UOTEK UT-850N 1-Port USB to RS-485/422 Serial Converter

1. పరిచయం

The UOTEK UT-850N is a universal USB to RS-485/422 serial converter designed to bridge the communication gap between modern PCs and industrial equipment utilizing RS-485/422 interfaces. This device converts USB signals to balanced differential RS-485/422 signals, providing essential connectivity without requiring an external power supply. It features surge and ESD protection, ensuring reliable data transmission in various environments.

This manual provides detailed instructions for the setup, operation, and maintenance of your UT-850N converter.

Image 1.1: UOTEK UT-850N USB to RS-485/422 Serial Converter with included terminal block.

2 ఫీచర్లు

• ప్రమాణాలు: USBV1.1, RS-485/422 EIA.
• USB సిగ్నల్: VCC, DATA+, DATA-, GND, FG.
• RS-485 Signal: T+, T-, GND.
• RS-422 Signal: T+, T-, R+, R-, GND.
• వర్కింగ్ మోడ్: Asynchronous, point-to-point or point-to-multipoint, 2-wire half-duplex or 4-wire full-duplex.
• దిశ నియంత్రణ: Automatic data flow direction control technology.
• బాడ్ రేటు: 300-921.6Kbps, auto-detect serial signal.
• లోడ్ సామర్థ్యం: Supports point-to-multipoint communication, connecting up to 32 sets of RS-422 or RS-485 devices.
• ప్రసార దూరం: Up to 5,000m (9,600bps) for RS-485/422; up to 5m for USB.
• పోర్ట్ రక్షణ: Surge protection, ±15KV ESD protection.
• కనెక్టర్లు: USB-A male, DB9 male.
• ప్రసార మాధ్యమం: Twisted-pair or shielded cable.
• కేబుల్ పొడవు: 1.5మీ.
• ఆపరేటింగ్ ఉష్ణోగ్రత: -20°C నుండి 75°C.
• సాపేక్ష ఆర్ద్రత: 5% నుండి 95%.
• ఆపరేటింగ్ సిస్టమ్ మద్దతు: Windows (Android/2000/2003/2008/2012/XP/Vista/7/8/8.1/10/CE), Mac, Linux.

3. సెటప్

3.1 డ్రైవర్ ఇన్‌స్టాలేషన్

For Windows 8, Windows 10, and newer operating systems, the UT-850N converter typically operates driver-free (plug & play). For older operating systems such as Windows 2000/2003/XP/Vista/7, or for specific Linux/Mac OS versions, driver installation may be required. Please refer to the manufacturer's website for the latest driver downloads if automatic installation does not occur.

Image 3.1: The UT-850N converter supports various operating systems, including Windows, Mac, Linux, and Android.

3.2 హార్డ్‌వేర్ కనెక్షన్

1. Connect the USB-A male connector of the UT-850N to an available USB port on your computer.
2. Identify the RS-485/422 interface on your industrial device.
3. Connect the DB9 male connector of the UT-850N to your RS-485/422 device. Use the included terminal block for screw-terminal connections if your device requires it.

Image 3.2: The UT-850N converter connected to a terminal block for RS-485/422 wiring.

3.3 Wiring Diagrams and Pin Assignments

The UT-850N uses a DB9 male connector for RS-485/422. The pin assignments are crucial for correct communication. Refer to the following diagrams for standard wiring configurations.

Image 3.3: Pin assignments for DB9 male connector and physical dimensions of the UT-850N.

Image 3.4: Wiring diagrams for USB to RS-485 (point-to-point, multipoint, half-duplex) and USB to RS-422 (point-to-point, multipoint, full-duplex) connections.

4. ఆపరేటింగ్

4.1 వర్కింగ్ మోడ్‌లు

The UT-850N supports both RS-485 (2-wire half-duplex) and RS-422 (4-wire full-duplex) communication modes. It can be configured for point-to-point or point-to-multipoint communication. The device features internal zero-delay auto receiving and transmitting functions, automatically controlling data flow direction without requiring handshake signals (RTS, DTR).

4.2 బాడ్ రేట్

The converter automatically detects the serial signal baud rate, supporting a range from 300bps to 921.6Kbps.

4.3 LED సూచికలు

The UT-850N is equipped with LED indicators to show its status:

• పవర్ లైట్: Indicates that the device is powered on and connected to the USB port.
• RXD (Receive Data) Light: Flashes when data is being received by the converter from the RS-485/422 side.
• TXD (Transmit Data) Light: Flashes when data is being transmitted by the converter to the RS-485/422 side.

చిత్రం 4.1: క్లోజప్ view of the UT-850N showing the Power, RXD, and TXD LED indicators.

5. నిర్వహణ

To ensure the longevity and optimal performance of your UOTEK UT-850N converter, follow these maintenance guidelines:

• పొడిగా ఉంచండి: పరికరాన్ని తేమ లేదా ద్రవాలకు బహిర్గతం చేయకుండా ఉండండి.
• సున్నితంగా శుభ్రం చేయండి: Use a soft, dry cloth to clean the exterior. Do not use harsh chemicals or solvents.
• ఉష్ణోగ్రత నియంత్రణ: Operate and store the device within the specified temperature range (-20°C to 75°C).
• కేబుల్ కేర్: Avoid bending or kinking the cable excessively to prevent internal damage.
• ESD రక్షణ: While the device has built-in ESD protection, always handle it with care, especially in dry environments, to minimize static discharge risks.

6. ట్రబుల్షూటింగ్

If you encounter issues with your UT-850N converter, consider the following:

• విద్యుత్ దీపం లేదు: Ensure the USB cable is securely connected to both the converter and the computer. Try a different USB port or computer.
• No Data Transmission (RXD/TXD not flashing):
  • Verify all RS-485/422 wiring connections are correct according to the diagrams in Section 3.3.
  • Check the baud rate settings on both your computer's serial port software and the connected industrial device. Ensure they match.
  • Confirm that the industrial device is powered on and functioning correctly.
  • For older operating systems, ensure the correct drivers are installed.
• Intermittent Connection/Data Errors:
  • Check for electromagnetic interference (EMI) sources near the cable. Use shielded cables if necessary.
  • Ensure the transmission distance does not exceed the specified limits (5,000m for RS-485/422, 5m for USB).
  • Verify that the terminal resistors are correctly applied in RS-485/422 networks, especially for long distances or multi-point setups.
• PC ద్వారా పరికరం గుర్తించబడలేదు: Try connecting to a different USB port. Reinstall or update the USB serial port drivers if applicable.

7. స్పెసిఫికేషన్లు

8. వారంటీ మరియు మద్దతు

For warranty information and technical support, please refer to the official UOTEK webసైట్ లేదా మీ అధీకృత డీలర్‌ను సంప్రదించండి. వారంటీ క్లెయిమ్‌ల కోసం మీ కొనుగోలు రసీదును ఉంచండి.