1. Product Overview

Product Name: APort100P
Model: APORT100P
Series: APORT Series – IP to Serial Port Converters
Article Number: APort100P
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 APORT100P is a compact, Linux-based IP-to-Serial converter designed to bridge Ethernet networks with legacy RS232 serial devices. It provides one IP-accessible RS232 port and one local RS232 pass-through port, enabling both remote and local control of serial equipment. The device is part of Rayon’s APORT series, which includes models supporting various combinations of RS232, RS422, and RS485 interfaces.

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2. Key Features

- Dual RS232 Ports: One IP-accessible RS232 port (Serial Port 1) and one local pass-through RS232 port (Serial Port 2).
- Pass-Through Functionality: Data received from Serial Port 1 is transmitted to both Serial Port 2 and the remote IP virtual COM port, enabling simultaneous local and remote monitoring.
- High-Performance CPU: 32-bit 100 MHz MIPS RISC processor for efficient data handling and low latency.
- Memory Resources: 16 MB Flash ROM and 16 MB SDRAM for firmware and runtime operations.
- Network Interface: Auto-detecting 10/100 Mbps Ethernet (100Base-T) with RJ45 connector.
- Serial Communication Speed: Supports baud rates up to 230,400 bps.
- Operating Modes: TCP Server/Client, UDP Send/Receive, and Real TTY modes for flexible integration.
- Cross-Platform Driver Support:
- Windows NT/2000/XP/Vista/7/8/10 virtual COM drivers
- Linux raw TTY driver
- SCO UNIX real TTY driver
- Web and Telnet Configuration: Built-in web server and Telnet interface for configuration and monitoring.
- Local Console Access: Console port shared with Serial Port 1 for direct setup and diagnostics.
- Compact Design: Small form factor suitable for control panels and embedded systems.
- Industrial Reliability: Designed for continuous operation in automation and control environments.
- MODBUS Compatibility: Suitable for MODBUS-based HMI and control systems.
- Power Efficiency: Operates on 5 V DC at 1.2 A.

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3. Technical Specifications

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

Network Interface:
- Type: 10/100 Mbps Ethernet (100Base-T)
- Connector: RJ45
- Protocols: TCP/IP, UDP/IP

Serial Interface:
- Type: RS232
- Connector: DB9 male (x2)
- Port Count: 2
- Baud Rate: Up to 230,400 bps
- Data Bits: 5, 6, 7, or 8
- Stop Bits: 1 or 2
- Parity: None, Even, Odd
- Flow Control: Hardware/Software selectable
- Console Port: Shared with Serial Port 1

Power Requirements:
- Input Voltage: 5 V DC
- Current Consumption: 1,200 mA

Physical Characteristics:
- Dimensions: 92 mm × 118 mm × 27 mm
- Material: Industrial-grade Rayon enclosure
- Weight: Approx. 250 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 APORT100P functions as a network-enabled serial device server, converting serial data streams to IP packets and vice versa. It allows remote access to serial devices over Ethernet networks, effectively extending serial communication beyond physical cable limits.

Operational Logic:
- Serial Port 1 (Master Port): Acts as the primary interface for IP access. Data from this port is transmitted to both the remote virtual COM port and the local Serial Port 2.
- Serial Port 2 (Pass-Through Port): Provides local access to the same data stream, allowing simultaneous local monitoring or control.
- Data Flow:
- Data from Serial Port 1 → Sent to Serial Port 2 and remote IP port.
- Data from Serial Port 2 → Sent only to Serial Port 1.
- Data from remote IP port → Sent only to Serial Port 1.

Use Cases:
- Remote monitoring and control of RS232-based industrial equipment.
- Integration of legacy serial devices into modern Ethernet networks.
- HMI and MODBUS communication bridging.
- SCADA systems requiring remote serial connectivity.
- Serial device sharing between local and remote operators.

Compatibility:
- Works with Windows, Linux, and UNIX systems.
- Supports both virtual COM and real TTY interfaces.
- Compatible with MODBUS and other serial communication protocols.

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5. Components & Accessories

Included Items:
- APORT100P converter unit
- UP110 or UP220 5 V DC power adaptor
- User manual and software CD (includes drivers and utilities)

Optional Accessories:
- Console cable (for setup via Serial Port 1)
- Ethernet cable (RJ45)
- Mounting brackets or DIN-rail kit (optional)

Connectors:
- Ethernet: RJ45 (10/100 Mbps auto-sensing)
- Serial: Two DB9 male connectors (RS232)
- Power: Barrel-type DC jack (5 V DC input)

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6. Installation & Setup

Requirements:
- 5 V DC regulated power supply (UP110/UP220 recommended)
- Ethernet connection to LAN or switch
- PC with web browser or Telnet client for configuration

Installation Steps:
1. Power Off: Ensure the device is disconnected from power.
2. Network Connection: Connect the RJ45 port to a network hub or switch.
3. Serial Connection: Attach RS232 cables to the DB9 connectors for the target devices.
4. Console Access (Optional): Connect a terminal to Serial Port 1 for console setup (115200 bps, 8N1).
5. Power On: Apply 5 V DC power; LEDs indicate network and power status.
6. Configuration:
- Access via web browser (default IP: 192.168.1.254, password: 11111).
- Configure IP address, subnet mask, and gateway.
- Set serial port parameters (baud rate, parity, stop bits).
- Select operating mode (TCP Server, TCP Client, UDP, or Real TTY).
7. Driver Installation:
- Install the appropriate virtual COM or TTY driver on the host system.
- Map the APORT100P’s IP and port number to a virtual COM port.

Mounting Options:
- Desktop placement or optional DIN-rail mounting.

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7. Performance & Capabilities

- Data Rate: Up to 230.4 kbps per serial port.
- Network Throughput: 10/100 Mbps auto-negotiation.
- Latency: Optimized for low-latency serial-to-IP conversion using 32-bit RISC architecture.
- Concurrent Access: Supports one remote IP connection and one local pass-through simultaneously.
- Reliability: Continuous operation supported by Linux-based firmware.
- Driver Modes:
- TPORT Mode: Persistent TCP connection for dedicated Windows systems.
- RPORT Mode: Dynamic connection for multi-user environments.
- Heartbeat Mechanism: TPORT driver sends periodic heartbeat packets to maintain connection integrity.
- Error Handling: Automatic reconnection on network failure; configurable TCP delay compensation.
- Limitations:
- Only one remote IP connection per serial port.
- Serial control signals (RTS/CTS, DTR/DSR) not transmitted in standard TCP mode unless using TPORT driver.

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8. Standards & Compliance

- Network Standards: IEEE 802.3 10/100 Base-T Ethernet
- Communication Protocols: TCP/IP, UDP/IP, RFC2217 (Telnet COM port control)
- Operating System Support:
- Windows NT/2000/XP/Vista/7/8/10
- Linux (raw TTY)
- SCO UNIX (real TTY)
- Firmware Platform: Embedded Linux OS
- Environmental Compliance: Designed for industrial environments (non-condensing humidity, moderate temperature range).
- Safety & Quality: Manufactured by Rayon Technology under ISO-compliant processes.

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9. Additional Information

Warranty:
- One-year limited warranty covering defects in materials and workmanship.
- Excludes damage from misuse, unauthorized servicing, or incorrect power supply.

Support & Maintenance:
- Technical support available via email (rayon@ms1.hinet.net).
- Firmware upgrades available through TFTP procedure (default upgrade IP: 192.168.1.254).
- Console and web interfaces provide diagnostic and reset functions.
- Replacement and repair services available under RMA procedure.

Firmware Upgrade Procedure (Summary):
1. Set DIP switch bit 2 to ON for firmware upgrade mode.
2. Connect via console terminal (115200 bps, 8N1).
3. Use TFTP client to upload new firmware image (e.g., aport100p_xxxxxx.hg).
4. Reboot device to apply update.

Maintenance Recommendations:
- Use only the supplied 5 V DC adaptor.
- Keep ventilation unobstructed.
- Periodically verify network connectivity using the built-in ping function.
- Backup configuration before firmware updates.

Related Models in APORT Series:
- APORT200: Ethernet to 2 × RS232 ports
- APORT020: Ethernet to 2 × Ground-Isolated RS232 ports
- APORT101: Ethernet to 1 × RS232 + 1 × RS422/485 port
- APORT400: Ethernet to 4 × RS232 ports
- APORT040: Ethernet to 4 × Ground-Isolated RS232 ports
- APORT202: Ethernet to 2 × RS232 + 2 × RS422/485 ports
- APORT800: Ethernet to 8 × RS232 ports

Driver Utilities:
- aport_ap.exe: Configure APORT virtual COM ports (APORT mode).
- tport_ap.exe: Configure TPORT virtual COM ports (TPORT mode).
- aport_search.exe / tport_search.exe: Discover APORT devices on LAN.
- ainstall.exe / tinstall.exe: Automated driver installation utilities.

Troubleshooting Highlights:
- Verify 5 V DC power LED is ON.
- Use “ping” to confirm network reachability.
- Check serial port LEDs for TX/RX activity.
- Use console terminal for boot diagnostics.
- Reset to factory defaults via web interface if configuration is lost.

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Summary

The Rayon APORT100P IP-to-Serial Converter is a robust, high-performance solution for integrating RS232-based devices into Ethernet networks. With its dual-port design, embedded Linux system, and comprehensive driver support, it enables seamless remote and local serial communication. Its flexible configuration options, including TCP/UDP modes and virtual COM drivers, make it suitable for industrial automation, SCADA, and HMI applications. The APORT100P combines reliability, configurability, and cross-platform compatibility in a compact, efficient package designed for modern networked control environments.