliable and scalable solution for extending serial connectivity over IP networks.