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APort211
IP Device Server TX to 2*RS232 Isolated 1*RS232 1*RS485/422
217,00 EUR
including VAT 258.23 EUR
- Multi-Interface Serial Connectivity:
Provides 2× RS232, 1× isolated RS232, and 1× isolated RS422/485 ports via DB9 male connectors.
- High-Performance Embedded System:
Powered by a 32-bit 100 MHz MIPS RISC CPU with 16 MB Flash ROM and 16 MB SDRAM, ensuring fast data handling and stable operation.
- Ethernet Networking:
Auto-detecting 10/100 Mbps Ethernet interface (100Base-T) with RJ45 connector for flexible LAN integration.
- Multiple Operating Modes:
Supports TCP Server, TCP Client, UDP Send/Receive, UDP Multi-Serial, and Real TTY modes for diverse networking environments.
- Cross-Platform Driver Support:
- Windows NT/2000/XP/Vista/7 Virtual COM driver (APORT or TPORT mode)
- Linux raw TTY (GVMODEM) driver
- SCO UNIX real TTY (RTTY) driver
- Ground Isolation:
Electrical isolation on RS232 and RS422/485 ports to prevent ground loops and protect connected devices.
- Web, Telnet, and Console Configuration:
Built-in web server, Telnet interface, and console port for flexible configuration and monitoring.
- Firmware Upgradeable:
Supports TFTP-based firmware updates via DIP switch configuration.
- Compact Industrial Design:
Rugged metal enclosure (205 × 135 × 29 mm) suitable for control cabinets and industrial environments.
- Power Efficiency:
Operates on 5 V DC at 1.2 A (6 W typical consumption).
Provides 2× RS232, 1× isolated RS232, and 1× isolated RS422/485 ports via DB9 male connectors.
- High-Performance Embedded System:
Powered by a 32-bit 100 MHz MIPS RISC CPU with 16 MB Flash ROM and 16 MB SDRAM, ensuring fast data handling and stable operation.
- Ethernet Networking:
Auto-detecting 10/100 Mbps Ethernet interface (100Base-T) with RJ45 connector for flexible LAN integration.
- Multiple Operating Modes:
Supports TCP Server, TCP Client, UDP Send/Receive, UDP Multi-Serial, and Real TTY modes for diverse networking environments.
- Cross-Platform Driver Support:
- Windows NT/2000/XP/Vista/7 Virtual COM driver (APORT or TPORT mode)
- Linux raw TTY (GVMODEM) driver
- SCO UNIX real TTY (RTTY) driver
- Ground Isolation:
Electrical isolation on RS232 and RS422/485 ports to prevent ground loops and protect connected devices.
- Web, Telnet, and Console Configuration:
Built-in web server, Telnet interface, and console port for flexible configuration and monitoring.
- Firmware Upgradeable:
Supports TFTP-based firmware updates via DIP switch configuration.
- Compact Industrial Design:
Rugged metal enclosure (205 × 135 × 29 mm) suitable for control cabinets and industrial environments.
- Power Efficiency:
Operates on 5 V DC at 1.2 A (6 W typical consumption).
1. Product Overview
Product Name: APort211
Model: APort211
Series: APORT400 Series – IP to Serial Port Converter
Article Number: APort211
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
Websites: [www.rayontech.com](http://www.rayontech.com), [www.computex.com.tw/rayon](http://www.computex.com.tw/rayon)
The APort211 is a high-performance IP device server designed to convert Ethernet-based TCP/IP or UDP/IP communication into multiple serial interfaces. It belongs to Rayon’s APORT400 series, which provides flexible combinations of RS232, isolated RS232, and isolated RS422/485 ports. The APort211 model specifically offers two standard RS232 ports, one isolated RS232 port, and one isolated RS422/485 port, making it ideal for industrial automation, remote device management, and serial-over-IP applications.
2. Key Features
- Multi-Interface Serial Connectivity:
Provides 2× RS232, 1× isolated RS232, and 1× isolated RS422/485 ports via DB9 male connectors.
- High-Performance Embedded System:
Powered by a 32-bit 100 MHz MIPS RISC CPU with 16 MB Flash ROM and 16 MB SDRAM, ensuring fast data handling and stable operation.
- Ethernet Networking:
Auto-detecting 10/100 Mbps Ethernet interface (100Base-T) with RJ45 connector for flexible LAN integration.
- Multiple Operating Modes:
Supports TCP Server, TCP Client, UDP Send/Receive, UDP Multi-Serial, and Real TTY modes for diverse networking environments.
- Cross-Platform Driver Support:
- Windows NT/2000/XP/Vista/7 Virtual COM driver (APORT or TPORT mode)
- Linux raw TTY (GVMODEM) driver
- SCO UNIX real TTY (RTTY) driver
- Ground Isolation:
Electrical isolation on RS232 and RS422/485 ports to prevent ground loops and protect connected devices.
- Web, Telnet, and Console Configuration:
Built-in web server, Telnet interface, and console port for flexible configuration and monitoring.
- Firmware Upgradeable:
Supports TFTP-based firmware updates via DIP switch configuration.
- Compact Industrial Design:
Rugged metal enclosure (205 × 135 × 29 mm) suitable for control cabinets and industrial environments.
- Power Efficiency:
Operates on 5 V DC at 1.2 A (6 W typical consumption).
3. Technical Specifications
| Parameter | Specification |
|----------------|-------------------|
| CPU | 32-bit 100 MHz MIPS RISC |
| Memory | 16 MB Flash ROM, 16 MB SDRAM |
| Ethernet Interface | 10/100 Mbps auto-detecting, RJ45 connector |
| Serial Interfaces | 2× RS232, 1× isolated RS232, 1× isolated RS422/485 |
| Serial Connector Type | DB9 male |
| Serial Speed | Up to 230,400 bps |
| Isolation | Ground isolation on RS232 and RS422/485 ports |
| Power Supply | 5 V DC @ 1.2 A (via UP110/UP220 adapter) |
| Dimensions | 205 mm × 135 mm × 29 mm |
| Material | Metal enclosure (Rayon industrial design) |
| Operating Temperature | 5 °C – 40 °C |
| Storage Temperature | 0 °C – 65 °C |
| Operating Humidity | 10 % – 90 % RH (non-condensing) |
| Storage Humidity | 5 % – 90 % RH |
| Weight | Approx. 0.8 kg (typical) |
| Compliance | CE, FCC Class A (industrial) |
4. Functionality
The APort211 functions as an IP-to-Serial converter, bridging Ethernet networks with serial-based devices. It encapsulates serial data into TCP or UDP packets, enabling remote access and control of serial equipment over LAN or WAN.
Operating Modes:
- TCP Server Mode:
The APort211 listens for incoming TCP connections on assigned ports, allowing remote clients to connect and exchange serial data.
- TCP Client Mode:
Initiates connections to a predefined server IP and port, suitable for centralized data collection.
- UDP Mode:
Supports both send and receive modes, transmitting serial data to up to four remote hosts simultaneously.
- UDP Multi-Serial Mode:
Allows multiple serial ports to share the same UDP port number for broadcast-type applications.
- Real TTY Mode:
Provides direct serial device mapping for UNIX/Linux systems using GVMODEM or RTTY drivers.
Use Cases:
- Industrial automation and SCADA systems
- Remote monitoring of PLCs, sensors, and controllers
- POS and kiosk systems requiring serial-over-IP
- Data acquisition and logging systems
- Integration with MODBUS RTU/TCP networks
Compatibility:
- Windows NT/2000/XP/Vista/7 (Virtual COM via APORT or TPORT driver)
- Linux and UNIX (GVMODEM or RTTY driver)
- SCO OpenServer (real TTY driver)
5. Components & Accessories
Included Items:
- APort211 device server unit
- UP110 or UP220 5 V DC power adapter
- User manual and software CD (drivers, utilities, firmware tools)
Optional Accessories:
- Console cable (RS232)
- Ethernet cable (RJ45)
- DIN-rail or wall-mounting brackets
- Replacement power adapter
Connectors:
- Ethernet: RJ45 (10/100 Mbps)
- Serial: DB9 male connectors (RS232/RS422/RS485)
- Power: DC barrel jack (5 V DC input)
6. Installation & Setup
Hardware Installation:
1. Connect the APort211 to a network hub or switch using a standard Ethernet cable.
2. Attach serial cables to the corresponding DB9 connectors for RS232 or RS422/485 devices.
3. Configure DIP switches:
- Bit 1: Console port enable (ON = console, OFF = normal serial)
- Bit 2: Firmware upgrade mode (ON = upgrade, OFF = normal)
- Bit 3: RS422/RS485 selection for port 3 (ON = RS422, OFF = RS485)
- Bit 4: RS422/RS485 selection for port 4 (ON = RS422, OFF = RS485)
4. Connect the 5 V DC power adapter and power on the device.
5. Verify LED indicators for power and LAN link status.
Software Configuration:
- Access via Web browser (default IP: 192.168.1.254, password: 11111)
- Configure IP address (static recommended), subnet mask, and gateway.
- Set each serial port’s mode (TCP/UDP/Real TTY) and parameters (baud rate, parity, stop bits).
- Save and reboot to apply settings.
Driver Installation (Windows):
- Use aport_ap.exe for APORT mode or tport_ap.exe for TPORT mode.
- Map virtual COM ports to APort211’s IP and serial port numbers.
- Install drivers via ainstall.exe or tinstall.exe utilities.
- Verify COM port availability in Device Manager.
Firmware Upgrade:
- Set DIP switch 2 = ON to enter upgrade mode.
- Connect via TFTP client to 192.168.1.254 and upload new firmware image.
- Power cycle and verify firmware version via web interface.
7. Performance & Capabilities
- Data Rate: Up to 230.4 kbps per serial port
- Network Throughput: 10/100 Mbps auto-negotiation
- Latency: Dependent on network conditions; optimized via TPORT driver heartbeat and TCP delay parameters
- Concurrent Connections: Multiple TCP/UDP sessions supported (one per serial port)
- Buffering: Internal FIFO buffers for efficient data handling
- Isolation: Ground isolation prevents electrical interference and signal degradation
- Reliability: Embedded Linux-based firmware ensures stable long-term operation
- Limitations:
- TCP latency may affect time-critical applications
- Only one active TCP connection per serial port in TPORT mode
- Requires consistent serial protocol settings between virtual COM and device
8. Standards & Compliance
- Network Protocols: TCP/IP, UDP/IP, DHCP (optional), RFC2217 (Telnet COM port control)
- Electrical Standards:
- RS232 (EIA/TIA-232-F)
- RS422/RS485 (EIA/TIA-422/485-A)
- Isolation: Ground isolation compliant with industrial EMC standards
- Software Standards:
- Windows COM port emulation
- UNIX/Linux TTY device mapping
- Certifications: CE, FCC Class A (industrial environment)
- Environmental Compliance: RoHS-compliant materials
9. Additional Information
Warranty:
- One-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 and driver downloads available from Rayon’s website.
- RMA (Return Material Authorization) required for repairs; contact Rayon for RMA number and return instructions.
Maintenance Recommendations:
- Use only approved 5 V DC adapters (UP110/UP220).
- Avoid exposure to extreme temperatures or humidity.
- Periodically check firmware version and update as needed.
- Use “ping” or built-in diagnostics to verify network connectivity.
Software Utilities:
- aport_ap.exe / tport_ap.exe: Configure virtual COM mappings.
- aport_search.exe / tport_search.exe: Discover APORT devices on LAN.
- wftp8.exe: Firmware upgrade utility.
- Teraterm: Recommended terminal emulator for console access.
Driver Modes Summary:
- APORT Mode: UDP-based virtual COM (low latency, single host).
- TPORT Mode: TCP-based virtual COM (reliable, supports control signals).
- RPORT Mode: Dynamic TCP connection for multi-host environments.
Example Model Comparison (APORT400 Series):
| Model | RS232 | Isolated RS232 | Isolated RS422/485 |
|------------|------------|--------------------|-------------------------|
| APORT400 | 4 | 0 | 0 |
| APORT040 | 0 | 4 | 0 |
| APORT031 | 0 | 3 | 1 |
| APORT022 | 0 | 2 | 2 |
| APORT301 | 3 | 0 | 1 |
| APORT202 | 2 | 0 | 2 |
| APORT211 | 2 | 1 | 1 |
Pin Assignments (DB9 Male):
| Pin | RS232 Signal | RS422/485 Signal |
|----------|------------------|----------------------|
| 1 | DCD (input) | Pull |
| 2 | RXD (input) | RXD+ |
| 3 | TXD (output) | TXD+ |
| 4 | DTR (output) | TXD– |
| 5 | GND | Isolated GND |
| 6 | DSR (input) | RXD– |
| 7 | RTS (output) | Pull+ |
| 8 | CTS (input) | — |
| 9 | RI (input) | — |
RS485 Mode Notes:
- Short pins 2 & 3 = DATA+
- Short pins 4 & 6 = DATA–
- Default 10 kΩ pull-up/pull-down resistors; optional 680 Ω by shorting pins 7 & 2 and 1 & 6.
Summary
The Rayon APort211 is a robust, Linux-based IP-to-serial device server engineered for industrial and commercial applications requiring reliable serial communication over Ethernet. With its combination of standard and isolated serial ports, flexible configuration modes, and comprehensive driver support across multiple operating systems, it provides a versatile solution for integrating legacy serial devices into modern IP networks. Its compact form factor, isolation protection, and firmware upgradeability make it a long-term, serviceable component in automation, monitoring, and control systems.
Product Name: APort211
Model: APort211
Series: APORT400 Series – IP to Serial Port Converter
Article Number: APort211
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
Websites: [www.rayontech.com](http://www.rayontech.com), [www.computex.com.tw/rayon](http://www.computex.com.tw/rayon)
The APort211 is a high-performance IP device server designed to convert Ethernet-based TCP/IP or UDP/IP communication into multiple serial interfaces. It belongs to Rayon’s APORT400 series, which provides flexible combinations of RS232, isolated RS232, and isolated RS422/485 ports. The APort211 model specifically offers two standard RS232 ports, one isolated RS232 port, and one isolated RS422/485 port, making it ideal for industrial automation, remote device management, and serial-over-IP applications.
2. Key Features
- Multi-Interface Serial Connectivity:
Provides 2× RS232, 1× isolated RS232, and 1× isolated RS422/485 ports via DB9 male connectors.
- High-Performance Embedded System:
Powered by a 32-bit 100 MHz MIPS RISC CPU with 16 MB Flash ROM and 16 MB SDRAM, ensuring fast data handling and stable operation.
- Ethernet Networking:
Auto-detecting 10/100 Mbps Ethernet interface (100Base-T) with RJ45 connector for flexible LAN integration.
- Multiple Operating Modes:
Supports TCP Server, TCP Client, UDP Send/Receive, UDP Multi-Serial, and Real TTY modes for diverse networking environments.
- Cross-Platform Driver Support:
- Windows NT/2000/XP/Vista/7 Virtual COM driver (APORT or TPORT mode)
- Linux raw TTY (GVMODEM) driver
- SCO UNIX real TTY (RTTY) driver
- Ground Isolation:
Electrical isolation on RS232 and RS422/485 ports to prevent ground loops and protect connected devices.
- Web, Telnet, and Console Configuration:
Built-in web server, Telnet interface, and console port for flexible configuration and monitoring.
- Firmware Upgradeable:
Supports TFTP-based firmware updates via DIP switch configuration.
- Compact Industrial Design:
Rugged metal enclosure (205 × 135 × 29 mm) suitable for control cabinets and industrial environments.
- Power Efficiency:
Operates on 5 V DC at 1.2 A (6 W typical consumption).
3. Technical Specifications
| Parameter | Specification |
|----------------|-------------------|
| CPU | 32-bit 100 MHz MIPS RISC |
| Memory | 16 MB Flash ROM, 16 MB SDRAM |
| Ethernet Interface | 10/100 Mbps auto-detecting, RJ45 connector |
| Serial Interfaces | 2× RS232, 1× isolated RS232, 1× isolated RS422/485 |
| Serial Connector Type | DB9 male |
| Serial Speed | Up to 230,400 bps |
| Isolation | Ground isolation on RS232 and RS422/485 ports |
| Power Supply | 5 V DC @ 1.2 A (via UP110/UP220 adapter) |
| Dimensions | 205 mm × 135 mm × 29 mm |
| Material | Metal enclosure (Rayon industrial design) |
| Operating Temperature | 5 °C – 40 °C |
| Storage Temperature | 0 °C – 65 °C |
| Operating Humidity | 10 % – 90 % RH (non-condensing) |
| Storage Humidity | 5 % – 90 % RH |
| Weight | Approx. 0.8 kg (typical) |
| Compliance | CE, FCC Class A (industrial) |
4. Functionality
The APort211 functions as an IP-to-Serial converter, bridging Ethernet networks with serial-based devices. It encapsulates serial data into TCP or UDP packets, enabling remote access and control of serial equipment over LAN or WAN.
Operating Modes:
- TCP Server Mode:
The APort211 listens for incoming TCP connections on assigned ports, allowing remote clients to connect and exchange serial data.
- TCP Client Mode:
Initiates connections to a predefined server IP and port, suitable for centralized data collection.
- UDP Mode:
Supports both send and receive modes, transmitting serial data to up to four remote hosts simultaneously.
- UDP Multi-Serial Mode:
Allows multiple serial ports to share the same UDP port number for broadcast-type applications.
- Real TTY Mode:
Provides direct serial device mapping for UNIX/Linux systems using GVMODEM or RTTY drivers.
Use Cases:
- Industrial automation and SCADA systems
- Remote monitoring of PLCs, sensors, and controllers
- POS and kiosk systems requiring serial-over-IP
- Data acquisition and logging systems
- Integration with MODBUS RTU/TCP networks
Compatibility:
- Windows NT/2000/XP/Vista/7 (Virtual COM via APORT or TPORT driver)
- Linux and UNIX (GVMODEM or RTTY driver)
- SCO OpenServer (real TTY driver)
5. Components & Accessories
Included Items:
- APort211 device server unit
- UP110 or UP220 5 V DC power adapter
- User manual and software CD (drivers, utilities, firmware tools)
Optional Accessories:
- Console cable (RS232)
- Ethernet cable (RJ45)
- DIN-rail or wall-mounting brackets
- Replacement power adapter
Connectors:
- Ethernet: RJ45 (10/100 Mbps)
- Serial: DB9 male connectors (RS232/RS422/RS485)
- Power: DC barrel jack (5 V DC input)
6. Installation & Setup
Hardware Installation:
1. Connect the APort211 to a network hub or switch using a standard Ethernet cable.
2. Attach serial cables to the corresponding DB9 connectors for RS232 or RS422/485 devices.
3. Configure DIP switches:
- Bit 1: Console port enable (ON = console, OFF = normal serial)
- Bit 2: Firmware upgrade mode (ON = upgrade, OFF = normal)
- Bit 3: RS422/RS485 selection for port 3 (ON = RS422, OFF = RS485)
- Bit 4: RS422/RS485 selection for port 4 (ON = RS422, OFF = RS485)
4. Connect the 5 V DC power adapter and power on the device.
5. Verify LED indicators for power and LAN link status.
Software Configuration:
- Access via Web browser (default IP: 192.168.1.254, password: 11111)
- Configure IP address (static recommended), subnet mask, and gateway.
- Set each serial port’s mode (TCP/UDP/Real TTY) and parameters (baud rate, parity, stop bits).
- Save and reboot to apply settings.
Driver Installation (Windows):
- Use aport_ap.exe for APORT mode or tport_ap.exe for TPORT mode.
- Map virtual COM ports to APort211’s IP and serial port numbers.
- Install drivers via ainstall.exe or tinstall.exe utilities.
- Verify COM port availability in Device Manager.
Firmware Upgrade:
- Set DIP switch 2 = ON to enter upgrade mode.
- Connect via TFTP client to 192.168.1.254 and upload new firmware image.
- Power cycle and verify firmware version via web interface.
7. Performance & Capabilities
- Data Rate: Up to 230.4 kbps per serial port
- Network Throughput: 10/100 Mbps auto-negotiation
- Latency: Dependent on network conditions; optimized via TPORT driver heartbeat and TCP delay parameters
- Concurrent Connections: Multiple TCP/UDP sessions supported (one per serial port)
- Buffering: Internal FIFO buffers for efficient data handling
- Isolation: Ground isolation prevents electrical interference and signal degradation
- Reliability: Embedded Linux-based firmware ensures stable long-term operation
- Limitations:
- TCP latency may affect time-critical applications
- Only one active TCP connection per serial port in TPORT mode
- Requires consistent serial protocol settings between virtual COM and device
8. Standards & Compliance
- Network Protocols: TCP/IP, UDP/IP, DHCP (optional), RFC2217 (Telnet COM port control)
- Electrical Standards:
- RS232 (EIA/TIA-232-F)
- RS422/RS485 (EIA/TIA-422/485-A)
- Isolation: Ground isolation compliant with industrial EMC standards
- Software Standards:
- Windows COM port emulation
- UNIX/Linux TTY device mapping
- Certifications: CE, FCC Class A (industrial environment)
- Environmental Compliance: RoHS-compliant materials
9. Additional Information
Warranty:
- One-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 and driver downloads available from Rayon’s website.
- RMA (Return Material Authorization) required for repairs; contact Rayon for RMA number and return instructions.
Maintenance Recommendations:
- Use only approved 5 V DC adapters (UP110/UP220).
- Avoid exposure to extreme temperatures or humidity.
- Periodically check firmware version and update as needed.
- Use “ping” or built-in diagnostics to verify network connectivity.
Software Utilities:
- aport_ap.exe / tport_ap.exe: Configure virtual COM mappings.
- aport_search.exe / tport_search.exe: Discover APORT devices on LAN.
- wftp8.exe: Firmware upgrade utility.
- Teraterm: Recommended terminal emulator for console access.
Driver Modes Summary:
- APORT Mode: UDP-based virtual COM (low latency, single host).
- TPORT Mode: TCP-based virtual COM (reliable, supports control signals).
- RPORT Mode: Dynamic TCP connection for multi-host environments.
Example Model Comparison (APORT400 Series):
| Model | RS232 | Isolated RS232 | Isolated RS422/485 |
|------------|------------|--------------------|-------------------------|
| APORT400 | 4 | 0 | 0 |
| APORT040 | 0 | 4 | 0 |
| APORT031 | 0 | 3 | 1 |
| APORT022 | 0 | 2 | 2 |
| APORT301 | 3 | 0 | 1 |
| APORT202 | 2 | 0 | 2 |
| APORT211 | 2 | 1 | 1 |
Pin Assignments (DB9 Male):
| Pin | RS232 Signal | RS422/485 Signal |
|----------|------------------|----------------------|
| 1 | DCD (input) | Pull |
| 2 | RXD (input) | RXD+ |
| 3 | TXD (output) | TXD+ |
| 4 | DTR (output) | TXD– |
| 5 | GND | Isolated GND |
| 6 | DSR (input) | RXD– |
| 7 | RTS (output) | Pull+ |
| 8 | CTS (input) | — |
| 9 | RI (input) | — |
RS485 Mode Notes:
- Short pins 2 & 3 = DATA+
- Short pins 4 & 6 = DATA–
- Default 10 kΩ pull-up/pull-down resistors; optional 680 Ω by shorting pins 7 & 2 and 1 & 6.
Summary
The Rayon APort211 is a robust, Linux-based IP-to-serial device server engineered for industrial and commercial applications requiring reliable serial communication over Ethernet. With its combination of standard and isolated serial ports, flexible configuration modes, and comprehensive driver support across multiple operating systems, it provides a versatile solution for integrating legacy serial devices into modern IP networks. Its compact form factor, isolation protection, and firmware upgradeability make it a long-term, serviceable component in automation, monitoring, and control systems.
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APORT400_Catalog.pdf
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APORT_manual.pdf
Manual
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TPORT driver feature.pdf
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