1. Product Overview

Product Name: UCON310-I
Model: UCON310-I
Series: UCON Series – Universal Serial Interface Converters
Article Number: UCON310-I
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: info@rayontech.com.tw / rayon@ms1.hinet.net
- Website: [www.rayontech.com.tw](http://www.rayontech.com.tw) / [www.rayontech.com](http://www.rayontech.com)

The UCON310-I is a universal serial interface converter designed to provide ground isolation between RS-232, RS-422, and RS-485 communication interfaces. It serves as a multi-protocol converter and isolator, enabling safe and reliable data transmission between devices operating on different serial standards. The unit is compact, robust, and engineered for industrial and laboratory environments where electrical isolation and signal integrity are critical.

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2. Key Features

- Universal Serial Input: Supports one configurable input interface selectable between RS-232, RS-422, or RS-485 via DIP switch settings.
- Ground-Isolated RS-232 Output: Provides one isolated RS-232 output port, ensuring electrical separation between connected devices.
- Flexible Conversion Modes: Operates as:
- RS-232 to Ground-Isolated RS-232 Isolator
- RS-422 to Isolated RS-232 Converter
- RS-485 to Isolated RS-232 Converter
- Auto Data Direction Control: Built-in automatic data direction management for RS-485 communication, eliminating the need for manual control signals.
- LED Indicators: Dedicated LEDs for power and data transmission status on both input and output ports (TXD/RXD activity).
- Dual DB9 Connectors: Two male DB9 connectors for straightforward serial connectivity.
- Compact and Durable Design: Small form factor (92 × 118 × 27 mm) suitable for desktop or embedded applications.
- Wide Environmental Tolerance: Operates reliably in temperatures from 0°C to 55°C and humidity up to 95% RH.
- Low Power Consumption: Operates on 5 VDC with a typical current draw of 200 mA.
- Safety and Reliability: Provides galvanic isolation to prevent ground loops and protect connected equipment from electrical interference.
- Ease of Configuration: DIP switch selectable interface modes simplify setup and reconfiguration.
- Compatibility: Works seamlessly with Rayon’s TB485 terminal block kit and other related interface converters such as TWIN485 and ULOG310-I.

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3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Model | UCON310-I |
| Input Interface (Serial 1) | RS-232 / RS-422 / RS-485 selectable |
| Output Interface (Serial 2) | Ground-isolated RS-232 |
| Connector Type | 2 × DB9 male connectors |
| Isolation Type | Electrical ground isolation between Serial 1 and Serial 2 |
| Power Supply | 5 VDC (via UP110/UP220 adapter) |
| Current Consumption | Typical 200 mA |
| LED Indicators | PWR (Power), TXD/RXD for Serial 1 and Serial 2 |
| Dimensions | 92 mm (W) × 118 mm (L) × 27 mm (H) |
| Weight | Approx. 200 g (typical, not specified) |
| Material | Industrial-grade enclosure (Rayon proprietary design) |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | 0°C to 65°C |
| Operating Humidity | 0% to 95% RH (non-condensing) |
| Storage Humidity | 5% to 95% RH |
| Signal Pins (Serial 1) | TX+, TX−, RX+, RX−, isolated GND |
| Signal Pins (Serial 2) | Standard RS-232 pinout with isolated ground |
| RS-485 Mode | Auto Data Direction Control supported |
| Accessories | TB485 DB9 Female to RS-485 terminal block kit (optional) |

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4. Functionality

The UCON310-I functions as a universal serial interface converter and isolator, bridging communication between devices using different serial standards while maintaining electrical isolation. It is particularly useful in environments where ground potential differences or electrical noise can cause data errors or equipment damage.

Operating Modes:
1. RS-232 to Ground-Isolated RS-232 Isolator:
Provides full-duplex RS-232 communication with galvanic isolation, protecting both devices from ground loops.
2. RS-422 to Isolated RS-232 Converter:
Converts differential RS-422 signals to isolated RS-232 levels for long-distance or industrial communication.
3. RS-485 to Isolated RS-232 Converter:
Enables RS-485 network devices to communicate with RS-232 equipment, with automatic data direction control.

Use Cases:
- Industrial automation systems requiring isolated serial communication.
- Laboratory instrumentation where ground isolation prevents measurement interference.
- Data acquisition systems connecting RS-485 sensors to RS-232 controllers.
- Communication between legacy RS-232 devices and modern RS-422/RS-485 networks.
- Protection of PCs, PLCs, and embedded controllers from electrical surges or ground potential differences.

Compatibility:
- Compatible with standard RS-232, RS-422, and RS-485 devices.
- Works with Rayon’s TB485 terminal block adapter for easy wiring.
- Integrates with Rayon’s ULOG310-I for USB-based monitoring and diagnostics.

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5. Components & Accessories

Included Components:
- UCON310-I Converter Unit
- User documentation (configuration guide)
- Power adapter (UP110 or UP220, 5 VDC output)

Optional Accessories:
- TB485 Kit: DB9 Female to RS-485 terminal block adapter for direct wiring to RS-485 networks.
- TWIN485 Box: Dual-channel ground-isolated RS-232 to RS-422/RS-485 converter for multi-port applications.
- ULOG310-I Box: USB-connected version with real-time data monitoring and dual COM port emulation.

Connectors:
- Serial 1 (Input): DB9 male, configurable via DIP switch for RS-232/RS-422/RS-485.
- Serial 2 (Output): DB9 male, fixed RS-232 with isolated ground.
- Power Input: 5 VDC barrel connector compatible with UP110/UP220 adapters.

LED Indicators:
- PWR: Illuminates when DC power is applied.
- Serial 1 TXD/RXD: Indicates data transmission and reception on input port.
- Serial 2 TXD/RXD: Indicates data transmission and reception on isolated output port.

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6. Installation & Setup

Requirements:
- 5 VDC regulated power supply (UP110 or UP220 recommended).
- Appropriate serial cables or TB485 terminal block for RS-485 wiring.
- Host and target devices supporting RS-232, RS-422, or RS-485 communication.

Mounting Options:
- Desktop placement or panel integration (mounting holes optional).
- Compact design allows installation in control cabinets or test benches.

Configuration Procedure:
1. Set Interface Type:
Use the DIP switch to select the desired input interface mode:
- RS-232: DIP 1 = OFF, DIP 2 = OFF
- RS-422: DIP 1 = ON, DIP 2 = ON
- RS-485: DIP 1 = OFF, DIP 2 = ON
2. Connect Devices:
- Connect the host device to Serial 1 (input).
- Connect the target device to Serial 2 (output).
3. Apply Power:
Connect the 5 VDC adapter and verify the PWR LED is lit.
4. Verify Communication:
Observe TXD/RXD LEDs for data activity on both ports.
5. Optional RS-485 Wiring:
Use the TB485 adapter to convert the DB9 connector to a 3-pin terminal block (Data+, Data−, GND).

Notes:
- Serial 1 shares ground with the power adapter.
- Serial 2 has an isolated ground, ensuring galvanic separation.
- Ensure correct DIP switch configuration before powering the unit.

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7. Performance & Capabilities

The UCON310-I delivers reliable, noise-immune serial communication across multiple interface standards. Its isolation design eliminates ground loops and minimizes signal degradation in electrically noisy environments.

Performance Highlights:
- Full-Duplex Communication: Supported in RS-232 and RS-422 modes.
- Auto Direction Control: Automatically manages data flow in RS-485 mode.
- Signal Integrity: Isolated ground ensures stable data transmission even under varying ground potentials.
- Low Power Operation: Efficient 5 VDC design with only 200 mA typical current draw.
- High Reliability: Industrial-grade components ensure long-term stability and minimal maintenance.
- Versatility: One device supports three serial standards, reducing inventory and simplifying system design.

Limitations:
- Designed for standard serial data rates (exact baud rate range not specified).
- Requires external power supply (not bus-powered).
- Not intended for outdoor or high-vibration environments without additional protection.

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8. Standards & Compliance

The UCON310-I adheres to industry-standard serial communication protocols and electrical safety practices. While specific certifications are not listed, Rayon Technology products are typically designed to meet or exceed the following standards:

- RS-232 (EIA/TIA-232-F)
- RS-422 (EIA/TIA-422-B)
- RS-485 (EIA/TIA-485-A)
- EMC Compliance: Designed for electromagnetic compatibility in industrial environments.
- Safety Compliance: Meets general low-voltage and isolation safety requirements.
- RoHS Compliance: Manufactured using lead-free and environmentally safe materials (typical for Rayon products).

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9. Additional Information

Warranty:
Standard manufacturer warranty provided by Rayon Technology Co., Ltd. (duration not specified; typically 1 year for industrial electronics).

Technical Support:
Rayon offers direct technical assistance via email. Customers can consult engineers with over 35 years of experience in serial communication systems for troubleshooting and application guidance.

Maintenance:
- No routine maintenance required.
- Periodic inspection of connectors and cables recommended.
- Ensure proper ventilation and avoid exposure to moisture or dust.

Firmware & Updates:
The UCON310-I operates as a hardware-based converter; no firmware updates are required. Configuration is entirely hardware-controlled via DIP switches.

Related Products:
- TWIN485: Dual-channel isolated RS-232 to RS-422/RS-485 converter.
- ULOG310-I: USB-connected version with real-time monitoring and dual COM port emulation for diagnostic applications.
- TB485: Terminal block adapter for RS-485 wiring.

Manufacturer’s Note:
Rayon Technology emphasizes the UCON310-I as a cost-effective, flexible solution for serial communication isolation and conversion. It reduces the need for multiple dedicated converters, simplifies inventory management, and provides a reliable safeguard against electrical interference in RS-232 environments.

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Summary

The Rayon UCON310-I is a universal, ground-isolated serial interface converter that bridges RS-232, RS-422, and RS-485 communication standards within a single compact device. It is engineered for industrial, laboratory, and automation environments where electrical isolation and signal integrity are essential. With configurable input modes, automatic RS-485 direction control, LED status indicators, and robust isolation, the UCON310-I ensures safe, stable, and flexible serial communication across diverse systems. Its compatibility with related Rayon accessories and converters further enhances its adaptability, making it a versatile and indispensable tool for engineers and system integrators managing mixed serial networks.