waveshare USB to RS485/422 Industrial Grade Isolated Converter

1. 이상view

The waveshare USB to RS485/422 Industrial Grade Isolated Converter is designed to facilitate reliable data transmission between computers and RS485/RS422 devices. It incorporates original FT232RL and SP485EEN chips for stable and fast communication, along with comprehensive protection features. This manual provides essential information for the proper setup, operation, and maintenance of the device.

그림 1: 전면 view of the waveshare USB to RS485/422 Industrial Grade Isolated Converter.

2. 패키지 내용

패키지에 모든 품목이 들어 있는지 확인하세요.

• USB to RS485/422 Isolated Converter Unit
• USB-B 케이블
• 작은 드라이버

Figure 2: Included items: the converter, a USB cable, and a screwdriver.

3. 특징

The converter is equipped with advanced features for robust industrial applications:

• Original Chips: Onboard Original FT232RL and SP485EEN chips ensure fast, stable, and reliable communication with better compatibility.
• 전원 절연: Features unibody power supply isolation, providing stable isolated voltage without requiring an extra power supply for the isolated terminal.
• 디지털 고립: Incorporates unibody digital isolation for signal isolation, high reliability, strong anti-interference, and low power consumption.
• 과도 볼륨tage 억제기(TVS): 급증하는 거래량을 효과적으로 억제합니다.tage 및 과도 스파이크 voltage in the circuit, offering lightningproof and anti-electrostatic protection.
• Self-Recovery Fuse & Protection Diodes: Ensures stable current/voltage outputs, providing over-current/over-voltage proof and improving shock resistance.
• ESD & Surge Protection: Onboard 15KV ESD isolation protection and 600W lightningproof & anti-surge protection.
• Terminal Resistor: Onboard 120R terminal resistor on the RS485/RS422 ports, enabled by default and configurable via jumper.
• LED 표시등: Three LEDs indicate power (PWR), transmit data (TXD), and receive data (RXD) status.
• 산업 디자인: Industrial rail-mount ABS case design, compact, easy to install, and cost-effective.

Figure 3: The converter's industrial-grade design and isolation capabilities.

그림 4: 이상view of key features and the original FT232RL chip.

4. 보호 기능

The device is engineered with multiple layers of protection to ensure stable and safe operation:

• TVS(트랜지언트 볼륨tage 억제기): 볼륨으로부터 보호합니다tag전자 스파이크.
• Self-Recovery Fuse: Automatically resets after an overcurrent event.
• Protection Diodes: Safeguard against over-current and over-voltage.
• ESD 보호: 15KV Electrostatic Discharge protection.
• Lightningproof & Anti-Surge Protection: 600W protection against lightning and power surges.

Figure 5: Visual representation of the converter's comprehensive protection mechanisms.

5. 인터페이스 설명

The converter features clearly labeled interfaces and indicators for ease of use:

• RS485/RS422 Interfaces: Screw terminals for connecting to RS485 (A+, B-, PE) or RS422 (PE, TA, TB, RA, RB) devices.
• USB & Power: USB-B port for connecting to the host computer, providing both data and power.
• LED 표시등:
  • PWR(빨간색): Illuminates when the USB connection is established and voltage가 감지되었습니다.
  • TXD (Green): Blinks when the USB port sends data.
  • RXD (Blue): Blinks when the device ports receive data.

그림 6: 상세 view of the converter's interfaces and LED indicators.

6. 설정 및 설치

올바른 설정 및 설치를 위해 다음 단계를 따르십시오.

1. 호스트에 연결: Connect the converter to your computer's USB port using the provided USB-B cable. The PWR LED should light up.
2. Connect to RS485/RS422 Device: Use the screw terminals to connect your RS485 or RS422 device. Ensure correct polarity (A+, B- for RS485; PE, TA, TB, RA, RB for RS422).
3. 단자 저항 구성: The onboard 120R terminal resistor is enabled by default. If your application requires it to be disabled, refer to the product's detailed documentation for jumper configuration.
4. 드라이버 설치: Install the necessary drivers for the FT232RL chip on your operating system (Mac, Linux, Android, Windows 11/10/8.1/8/7). Drivers are typically available from the FTDI website or Waveshare's product page.
5. 설치: The converter features a rail-mount design, suitable for 35mm DIN rails, or can be wall-mounted using the integrated mounting holes.

Figure 7: The converter supports both wall-mount and rail-mount installations.

7. 사용 설명서

Once connected and drivers are installed, the converter operates transparently, enabling bidirectional communication between your USB host and RS485/RS422 devices.

• 데이터 전송: The device supports point-to-multipoint communication for up to 32 nodes. For more than 16 devices, using repeaters is recommended to maintain signal integrity over longer distances.
• 전송 거리: The USB signal can be converted into a balanced differential RS485/422 signal. The transmission distance is approximately 1.2km for RS485/422, and about 5 meters for USB.
• 시스템 호환성: Compatible with a wide range of operating systems including Mac, Linux, Android, WinCE, and Windows (11, 10, 8.1, 8, 7).

Figure 8: The converter supports long-distance transmission and multiple operating systems.

8. 사양

9. 문제 해결

변환기 사용 중 문제가 발생하면 다음 사항을 고려하십시오.

• 전원 없음(PWR LED 꺼짐): Ensure the USB cable is securely connected to both the converter and the host computer. Try a different USB port or cable.
• No Data Transmission (TXD/RXD LEDs not blinking): Verify that the correct drivers are installed for the FT232RL chip. Check the wiring to your RS485/RS422 device for correct polarity and secure connections. Confirm that the communication parameters (baud rate, data bits, stop bits, parity) match between your host and the connected device.
• 간헐적인 연결: Check for electromagnetic interference in the environment. Ensure cable lengths are within specified limits (5m for USB, 1.2km for RS485/422). For long RS485/422 networks or many nodes, consider using repeaters.
• 인식되지 않는 장치: Reinstall the FTDI drivers. Try connecting to a different computer to rule out host-specific issues.

10. 유지관리

변환기의 수명과 최적의 성능을 보장하려면 다음 사항을 준수하십시오.

• 청소: 기기 외부를 닦을 때는 부드럽고 마른 천을 사용하십시오. 액체 세척제나 용제 사용은 피하십시오.
• 저장: Store the converter in a cool, dry environment away from direct sunlight and extreme temperatures when not in use.
• 환경 조건: Operate the device within the specified temperature (-15°C ~ 70°C) and humidity (5%RH ~ 95%RH) ranges.
• 케이블 관리 : 손상을 방지하려면 케이블이 꼬이거나 과도한 압력을 받지 않도록 하세요.

11. 보증 및 지원

For warranty information and technical support, please contact the manufacturer, Waveshare, directly. You may also find additional resources and updated drivers on their official web대지.

Additional documentation for this product can be found via the following links:

• 사용 설명서 (PDF)
• 사용 설명서 (PDF)