1. Product Overview

Product Name: IPORT118
Model: IPORT118
Series: IPORT / APORT Series – IP to Serial Port Converters
Article Number: IPORT118
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 IPORT118 is a Linux-based IP device server designed to convert Ethernet (10/100Base-TX) communication into multiple serial interfaces. It provides eight configurable RS232/RS422/RS485 ports through DB9 male connectors and supports both hardware DIP switch and software configuration. The device enables remote serial communication over TCP/IP or UDP/IP networks, offering compatibility with Windows, Linux, and UNIX systems. It is part of Rayon’s industrial-grade APORT/IPORT series, engineered for automation, data acquisition, and networked serial device integration.

---

2. Key Features

- Multi-Port Serial Connectivity: Eight independent serial ports supporting RS232, RS422, or RS485 interfaces, selectable per port via DIP switch or software.
- High-Speed Communication: Supports baud rates up to 230,400 bps for each serial channel.
- 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, ensuring stable multitasking and network performance.
- Flexible Network Integration: Auto-detecting 10/100 Mbps Ethernet interface with RJ45 connector for seamless LAN connectivity.
- Multiple Operating Modes: Supports TCP Server, TCP Client, UDP Send/Receive, and UDP Multi-Serial modes for versatile network communication.
- Cross-Platform Driver Support:
- Windows NT/2000/XP/Vista/7/8/10 Virtual COM driver (TPORT and RPORT modes)
- Linux raw TTY driver (GVMODEM)
- SCO UNIX real TTY driver (RTTY)
- Web, Telnet, and Console Configuration: Device setup and management via web browser, Telnet session, or serial console.
- Auto Data Direction Control: Automatic transmit/receive switching for RS485 communication.
- Firmware Upgradeable: Supports TFTP-based firmware updates through console and network interface.
- Compact Industrial Design: Rugged metal enclosure suitable for control cabinets and industrial environments.
- Power Efficiency: Operates on 5 VDC at 1.6 A (nominal 8 W power consumption).
- Environmental Tolerance: Designed for 5–40°C operating temperature and up to 90% relative humidity.

---

3. Technical Specifications

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

Network Interface:
- Ethernet: 10/100 Mbps auto-detecting (100Base-TX)
- Connector: RJ45
- Protocols: TCP/IP, UDP/IP
- Configuration: Static or DHCP IP assignment

Serial Interfaces:
- Number of Ports: 8
- Interface Types: RS232 / RS422 / RS485 (software or DIP switch selectable)
- Connector Type: DB9 male
- Baud Rate: Up to 230,400 bps
- 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
- Console Port: Shared with Serial Port 1

Power Requirements:
- Input Voltage: 5 VDC
- Current Consumption: 1.6 A
- Power Adapter: UP110/UP220 (regulated 5 VDC output)

Physical Characteristics:
- Dimensions: 205 × 135 × 48 mm
- Weight: Approx. 0.8 kg
- Material: Metal enclosure (Rayon industrial-grade housing)

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

---

4. Functionality

The IPORT118 functions as a network-to-serial gateway, enabling Ethernet-based systems to communicate with legacy serial devices. Each of the eight serial ports can be independently configured for RS232, RS422, or RS485 operation, allowing flexible integration with diverse equipment such as PLCs, sensors, barcode scanners, and industrial controllers.

Operating Modes:
- TCP Server Mode: The IPORT118 listens for incoming TCP connections on assigned ports, allowing remote clients to access serial devices.
- TCP Client Mode: The device initiates a connection to a designated server, suitable for centralized data collection.
- UDP Mode: Supports both send and receive operations, enabling broadcast or multicast serial data transmission.
- UDP Multi-Serial Mode: Allows multiple serial ports to share the same UDP port number for simultaneous data distribution.
- Real TTY Modes:
- *COM Real TTY Mode* (UDP-based) for Windows and SCO UNIX systems.
- *GVMODEM Real TTY Mode* (TCP-based) for Linux/UNIX systems.

Configuration Interfaces:
- Web Interface: Accessible via browser at default IP 192.168.1.254 (password: 11111).
- Telnet Interface: Command-line configuration and diagnostics.
- Console Interface: Serial terminal access via port 1 (115200 bps, 8N1).

Compatibility:
- Windows (NT through Windows 10) using Rayon’s TPORT or RPORT virtual COM drivers.
- Linux and UNIX systems using GVMODEM or RTTY drivers.
- Supports RFC2217 for remote serial port configuration via Telnet.

Use Cases:
- Industrial automation and SCADA systems
- Remote serial device management
- Data acquisition and monitoring
- POS and kiosk systems
- Building management and environmental control systems

---

5. Components & Accessories

Included Items:
- IPORT118 main unit
- UP110 or UP220 5VDC power adapter
- User manual and software CD (drivers and utilities)

Optional Accessories:
- Console cable (RS232)
- Ethernet cable (RJ45)
- DIN-rail or wall-mounting brackets
- Replacement power supply

Connectors:
- 1 × RJ45 Ethernet port
- 8 × DB9 male serial ports
- Power input jack (5VDC)
- DIP switch block for interface and mode selection

---

6. Installation & Setup

Hardware Installation:
1. Connect the IPORT118 to a LAN hub or switch using a standard Ethernet cable.
2. Attach the 5VDC power adapter (UP110/UP220).
3. Configure DIP switches:
- Bit 1: Console enable (ON) / Normal serial port (OFF)
- Bit 2: Firmware upgrade mode (ON) / Normal operation (OFF)
- Bits 3–4: RS422 (ON) / RS485 (OFF) interface selection for specific ports.
4. Connect serial devices to DB9 ports.
5. Power on the unit and verify LED indicators for network and serial activity.

Software Setup:
- Access the web configuration page via browser (default IP 192.168.1.254).
- Configure network parameters (static IP, subnet mask, gateway).
- Assign serial port modes and communication parameters.
- Save and reboot to apply settings.

Driver Installation (Windows):
- Use Rayon’s aport_ap.exe or tport_ap.exe utilities to map virtual COM ports.
- Install drivers via ainstall.exe or tinstall.exe depending on mode.
- Verify COM port assignments in Device Manager.

Linux/UNIX Setup:
- Install GVMODEM or RTTY drivers from provided tar packages.
- Configure `/etc/gtstcpd/gtstcpd.cf` or `/etc/nasd.rc` for IP and port mapping.
- Start daemon processes (`gtstcpd.rc start` or `/etc/nasd.rc`).

Firmware Upgrade:
- Enable firmware upgrade mode via DIP switch 2 (ON).
- Use TFTP client or Rayon’s `wftp8.exe` utility to upload new firmware image.
- Default upgrade IP: 192.168.1.254.

---

7. Performance & Capabilities

- Serial Throughput: Up to 230.4 kbps per port.
- Network Throughput: 10/100 Mbps auto-negotiation.
- Latency: Dependent on network conditions; optimized via TPORT driver’s TCP delay parameter.
- Concurrent Connections: Each serial port can handle one TCP/UDP session; multiple ports can operate independently.
- Reliability: Built-in watchdog and heartbeat mechanisms ensure stable TCP connections.
- Efficiency: Auto Data Direction Control minimizes RS485 turnaround delay.
- Limitations:
- TCP latency may affect time-sensitive applications.
- TPORT driver supports single-PC dedicated access; RPORT driver allows multi-PC sharing.
- Network disconnection may require reconnection or timeout handling in application software.

---

8. Standards & Compliance

- Network Standards: IEEE 802.3 10/100Base-TX Ethernet
- Serial Standards: EIA/TIA RS232, RS422, RS485
- Protocol Support: TCP/IP, UDP/IP, Telnet, RFC2217
- Operating System Compatibility: Windows NT/2000/XP/Vista/7/8/10, Linux, SCO UNIX
- Safety & EMC: Designed for industrial environments; compliant with CE/FCC Class A (typical for Rayon products)
- Firmware Upgrade Protocol: TFTP (Trivial File Transfer Protocol)

---

9. Additional Information

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

Support & Maintenance:
- Technical support via email (rayon@ms1.hinet.net).
- Firmware updates and driver downloads available from Rayon’s website.
- RMA (Return Material Authorization) required for repairs; contact Rayon Service Center for RMA number and return instructions.

Maintenance Recommendations:
- Use only approved 5VDC power adapters.
- Maintain clean, dry environment within specified temperature/humidity range.
- Periodically check firmware version and update as needed.
- Use “Reset Default” option in web interface to restore factory settings if configuration issues occur.

Related Models in the APORT/IPORT Series:
- APORT200: IP to 2×RS232 converter
- APORT020: IP to 2×ground-isolated RS232 converter
- APORT101: IP to 1×RS232 + 1×RS422/485 converter
- APORT400: IP to 4×RS232 converter
- APORT040: IP to 4×ground-isolated RS232 converter
- APORT800: IP to 8×RS232 converter
- APORT080: IP to 8×ground-isolated RS232 converter
- IPORT138 / IPORT138I: IP to 8×RS422/485 (isolated/non-isolated)
- IPORT114: IP to 4×RS232/RS422/RS485 converter

---

Summary

The Rayon IPORT118 is a robust, Linux-based IP-to-serial device server engineered for industrial and commercial applications requiring reliable multi-port serial communication over Ethernet. With eight configurable RS232/RS422/RS485 ports, comprehensive driver support, and flexible configuration interfaces, it bridges traditional serial equipment with modern IP networks. Its embedded RISC architecture, web-based management, and cross-platform compatibility make it ideal for automation, SCADA, and remote monitoring systems. The IPORT118 exemplifies Rayon’s commitment to providing scalable, high-performance serial networking solutions for diverse industrial environments.