USB 2.0-RS-422/485 (DB9 Male) Isolated Converter
The ULI-341 series is an industrial USB-to-serial converter that adds RS-422/485 ports to a USB port. It supports USB 2.0 (up to 12Mbps) and serial communication at up to 460.8kbps. With 2kV optical isolation, it protects devices from voltage surges and ground loops, supporting stable communication in factories and control panels. It features a high-retention USB Type B connector, designed to prevent cable disconnection even in vibrating environments. Its compact housing allows for easy inline installation. There are three models in the lineup, which can be selected based on application: - ULI-341TC with terminal block connection - ULI-341TCK with terminal block connection and fixed serial number - ULI-341DC with DB9 connection
![ULI-341DC_03--20240219112806[1].jpg](https://image.mono.ipros.com/public/product/image/245492/IPROS15166228250555074594.jpg?w=280&h=280)
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basic information
- Conversion: USB ⇔ RS-422/485 (bidirectional) - Communication distance: Up to 1.2km - Serial data rate: Up to 460.8kbps - USB specification: USB 2.0 (up to 12Mbps), Type B high retention connector - Isolation protection: 2kV optical isolation - LED indicators: TD, RD - Power supply method: Powered by USB port (TC: low power <100mA, TCK/DC: high power <500mA) - Operating temperature range: 0 to 70℃ (TC), -20 to 70℃ (TCK/DC) - RS-422/485 connection: Terminal block (TC/TCK), DB9 male (DC) - Functional differences: Fixed serial number support (TCK only) - Housing / installation: IP30 plastic, inline installation - Size: 88.3 × 42.7 × 20.2 mm - Weight: Approximately 91g - Driver: FTDI VCP (TC), Asix (TCK/DC) - Supported OS: Windows 7/8/10/11, Linux (Ubuntu) - Certification: CE, FCC, RoHS, WEEE
Price information
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Delivery Time
※The delivery time may vary depending on the quantity, so please feel free to contact us.
Applications/Examples of results
- Connection of industrial PCs and RS-485/RS-422 devices (PLC, measuring instruments) - Data collection from Modbus RTU devices via USB connection - High-reliability serial communication within control panels (all models) - Shared operation in field services (TCK: unified COM port with fixed serial number) - Connection with existing DB9 interface equipment (DC: DB9 connection type) - On-site implementation using terminal block wiring (TC/TCK: terminal block connection) - Stable operation in environments with vibrations (reduced cable disconnection with high-retention USB)
Line up（3）
| Model number | overview |
|---|---|
| ULI-341TC（BB-USOPTL4） | USB⇔RS-422/485, terminal block connection, 2kV isolation, standard model (FTDI VCP) |
| ULI-341TCK（BB-USOPTL4-LS） | USB⇔RS-422/485, terminal block connection, 2kV insulation, fixed serial number support (Asix) |
| ULI-341DC（BB-USO9ML4） | USB⇔RS-422/485, DB9 connection, 2kV isolation, standard model (Asix) |
catalog（3）
Download All Catalogs![[Case Studies Included] Serial/USB Communication Devices Product Guide](https://image.mono.ipros.com/public/catalog/image/245492/IPROS12540462012250341345.jpeg?w=120&h=170)
Company information
In 1983, Advantech (Advantech Co., Ltd.) was founded in Taiwan. For over 40 years, we have been developing high-quality and high-performance computers for industrial applications. As of 2024, we offer a lineup of over 3,000 various IoT devices. As the world's No. 1 manufacturer in the industrial computer market, with a presence in 95 cities across 26 countries, we aim to cultivate a prosperous future by solving social issues through AI × IoT platform services. *Source: OMDIA - No. 1 in global market share for industrial PCs, 42.5% (2023 edition)* In Japan, we established Advantech Co., Ltd. in 1997. In 2018, we formed a capital and business alliance with Omron Nogata Co., Ltd. to further expand sales and to quickly respond to market demands by offering design to production (DMS/ODM) services. By merging Taiwan's speed with the technological expertise we have cultivated over the years, we will establish a brand that meets the needs of our partners.
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