waveshare USB to RS485/422 Industrial Grade Isolated Converter

1. ເກີນview

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.

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

2. ເນື້ອໃນຊຸດ

ກວດ​ສອບ​ວ່າ​ລາຍ​ການ​ທັງ​ຫມົດ​ແມ່ນ​ມີ​ຢູ່​ໃນ​ຊຸດ​:

• USB to RS485/422 Isolated Converter Unit
• ສາຍ USB-B
• Screwdriver ຂະຫນາດນ້ອຍ

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

3. ຄຸນສົມບັດ

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 without requiring an extra power supply for the isolated terminal.
• Digital Isolation: Incorporates unibody digital isolation for signal isolation, high reliability, strong anti-interference, and low power consumption.
• Transient Voltage Suppressor (TVS): ສະກັດກັ້ນຄວາມດັນໄຟຟ້າເພີ່ມຂຶ້ນຢ່າງມີປະສິດທິພາບtage ແລະ transient spike 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.
• ຕົວຊີ້ວັດ LED: Three LEDs indicate power (PWR), transmit data (TXD), and receive data (RXD) status.
• ການອອກແບບອຸດສາຫະກໍາ: Industrial rail-mount ABS case design, compact, easy to install, and cost-effective.

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

ຮູບ 4: ເກີນview of key features and the original FT232RL chip.

4. ລັກສະນະການປົກປ້ອງ

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

• TVS (Transient Voltagຕົວສະກັດກັ້ນ): ປ້ອງກັນ voltagຮວງ e.
• Self-Recovery Fuse: Automatically resets after an overcurrent event.
• Protection Diodes: Safeguard against over-current and over-voltage.
• ການປົກປ້ອງ 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. ລາຍລະອຽດຂອງການໂຕ້ຕອບ

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.
• ຕົວຊີ້ວັດ LED:
  • PWR (Red): Illuminates when the USB connection is established and voltage ຖືກກວດພົບ.
  • TXD (Green): Blinks when the USB port sends data.
  • RXD (Blue): Blinks when the device ports receive data.

ຮູບທີ 6: ລາຍລະອຽດ view of the converter's interfaces and LED indicators.

6. ການຕິດຕັ້ງ & ການຕິດຕັ້ງ

ປະຕິບັດຕາມຂັ້ນຕອນເຫຼົ່ານີ້ສຳລັບການຕັ້ງຄ່າ ແລະ ການຕິດຕັ້ງທີ່ຖືກຕ້ອງ:

1. ເຊື່ອມຕໍ່ກັບໂຮສ: 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. ການຕັ້ງຄ່າຕົວຕ້ານທານປາຍທາງ: 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. ການຕິດຕັ້ງໄດເວີ: 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. ການຕິດຕັ້ງ: 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. ຄໍາແນະນໍາການດໍາເນີນງານ

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

• ການສົ່ງຂໍ້ມູນ: 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.
• ໄລຍະການສົ່ງ: 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.
• ຄວາມເຂົ້າກັນໄດ້ຂອງລະບົບ: 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. ຂໍ້ມູນຈໍາເພາະ

9. ການແກ້ໄຂບັນຫາ

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

• ບໍ່ມີພະລັງງານ (ໄຟ LED PWR ປິດ): 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.
• ການເຊື່ອມຕໍ່ແບບບໍ່ຢຸດຢັ້ງ: 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.
• ອຸປະກອນບໍ່ຮັບຮູ້: Reinstall the FTDI drivers. Try connecting to a different computer to rule out host-specific issues.

10. ບໍາລຸງຮັກສາ

To ensure the longevity and optimal performance of your converter:

• ທໍາຄວາມສະອາດ: ໃຊ້ຜ້າອ່ອນແລະແຫ້ງເພື່ອທຳຄວາມສະອາດດ້ານນອກຂອງອຸປະກອນ. ຫຼີກລ່ຽງການໃຊ້ນ້ຳຢາທຳຄວາມສະອາດ ຫຼື ຕົວລະລາຍ.
• ການເກັບຮັກສາ: Store the converter in a cool, dry environment away from direct sunlight and extreme temperatures when not in use.
• ເງື່ອນໄຂສິ່ງແວດລ້ອມ: Operate the device within the specified temperature (-15°C ~ 70°C) and humidity (5%RH ~ 95%RH) ranges.
• ການຄຸ້ມຄອງສາຍໄຟ: ໃຫ້ແນ່ໃຈວ່າສາຍໄຟບໍ່ບິດງໍ ຫຼື ມີແຮງດຶງຫຼາຍເກີນໄປເພື່ອປ້ອງກັນຄວາມເສຍຫາຍ.

11. ການຮັບປະກັນແລະການສະ ໜັບ ສະ ໜູນ

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

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

• ຄູ່ມືຜູ້ໃຊ້ (PDF)
• ຄູ່ມືຜູ້ໃຊ້ (PDF)