waveshare USB to RS485/422 Industrial Grade Isolated Converter

1. Koniecview

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.

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

2. Zawartość opakowania

Sprawdź, czy w opakowaniu znajdują się wszystkie elementy:

• USB to RS485/422 Isolated Converter Unit
• Kabel USB typu B
• Mały śrubokręt

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

3. Funkcje

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.
• Power Isolation: Features unibody power supply isolation, providing stable isolated voltage bez konieczności dodatkowego zasilania izolowanego terminala.
• Digital Isolation: Incorporates unibody digital isolation for signal isolation, high reliability, strong anti-interference, and low power consumption.
• Przejściowa objętośćtage Suppressor (TVS): Skutecznie tłumi skoki objętościtage i skok przejściowy 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.
• Wskaźniki LED: Three LEDs indicate power (PWR), transmit data (TXD), and receive data (RXD) status.
• Wzornictwo przemysłowe: Industrial rail-mount ABS case design, compact, easy to install, and cost-effective.

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

Rysunek 4: Koniecview of key features and the original FT232RL chip.

4. Funkcje ochronne

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

• TVS (przejściowa ilośćtage Suppressor): Chroni przedtage kolce.
• Self-Recovery Fuse: Automatically resets after an overcurrent event.
• Protection Diodes: Safeguard against over-current and over-voltage.
• Ochrona ESD: 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. Opis interfejsu

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.
• Wskaźniki LED:
  • PWR (czerwony): Illuminates when the USB connection is established and voltage zostało wykryte.
  • TXD (Green): Blinks when the USB port sends data.
  • RXD (Blue): Blinks when the device ports receive data.

Rysunek 6: Szczegółowy view of the converter's interfaces and LED indicators.

6. Konfiguracja i instalacja

Aby poprawnie skonfigurować i zainstalować urządzenie, wykonaj następujące czynności:

1. Połącz z hostem: 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. Konfiguracja rezystora końcowego: 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. Instalacja sterownika: 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. Montowanie: 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. Instrukcja obsługi

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

• Transmisja danych: 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.
• Odległość transmisji: 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.
• Zgodność systemu: 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. Specyfikacje

9. Rozwiązywanie Problemów

If you encounter issues with the converter, consider the following:

• No Power (PWR LED off): Ensure the USB cable is securely connected to both the converter and the host computer. Try a different USB port or cable.
• Brak transmisji danych (diody TXD/RXD nie migają): 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.
• Połączenie przerywane: 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.
• Urządzenie nierozpoznane: Reinstall the FTDI drivers. Try connecting to a different computer to rule out host-specific issues.

10. Konserwacja

To ensure the longevity and optimal performance of your converter:

• Czyszczenie: Do czyszczenia zewnętrznej części urządzenia należy używać miękkiej, suchej ściereczki. Unikaj stosowania płynnych środków czyszczących i rozpuszczalników.
• Składowanie: Store the converter in a cool, dry environment away from direct sunlight and extreme temperatures when not in use.
• Warunki środowiskowe: Operate the device within the specified temperature (-15°C ~ 70°C) and humidity (5%RH ~ 95%RH) ranges.
• Zarządzanie kablami: Ensure cables are not kinked or under excessive strain to prevent damage.

11. Gwarancja i pomoc techniczna

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

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

• Instrukcja obsługi (PDF)
• Instrukcja użytkownika (PDF)