3-system insulation & up to 15km extension of serial-to-fiber optic conversion
The ULI-211CI is an industrial converter that converts RS-232/422/485 signals to multimode optical fiber, achieving both noise resistance and long-distance transmission. With three-way isolation (2kV) for input, output, and power supply, it protects equipment from surges and ground loops. It standardly supports Modbus ASCII/RTU, making it easy to connect to control devices. It can be extended up to 15 km with multimode optical fiber using ST connectors. It features an IP20 plastic housing suitable for DIN rail mounting and can operate in a wide temperature range of -40 to 85°C. It operates on an external power supply of 10-48VDC, and termination/bias can be switched via a switch. It enables reliable serial communication in environments with high EMI/RFI, such as factories, energy facilities, and transportation infrastructure.
![ULI-211CI_01----20231107170727[1].jpg](https://image.mono.ipros.com/public/product/image/245492/IPROS1631904675641229906.jpg?w=280&h=280)
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basic information
- Supported interfaces: RS-232 / RS-422 / RS-485 (2-wire, 4-wire) - Data rate: Up to 115.2kbps (auto-detection) - Optical fiber: Multi-mode / ST connector, wavelength 820nm - Communication distance: Up to 15km - Isolation protection: Three-way isolation for input, output, and power (2kV) - EMI/RFI resistance: High resistance due to optical communication - Protocol: Modbus ASCII / RTU compatible - Termination / Bias: 120Ω termination, 1.2kΩ bias (switch selectable) - Power supply: External PSU 10–48VDC, power consumption approximately 0.5W (1.3W when terminated) - Operating temperature: -40 to 85°C, humidity 0 to 95% (non-condensing) - Enclosure / Mounting: IP20 plastic enclosure, DIN rail compatible - Size / Weight: 123×113×32mm, approximately 200g - Certification: CE, FCC, UL C1/D2, UL 508
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
- Long-distance serial transmission between control devices (PLC/RTU) within the factory - Noise countermeasures through fiber optic networking of Modbus RTU devices - Serial extension between substations and outdoor panels (EMI/RFI multi-environment) - Insulated communication aimed at improving safety in oil and gas plants - Long-distance monitoring and signal transmission in railway/transport infrastructure - Connection of monitoring systems for power generation/renewable energy facilities - Ground loop countermeasures in server rooms/data centers
Line up（1）
| Model number | overview |
|---|---|
| ULI-211CI（BB-FOSTCDRI） | RS-232/422/485 compatible, multi-mode ST, three-channel isolation, DIN rail mount model. |
catalog（2）
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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.
