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- Multi-Protocol Serial Support:
Supports one selectable serial communication interface — RS232, RS422, or RS485 — through a single DB9 male connector.
- USB 2.0 Compliance:
Fully compliant with USB 2.0 specifications, ensuring high-speed data transfer and backward compatibility with USB 1.1.
- ASIX MCS7810 Chipset:
Utilizes the ASIX MCS7810 USB-to-serial controller for stable performance and efficient data handling.
- 512-Byte FIFO Buffer:
Each serial port is equipped with a 512-byte FIFO buffer for optimized data throughput and reduced latency.
- Auto Data Direction Control (RS485 Mode):
Automatically manages data direction in RS485 mode, simplifying half-duplex communication without external control signals.
- LED Indicators:
Independent LED indicators for power (PWR) and serial data transmission/reception (TXD/RXD) per channel.
- Bus-Powered Operation:
Draws power directly from the USB bus (5VDC, 100mA typical), eliminating external power adapters.
- Compact Metal Enclosure:
Durable metal housing (92 × 118 × 27 mm) provides electromagnetic shielding and mechanical protection.
- Flexible Configuration:
DIP switch selection allows users to toggle between RS232, RS422, and RS485 modes.
- Wide Environmental Tolerance:
Designed for industrial environments with operating temperatures from 0°C to 55°C and humidity up to 95% RH.
- Cost-Effective and Scalable:
Offers a balance between affordability and flexibility, suitable for single-port applications or as part of a larger serial communication system.
Supports one selectable serial communication interface — RS232, RS422, or RS485 — through a single DB9 male connector.
- USB 2.0 Compliance:
Fully compliant with USB 2.0 specifications, ensuring high-speed data transfer and backward compatibility with USB 1.1.
- ASIX MCS7810 Chipset:
Utilizes the ASIX MCS7810 USB-to-serial controller for stable performance and efficient data handling.
- 512-Byte FIFO Buffer:
Each serial port is equipped with a 512-byte FIFO buffer for optimized data throughput and reduced latency.
- Auto Data Direction Control (RS485 Mode):
Automatically manages data direction in RS485 mode, simplifying half-duplex communication without external control signals.
- LED Indicators:
Independent LED indicators for power (PWR) and serial data transmission/reception (TXD/RXD) per channel.
- Bus-Powered Operation:
Draws power directly from the USB bus (5VDC, 100mA typical), eliminating external power adapters.
- Compact Metal Enclosure:
Durable metal housing (92 × 118 × 27 mm) provides electromagnetic shielding and mechanical protection.
- Flexible Configuration:
DIP switch selection allows users to toggle between RS232, RS422, and RS485 modes.
- Wide Environmental Tolerance:
Designed for industrial environments with operating temperatures from 0°C to 55°C and humidity up to 95% RH.
- Cost-Effective and Scalable:
Offers a balance between affordability and flexibility, suitable for single-port applications or as part of a larger serial communication system.
Comprehensive Product Summary – UTS111 USB 2.0 to RS232/RS422/RS485 Converter
### 1. Product Overview
Product Name: UTS111 USB to Serial Port Converter
Model: UTS111
Series: UTS Flexible USB-to-Serial Converter Series
Article Number: UTS111
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
- Website: [www.rayontech.com.tw](http://www.rayontech.com.tw) / [www.rayontech.com](http://www.rayontech.com)
Product Description:
The Rayon UTS111 is a compact, metal-encased USB 2.0 to single-port RS232/RS422/RS485 converter designed for flexible serial communication applications. It provides a reliable interface between USB-enabled host systems and legacy serial devices, supporting multiple communication standards selectable via DIP switch. The device operates in USB bus-powered mode, eliminating the need for an external power supply, and is ideal for industrial, commercial, and embedded system integration.
### 2. Key Features
- Multi-Protocol Serial Support:
Supports one selectable serial communication interface — RS232, RS422, or RS485 — through a single DB9 male connector.
- USB 2.0 Compliance:
Fully compliant with USB 2.0 specifications, ensuring high-speed data transfer and backward compatibility with USB 1.1.
- ASIX MCS7810 Chipset:
Utilizes the ASIX MCS7810 USB-to-serial controller for stable performance and efficient data handling.
- 512-Byte FIFO Buffer:
Each serial port is equipped with a 512-byte FIFO buffer for optimized data throughput and reduced latency.
- Auto Data Direction Control (RS485 Mode):
Automatically manages data direction in RS485 mode, simplifying half-duplex communication without external control signals.
- LED Indicators:
Independent LED indicators for power (PWR) and serial data transmission/reception (TXD/RXD) per channel.
- Bus-Powered Operation:
Draws power directly from the USB bus (5VDC, 100mA typical), eliminating external power adapters.
- Compact Metal Enclosure:
Durable metal housing (92 × 118 × 27 mm) provides electromagnetic shielding and mechanical protection.
- Flexible Configuration:
DIP switch selection allows users to toggle between RS232, RS422, and RS485 modes.
- Wide Environmental Tolerance:
Designed for industrial environments with operating temperatures from 0°C to 55°C and humidity up to 95% RH.
- Cost-Effective and Scalable:
Offers a balance between affordability and flexibility, suitable for single-port applications or as part of a larger serial communication system.
### 3. Technical Specifications
USB Interface:
- Connector Type: USB Type-B female
- Standard: USB 2.0 (Full-Speed, 12 Mbps)
- Controller IC: ASIX MCS7810
- FIFO Buffer: 512 bytes per serial port
- Power Source: USB bus-powered (5VDC ±5%)
- Current Consumption: 100 mA typical @ 5VDC
Serial Interface (RS232/RS422/RS485):
- Connector Type: DB9 male
- Number of Ports: 1
- Selectable Modes: RS232, RS422, or RS485 (via DIP switch)
- Signal Pins: TX+, TX−, RX+, RX−, GND
- RS485 Mode: Auto Data Direction Control supported
- RS422/RS485 Wiring: Data+ and Data− signals can be assigned to TX+/TX− or RX+/RX− pairs
Indicators:
- PWR LED: Indicates USB power status
- Serial1 LED: Displays TXD/RXD activity
Power Requirements:
- Input Voltage: 5VDC (from USB bus)
- Power Consumption: 100 mA typical, 400 mA maximum
Physical Characteristics:
- Enclosure Material: Metal
- Dimensions: 92 mm (W) × 118 mm (L) × 27 mm (H)
- Weight: Approx. 200 g (typical, including enclosure)
Environmental Conditions:
- Operating Temperature: 0°C to 55°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10% to 95% RH (non-condensing)
- Storage Humidity: 5% to 95% RH (non-condensing)
### 4. Functionality
Operational Overview:
The UTS111 functions as a USB-to-serial communication bridge, enabling modern computers and embedded systems to interface with legacy serial devices. When connected to a USB port, the converter enumerates as a virtual COM port, allowing software applications to communicate with serial peripherals as if they were connected to a native serial interface.
Mode Selection:
A DIP switch on the device allows users to select between RS232, RS422, or RS485 operation modes.
- RS232 Mode: Standard point-to-point serial communication for devices such as modems, barcode scanners, and POS terminals.
- RS422 Mode: Differential signaling for long-distance, noise-resistant communication between two devices.
- RS485 Mode: Multi-drop communication supporting up to 32 nodes on a single bus, ideal for industrial control and automation systems.
Auto Data Direction Control:
In RS485 mode, the converter automatically manages the direction of data flow (transmit/receive) without requiring manual control signals, simplifying integration with half-duplex networks.
Use Cases and Applications:
- Industrial automation and control systems
- Building management systems (BMS)
- Point-of-sale (POS) terminals
- Data acquisition and monitoring systems
- Serial device networking and remote communication
- Laboratory instrumentation and test equipment
- Embedded system development and debugging
Compatibility:
- Compatible with Windows, Linux, and macOS operating systems (driver support dependent on MCS7810 chipset).
- Works with standard serial communication software and terminal emulators.
- Backward compatible with USB 1.1 hosts.
### 5. Components & Accessories
Included Components:
- UTS111 USB-to-Serial Converter Unit (metal enclosure)
- USB Type-A to Type-B cable (typically included)
- User manual or quick start guide
Optional Accessories:
- TB485 Terminal Block Kit: DB9 female to RS485 terminal block adapter for easy field wiring.
- Mounting brackets or DIN-rail adapters (optional, depending on installation requirements).
Connectors:
- USB Port: Type-B female connector for host connection
- Serial Port: DB9 male connector for RS232/RS422/RS485 interface
### 6. Installation & Setup
System Requirements:
- Host computer with available USB 2.0 or higher port
- Supported operating system with appropriate driver (MCS7810 driver package)
Installation Steps:
1. Connect the UTS111 to the host computer using a USB Type-A to Type-B cable.
2. Install the required driver software if not automatically recognized by the operating system.
3. Use the DIP switch to select the desired serial communication mode (RS232, RS422, or RS485).
4. Connect the serial device to the DB9 male connector.
5. Verify LED indicators:
- PWR LED should illuminate when powered.
- Serial1 LED flashes during data transmission or reception.
6. Configure the communication parameters (baud rate, parity, stop bits, etc.) in the host application.
Mounting Options:
- Desktop placement
- Wall or panel mounting using optional brackets
- DIN-rail mounting (with optional adapter)
Configuration Notes:
- Ensure correct DIP switch settings before connecting to the serial device.
- For RS485 networks, proper termination and biasing resistors may be required depending on cable length and node count.
### 7. Performance & Capabilities
Data Transfer Rate:
- Supports standard serial baud rates up to 921.6 kbps (depending on host and driver support).
FIFO Buffering:
- 512-byte transmit and receive buffers per port minimize data loss and improve throughput.
Latency and Efficiency:
- Low-latency communication suitable for real-time control and monitoring applications.
- Efficient USB 2.0 interface ensures stable data flow even under high-load conditions.
Power Efficiency:
- Operates entirely from USB bus power, consuming approximately 100 mA at 5VDC.
- No external power supply required, simplifying deployment.
Limitations:
- Single-port configuration (for multi-port applications, Rayon offers UTS112, UTS114, and UTS134 models).
- Non-isolated design (for ground isolation, use UTS111-I or other “-I” series models).
### 8. Standards & Compliance
Compliance and Certifications:
- USB 2.0 Specification Compliant
- RS232/RS422/RS485 Electrical Standards Compliant
- RoHS Compliant (lead-free manufacturing)
- CE and FCC Class B (typical for Rayon products; ensures electromagnetic compatibility)
Industry Standards Supported:
- EIA/TIA-232-F (RS232)
- EIA/TIA-422-B (RS422)
- EIA/TIA-485-A (RS485)
- USB Implementers Forum (USB-IF) compliance for USB 2.0 devices
Safety and Reliability:
- Metal enclosure provides EMI shielding and mechanical durability.
- Designed for continuous operation in industrial environments.
### 9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 1 year, subject to Rayon Technology’s policy).
Technical Support:
- Email and phone support available through Rayon Technology’s technical service team.
- Online resources and driver downloads available at [www.rayontech.com.tw](http://www.rayontech.com.tw).
Maintenance:
- No periodic maintenance required.
- Keep connectors clean and free from dust or corrosion.
- Avoid exposure to excessive moisture or vibration.
Firmware and Driver Updates:
- Driver updates provided by ASIX or Rayon Technology for compatibility with new operating systems.
- Firmware updates (if applicable) can be applied via USB interface.
Related and Upgrade Models:
- UTS111-I: Ground-isolated version of UTS111 for enhanced electrical safety.
- UTS112: Dual-port flexible RS232/RS422/RS485 converter.
- UTS134: Four-port RS422/RS485 converter (non-isolated).
- UTS134i: Four-port ground-isolated RS422/RS485 converter.
- UTS400: Four-port RS232 converter (cost-effective model).
- UTS485: Two RS232 + two RS422/RS485 ports (hybrid configuration).
Product Family Overview:
Rayon’s UTS series includes a wide range of USB-to-serial converters designed for different application needs:
- Standard Models: RS232-only (e.g., UTS400, UTS104P)
- Isolated Models: Ground-isolated RS232/RS422/RS485 (e.g., UTS101-I, UTS112-I)
- Flexible Models: Selectable RS232/RS422/RS485 (e.g., UTS111, UTS112, UTS114)
- Special Models: Mixed or hybrid configurations for dedicated applications (e.g., UTS485, UTS310-I)
### Summary
The Rayon UTS111 USB 2.0 to RS232/RS422/RS485 Converter is a versatile, cost-effective, and compact communication interface designed for industrial and commercial environments requiring flexible serial connectivity. Featuring the reliable ASIX MCS7810 controller, a 512-byte FIFO buffer, and automatic RS485 data direction control, it ensures stable and efficient data transmission across multiple serial standards. Its metal enclosure, LED indicators, and bus-powered design make it both durable and easy to deploy. With DIP switch configuration and broad compatibility across operating systems, the UTS111 is an ideal solution for engineers, system integrators, and OEMs seeking a dependable USB-to-serial communication bridge.
### 1. Product Overview
Product Name: UTS111 USB to Serial Port Converter
Model: UTS111
Series: UTS Flexible USB-to-Serial Converter Series
Article Number: UTS111
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
- Website: [www.rayontech.com.tw](http://www.rayontech.com.tw) / [www.rayontech.com](http://www.rayontech.com)
Product Description:
The Rayon UTS111 is a compact, metal-encased USB 2.0 to single-port RS232/RS422/RS485 converter designed for flexible serial communication applications. It provides a reliable interface between USB-enabled host systems and legacy serial devices, supporting multiple communication standards selectable via DIP switch. The device operates in USB bus-powered mode, eliminating the need for an external power supply, and is ideal for industrial, commercial, and embedded system integration.
### 2. Key Features
- Multi-Protocol Serial Support:
Supports one selectable serial communication interface — RS232, RS422, or RS485 — through a single DB9 male connector.
- USB 2.0 Compliance:
Fully compliant with USB 2.0 specifications, ensuring high-speed data transfer and backward compatibility with USB 1.1.
- ASIX MCS7810 Chipset:
Utilizes the ASIX MCS7810 USB-to-serial controller for stable performance and efficient data handling.
- 512-Byte FIFO Buffer:
Each serial port is equipped with a 512-byte FIFO buffer for optimized data throughput and reduced latency.
- Auto Data Direction Control (RS485 Mode):
Automatically manages data direction in RS485 mode, simplifying half-duplex communication without external control signals.
- LED Indicators:
Independent LED indicators for power (PWR) and serial data transmission/reception (TXD/RXD) per channel.
- Bus-Powered Operation:
Draws power directly from the USB bus (5VDC, 100mA typical), eliminating external power adapters.
- Compact Metal Enclosure:
Durable metal housing (92 × 118 × 27 mm) provides electromagnetic shielding and mechanical protection.
- Flexible Configuration:
DIP switch selection allows users to toggle between RS232, RS422, and RS485 modes.
- Wide Environmental Tolerance:
Designed for industrial environments with operating temperatures from 0°C to 55°C and humidity up to 95% RH.
- Cost-Effective and Scalable:
Offers a balance between affordability and flexibility, suitable for single-port applications or as part of a larger serial communication system.
### 3. Technical Specifications
USB Interface:
- Connector Type: USB Type-B female
- Standard: USB 2.0 (Full-Speed, 12 Mbps)
- Controller IC: ASIX MCS7810
- FIFO Buffer: 512 bytes per serial port
- Power Source: USB bus-powered (5VDC ±5%)
- Current Consumption: 100 mA typical @ 5VDC
Serial Interface (RS232/RS422/RS485):
- Connector Type: DB9 male
- Number of Ports: 1
- Selectable Modes: RS232, RS422, or RS485 (via DIP switch)
- Signal Pins: TX+, TX−, RX+, RX−, GND
- RS485 Mode: Auto Data Direction Control supported
- RS422/RS485 Wiring: Data+ and Data− signals can be assigned to TX+/TX− or RX+/RX− pairs
Indicators:
- PWR LED: Indicates USB power status
- Serial1 LED: Displays TXD/RXD activity
Power Requirements:
- Input Voltage: 5VDC (from USB bus)
- Power Consumption: 100 mA typical, 400 mA maximum
Physical Characteristics:
- Enclosure Material: Metal
- Dimensions: 92 mm (W) × 118 mm (L) × 27 mm (H)
- Weight: Approx. 200 g (typical, including enclosure)
Environmental Conditions:
- Operating Temperature: 0°C to 55°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10% to 95% RH (non-condensing)
- Storage Humidity: 5% to 95% RH (non-condensing)
### 4. Functionality
Operational Overview:
The UTS111 functions as a USB-to-serial communication bridge, enabling modern computers and embedded systems to interface with legacy serial devices. When connected to a USB port, the converter enumerates as a virtual COM port, allowing software applications to communicate with serial peripherals as if they were connected to a native serial interface.
Mode Selection:
A DIP switch on the device allows users to select between RS232, RS422, or RS485 operation modes.
- RS232 Mode: Standard point-to-point serial communication for devices such as modems, barcode scanners, and POS terminals.
- RS422 Mode: Differential signaling for long-distance, noise-resistant communication between two devices.
- RS485 Mode: Multi-drop communication supporting up to 32 nodes on a single bus, ideal for industrial control and automation systems.
Auto Data Direction Control:
In RS485 mode, the converter automatically manages the direction of data flow (transmit/receive) without requiring manual control signals, simplifying integration with half-duplex networks.
Use Cases and Applications:
- Industrial automation and control systems
- Building management systems (BMS)
- Point-of-sale (POS) terminals
- Data acquisition and monitoring systems
- Serial device networking and remote communication
- Laboratory instrumentation and test equipment
- Embedded system development and debugging
Compatibility:
- Compatible with Windows, Linux, and macOS operating systems (driver support dependent on MCS7810 chipset).
- Works with standard serial communication software and terminal emulators.
- Backward compatible with USB 1.1 hosts.
### 5. Components & Accessories
Included Components:
- UTS111 USB-to-Serial Converter Unit (metal enclosure)
- USB Type-A to Type-B cable (typically included)
- User manual or quick start guide
Optional Accessories:
- TB485 Terminal Block Kit: DB9 female to RS485 terminal block adapter for easy field wiring.
- Mounting brackets or DIN-rail adapters (optional, depending on installation requirements).
Connectors:
- USB Port: Type-B female connector for host connection
- Serial Port: DB9 male connector for RS232/RS422/RS485 interface
### 6. Installation & Setup
System Requirements:
- Host computer with available USB 2.0 or higher port
- Supported operating system with appropriate driver (MCS7810 driver package)
Installation Steps:
1. Connect the UTS111 to the host computer using a USB Type-A to Type-B cable.
2. Install the required driver software if not automatically recognized by the operating system.
3. Use the DIP switch to select the desired serial communication mode (RS232, RS422, or RS485).
4. Connect the serial device to the DB9 male connector.
5. Verify LED indicators:
- PWR LED should illuminate when powered.
- Serial1 LED flashes during data transmission or reception.
6. Configure the communication parameters (baud rate, parity, stop bits, etc.) in the host application.
Mounting Options:
- Desktop placement
- Wall or panel mounting using optional brackets
- DIN-rail mounting (with optional adapter)
Configuration Notes:
- Ensure correct DIP switch settings before connecting to the serial device.
- For RS485 networks, proper termination and biasing resistors may be required depending on cable length and node count.
### 7. Performance & Capabilities
Data Transfer Rate:
- Supports standard serial baud rates up to 921.6 kbps (depending on host and driver support).
FIFO Buffering:
- 512-byte transmit and receive buffers per port minimize data loss and improve throughput.
Latency and Efficiency:
- Low-latency communication suitable for real-time control and monitoring applications.
- Efficient USB 2.0 interface ensures stable data flow even under high-load conditions.
Power Efficiency:
- Operates entirely from USB bus power, consuming approximately 100 mA at 5VDC.
- No external power supply required, simplifying deployment.
Limitations:
- Single-port configuration (for multi-port applications, Rayon offers UTS112, UTS114, and UTS134 models).
- Non-isolated design (for ground isolation, use UTS111-I or other “-I” series models).
### 8. Standards & Compliance
Compliance and Certifications:
- USB 2.0 Specification Compliant
- RS232/RS422/RS485 Electrical Standards Compliant
- RoHS Compliant (lead-free manufacturing)
- CE and FCC Class B (typical for Rayon products; ensures electromagnetic compatibility)
Industry Standards Supported:
- EIA/TIA-232-F (RS232)
- EIA/TIA-422-B (RS422)
- EIA/TIA-485-A (RS485)
- USB Implementers Forum (USB-IF) compliance for USB 2.0 devices
Safety and Reliability:
- Metal enclosure provides EMI shielding and mechanical durability.
- Designed for continuous operation in industrial environments.
### 9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 1 year, subject to Rayon Technology’s policy).
Technical Support:
- Email and phone support available through Rayon Technology’s technical service team.
- Online resources and driver downloads available at [www.rayontech.com.tw](http://www.rayontech.com.tw).
Maintenance:
- No periodic maintenance required.
- Keep connectors clean and free from dust or corrosion.
- Avoid exposure to excessive moisture or vibration.
Firmware and Driver Updates:
- Driver updates provided by ASIX or Rayon Technology for compatibility with new operating systems.
- Firmware updates (if applicable) can be applied via USB interface.
Related and Upgrade Models:
- UTS111-I: Ground-isolated version of UTS111 for enhanced electrical safety.
- UTS112: Dual-port flexible RS232/RS422/RS485 converter.
- UTS134: Four-port RS422/RS485 converter (non-isolated).
- UTS134i: Four-port ground-isolated RS422/RS485 converter.
- UTS400: Four-port RS232 converter (cost-effective model).
- UTS485: Two RS232 + two RS422/RS485 ports (hybrid configuration).
Product Family Overview:
Rayon’s UTS series includes a wide range of USB-to-serial converters designed for different application needs:
- Standard Models: RS232-only (e.g., UTS400, UTS104P)
- Isolated Models: Ground-isolated RS232/RS422/RS485 (e.g., UTS101-I, UTS112-I)
- Flexible Models: Selectable RS232/RS422/RS485 (e.g., UTS111, UTS112, UTS114)
- Special Models: Mixed or hybrid configurations for dedicated applications (e.g., UTS485, UTS310-I)
### Summary
The Rayon UTS111 USB 2.0 to RS232/RS422/RS485 Converter is a versatile, cost-effective, and compact communication interface designed for industrial and commercial environments requiring flexible serial connectivity. Featuring the reliable ASIX MCS7810 controller, a 512-byte FIFO buffer, and automatic RS485 data direction control, it ensures stable and efficient data transmission across multiple serial standards. Its metal enclosure, LED indicators, and bus-powered design make it both durable and easy to deploy. With DIP switch configuration and broad compatibility across operating systems, the UTS111 is an ideal solution for engineers, system integrators, and OEMs seeking a dependable USB-to-serial communication bridge.
-
UTS111_Catalog_en.pdf
PDF Catalog
-
AP_Note_iSerial.pdf
Manual
- TB485 - DB9 Female to RS485 terminal screw block kit
