2-port + 3kV isolation! DIN rail compatible industrial USB ⇔ RS-422/485 converter
The ULI-342TC is an industrial USB-to-serial converter that adds two RS-422/485 ports to a USB port. It supports USB 2.0 (up to 480Mbps) and serial communication at speeds of up to 921.6kbps. With 3kV optical isolation, it provides electrical separation between the upstream PC and downstream devices, as well as between each port, protecting equipment from voltage surges and ground loops. Its robust design is suitable for DIN rail mounting, making it ideal for control panels and factory networks. It also supports industrial protocols such as Modbus RTU, providing reliable communication in harsh environments.
![ULI-342TC_02--20250416145820[1].png](https://image.mono.ipros.com/public/product/image/245492/IPROS5141955605840217937.png?w=280&h=280)
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basic information
- Conversion: USB⇔RS-422/485 (bidirectional, 2 ports) - Communication distance: Up to 1.2km - Serial data rate: Up to 921.6kbps - USB specification: USB 2.0 (up to 480Mbps), Type B high retention connector - Isolation protection: 3kV optical isolation (between ports) - LED indicators: TD, RD - Power supply method: Powered by USB port (high power devices <500mA) - Operating temperature range: -20 to 70℃ - RS-422/485 connection: Terminal block (2 ports) - Enclosure / Installation: Plastic enclosure, DIN rail mountable - Size: 84.5 × 119.1 × 29.3 mm - Weight: Approximately 181g - Driver: Asix - Supported OS: Windows 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 multiple RS-485 devices (PLC, measuring instruments) - Data collection via USB connection of Modbus RTU compatible devices - Space-saving wiring through DIN rail installation in control panels - Sites requiring voltage surge and ground loop countermeasures - High-reliability serial communication in factory networks
Line up（1）
| Model number | overview |
|---|---|
| ULI-342TC（BB-USOPTL4DR-2-B） | USB⇔RS-422/485 (2 ports), 3kV isolation, DIN rail compatible model |
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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.
