Comprehensive Product Summary – APort040 IP Device Server (TX to Isolated 4×RS232)

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### 1. Product Overview

Product Name: APort040
Model: APort040
Series: APORT Series – IP to Serial Port Converters
Article Number: APort040
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
- Web: [www.rayontech.com.tw](http://www.rayontech.com.tw)

Product Description:
The APort040 is a high-performance IP device server designed to convert Ethernet-based TCP/IP or UDP/IP communication into four isolated RS232 serial interfaces. It enables remote access, control, and monitoring of serial devices over a standard 10/100 Mbps Ethernet network. Built on a 32-bit 100 MHz MIPS RISC architecture with embedded Linux, the APort040 provides reliable, ground-isolated serial communication for industrial and automation environments requiring robust network-to-serial connectivity.

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### 2. Key Features

- Four Ground-Isolated RS232 Ports:
Each port is electrically isolated to prevent ground loops and protect connected devices from electrical interference.

- 10/100 Mbps Auto-Detecting Ethernet Interface:
Supports both 10Base-T and 100Base-TX Ethernet standards via RJ45 connector with automatic speed detection.

- High-Performance Embedded Processor:
32-bit 100 MHz MIPS RISC CPU ensures efficient data handling and low-latency serial-to-IP conversion.

- Embedded Linux System:
Provides a stable, multitasking environment for network and serial communication management.

- Flexible Communication Modes:
Supports TCP Server, TCP Client, UDP Send/Receive, and UDP Multi-Serial modes for diverse networking applications.

- Cross-Platform Driver Support:
- Windows NT/2000/XP/Vista/7/8/10 Virtual COM driver
- Linux raw TTY driver
- SCO UNIX real TTY driver

- Web, Telnet, and Console Configuration:
Device parameters can be configured via web browser, Telnet session, or serial console interface.

- Ground Isolation:
Each RS232 port is galvanically isolated from the system ground, enhancing reliability in noisy industrial environments.

- Compact and Durable Design:
Housed in a robust enclosure measuring 205 × 135 × 29 mm, suitable for desktop or panel mounting.

- Firmware Upgradeable:
Supports TFTP-based firmware updates for feature enhancements and maintenance.

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### 3. Technical Specifications

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

Serial Interface:
- Type: Ground-isolated RS232
- Connector: DB9 male (×4)
- Port Count: 4
- Baud Rate: Up to 230,400 bps
- Console Port: Shared with Serial Port 1
- Signal Lines: TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI, GND (isolated)

Ethernet Interface:
- Standard: 10/100 Mbps Ethernet (IEEE 802.3)
- Connector: RJ45
- Auto-negotiation: Supported
- Protocols: TCP/IP, UDP/IP

Power Requirements:
- Input Voltage: 5 VDC
- Current Consumption: 1200 mA
- Power Adapter: UP110/UP220 (regulated 5 VDC output)

Physical Characteristics:
- Dimensions: 205 × 135 × 29 mm (W × D × H)
- Weight: Approx. 0.6 kg (typical)
- Material: Industrial-grade metal enclosure

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

Operational Concept:
The APort040 bridges Ethernet networks and serial devices by encapsulating serial data into TCP or UDP packets. It can operate as a TCP server, TCP client, or UDP node, allowing remote systems to communicate with serial equipment as if directly connected.

Supported Modes:
1. TCP Server Mode:
The APort040 listens for incoming TCP connections on assigned port numbers. Ideal for remote terminal or SCADA systems connecting to serial devices.
2. TCP Client Mode:
The device initiates a connection to a predefined server IP and port, suitable for data acquisition systems pushing data to a central host.
3. UDP Send/Receive Mode:
Enables broadcast or unicast communication to up to four remote hosts simultaneously.
4. UDP Multi-Serial Mode:
Allows multiple serial ports to share the same UDP port number for synchronized data distribution.
5. Real TTY Modes:
- COM Real TTY Mode: UDP-based virtual COM communication for Windows and SCO UNIX.
- GVMODEM Real TTY Mode: TCP-based fixed TTY communication for Linux/UNIX systems.

Use Cases:
- Industrial automation and control systems
- Remote monitoring of PLCs, sensors, and meters
- POS and kiosk systems requiring networked serial access
- SCADA and telemetry applications
- Serial device networking in manufacturing or laboratory environments

Compatibility:
- Windows (NT/2000/XP/Vista/7/8/10)
- Linux (raw TTY driver)
- SCO UNIX (real TTY driver)
- Compatible with standard serial communication software via virtual COM mapping

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### 5. Components & Accessories

Included Items:
- APort040 main unit
- UP110/UP220 5VDC power adapter
- 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:
- 4 × DB9 male (RS232 ports)
- 1 × RJ45 (Ethernet)
- Power jack (5VDC input)

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### 6. Installation & Setup

Hardware Installation:
1. Connect the APort040 to a network hub or switch using a standard Ethernet cable.
2. Attach serial cables between the APort040’s DB9 connectors and target RS232 devices.
3. Connect the 5VDC power adapter (UP110/UP220).
4. Observe LED indicators for power and network link status.

DIP Switch Configuration:
- Bit 1: Console port enable (ON = console mode, OFF = normal serial port 1)
- Bit 2: Firmware upgrade mode (ON = upgrade, OFF = normal operation)
- Bits 3–4: Reserved for RS422/RS485 configuration (not applicable to APort040 RS232 model)

Software Configuration:
- Access via Web browser (default IP: 192.168.1.254, password: 11111)
- Configure IP address (static recommended), subnet mask, and gateway
- Assign operating mode and TCP/UDP port numbers per serial channel
- Save and reboot to apply settings

Driver Installation (Windows):
- Use “aport_ap.exe” or “tport_ap.exe” utilities to map virtual COM ports
- Install APORT or TPORT drivers depending on mode (COM Real TTY or TCP Server)
- Supported OS: Windows NT through Windows 10
- Administrator privileges required for Windows 7 and later

Driver Installation (Linux/UNIX):
- Extract and configure “gvmodem_linux.tar” or “rtty100.tar” packages
- Edit configuration files to map pseudo-TTY devices to APort IP and port numbers
- Start daemon processes (gtstcpd or nasd) for persistent TTY mapping

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### 7. Performance & Capabilities

- Serial Data Rate: Up to 230.4 kbps per port
- Network Throughput: 10/100 Mbps auto-sensing
- Latency: Dependent on network conditions; optimized via TCP delay parameter
- Concurrent Connections: Up to four serial ports active simultaneously
- Protocol Support: TCP/IP, UDP/IP, RFC2217 (Telnet COM port control)
- Buffering: Internal buffering managed by embedded Linux kernel
- Reliability: Heartbeat mechanism in TPORT driver detects disconnections and auto-reconnects within 10 seconds
- Efficiency: Minimal CPU overhead due to dedicated RISC processor
- Limitations:
- Console port shares Serial Port 1
- Only one PC can occupy a serial port in TPORT mode
- Network latency may affect timing-sensitive applications

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### 8. Standards & Compliance

- Ethernet Standards: IEEE 802.3 (10Base-T/100Base-TX)
- Serial Standards: EIA/TIA RS232
- Network Protocols: TCP/IP, UDP/IP, DHCP (optional), Telnet, TFTP
- RFC Compliance: RFC2217 (Telnet COM Port Control Option)
- Operating System Compatibility: Windows, Linux, UNIX, SCO OpenServer
- Safety & Isolation: Ground-isolated RS232 ports for electrical protection
- Firmware Upgrade Protocol: TFTP (Trivial File Transfer Protocol)
- Environmental Compliance: Designed for industrial temperature and humidity ranges

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### 9. Additional Information

Firmware Upgrade Procedure:
- Set DIP switch bit 2 to ON to enter firmware upgrade mode.
- Connect via console terminal (115200 bps, 8N1).
- Use TFTP client to upload new firmware (default IP: 192.168.1.254).
- Verify firmware version via web interface or console after reboot.

Maintenance & Troubleshooting:
- Verify power LED and network link indicators.
- Use “ping” to confirm network connectivity.
- Check serial port LEDs for TX/RX activity.
- Use console terminal or web interface for diagnostics.
- Recommended terminal emulator: TeraTerm (VT100 mode).

Warranty & Support:
- Warranty Period: 1 year limited warranty covering defects in materials and workmanship.
- Exclusions: Damage from misuse, electrical surges, unauthorized servicing, or non-compliance with specifications.
- Repair Policy:
- RMA (Return Material Authorization) required before return.
- Warranty repairs free of charge; out-of-warranty repairs subject to flat-rate fees.
- Contact RAYON Service Center for RMA number and return instructions.

Software Utilities:
- aport_ap.exe / tport_ap.exe: Configure virtual COM ports and search devices.
- aport_search.exe / tport_search.exe: Discover APORT devices across subnets.
- wftp8.exe: Windows TFTP utility for firmware updates.

Related Models in APORT Series:
- APORT200: 2 × RS232 ports
- APORT020: 2 × isolated RS232 ports
- APORT101: 1 × RS232 + 1 × isolated RS422/485
- APORT400: 4 × RS232 ports
- APORT202: 2 × RS232 + 2 × isolated RS422/485
- APORT022: 2 × isolated RS232 + 2 × isolated RS422/485

Model Naming Convention:
APORTxyz
- x = number of RS232 ports
- y = number of isolated RS232 ports
- z = number of isolated RS422/485 ports

Example:
APORT040 → 0 RS232 + 4 isolated RS232 + 0 RS422/485

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### Summary

The RAYON APort040 IP Device Server is a robust, industrial-grade Ethernet-to-serial converter that provides four ground-isolated RS232 ports accessible over TCP/IP or UDP/IP networks. With its 32-bit RISC processor, embedded Linux OS, and comprehensive driver support across Windows, Linux, and UNIX platforms, it delivers reliable and flexible serial connectivity for automation, control, and data acquisition systems. Its isolation design ensures electrical safety and signal integrity, while its web-based configuration and firmware upgrade capabilities simplify deployment and maintenance. The APort040 stands as a versatile solution for integrating legacy serial devices into modern IP-based infrastructures.