1. ບົດແນະນຳ
This manual provides detailed instructions for the installation, operation, and maintenance of the GODIYMODULES Industrial USB to RS485 Converter. This device facilitates communication between a USB-enabled computer and RS485 devices, commonly used in industrial automation, data acquisition, and other serial communication applications. Please read this manual thoroughly before using the product to ensure proper functionality and safety.
Figure 1: GODIYMODULES Industrial USB to RS485 Converter
2. ຄຸນສົມບັດ
- Supports STC MCU download.
- Adjustable baud rate: 300 to 115200 BPS.
- Includes software for serial port setup and power supply configuration.
- Provides 5V, 200mA current to external devices.
- Signal indication: Red LED for data receiving (RXD).
- Signal indication: Green LED for data transmitting (TXD).
Figure 2: Converter with LED RXD, LED TXD, GND, D-/B-, D+/A+, and 5V labels
3. ຂໍ້ມູນຈໍາເພາະ
| ຄຸນລັກສະນະ | ມູນຄ່າ |
|---|---|
| ໝາຍເລກຕົວແບບ | db620c38-21a9-43cd-90fb-dbaa93129d07 |
| ຍີ່ຫໍ້ | GODIYMODULES |
| ປະເພດຕົວເຊື່ອມຕໍ່ | USB to RS485 Terminal Block |
| ອຸປະກອນທີ່ເຂົ້າກັນໄດ້ | Desktop PCs, PLCs, MCUs, and other RS485 devices |
| ຈໍານວນພອດ | 1 (USB) to 1 (RS485) |
| ອັດຕາ Baud | 300-115200 BPS |
| ຜົນໄດ້ຮັບ Voltage/ປັດຈຸບັນ | 5V, 200mA (for external devices) |
| ສີ | Green (terminal block) |
| ນ້ໍາຫນັກລາຍການ | 1.06 ອອນສ໌ (ປະມານ 30 ກຣາມ) |
| ຂະໜາດແພັກເກັດ | 3.94 x 1.98 x 0.79 ນິ້ວ (ປະມານ 10 x 5 x 2 ຊມ) |
4. ການຕິດຕັ້ງແລະການຕິດຕັ້ງ
Follow these steps to set up your Industrial USB to RS485 Converter:
- ການຕິດຕັ້ງໄດເວີ: Before connecting the converter, install the necessary USB serial port drivers on your computer. These drivers are typically provided on a mini-CD or available for download from the manufacturer's webເວັບໄຊ.
- ເຊື່ອມຕໍ່ກັບຄອມພິວເຕີ: Plug the USB end of the converter into an available USB port on your computer. The operating system should detect the new hardware and assign a COM port number.
- Identify COM Port: Verify the assigned COM port number through your computer's Device Manager (e.g., "Ports (COM & LPT)").
- Wiring the RS485 Side: Connect your RS485 device to the terminal block of the converter. Ensure correct polarity for D+/A+ and D-/B-. Refer to the connection diagrams below for common configurations.
4.1 ແຜນວາດການເຊື່ອມຕໍ່
Figure 3: Point-to-Point / 2-line Half-Duplex Connection (PC1 to single RS485 device)
- Connect the converter's D+/A+ terminal to the RS485 device's 485+ ສະຖານີ.
- Connect the converter's D-/B- terminal to the RS485 device's 485- ສະຖານີ.
- ໄດ້ GND ແລະ 5V terminals are optional for power supply to external devices if needed.
Figure 4: Point-to-Multipoint / 2-line Half-Duplex Connection (PC1 to multiple RS485 devices)
- Connect the converter's D+/A+ terminal ກັບ 485+ bus line.
- Connect the converter's D-/B- terminal ກັບ 485- bus line.
- All RS485 devices should be connected in parallel to the same 485+ ແລະ 485- bus lines.
- Ensure proper termination resistors are used on the bus if required by your RS485 network.
Figure 5: LX08H to LX08H Half-Duplex Communication
- ເຊື່ອມຕໍ່ D+/A+ of the first converter (PC1) to D+/A+ of the second converter (PC2).
- ເຊື່ອມຕໍ່ D-/B- of the first converter (PC1) to D-/B- of the second converter (PC2).
- This configuration allows two computers to communicate via RS485 using two converters.
5. ການດໍາເນີນງານ
Once the converter is physically connected and drivers are installed, you can begin serial communication.
- ການຕັ້ງຄ່າຊອບແວຣ: Use a serial communication program (e.g., PuTTY, RealTerm, or custom software) to configure the COM port settings. Ensure the baud rate, data bits, parity, and stop bits match those of your RS485 device.
- ການສົ່ງຂໍ້ມູນ: Send and receive data through the configured COM port. The converter will automatically handle the conversion between USB and RS485 signals.
- ຕົວຊີ້ວັດ LED:
- ໄດ້ Red LED (RXD) will flash when the converter is receiving data from the RS485 bus.
- ໄດ້ Green LED (TXD) will flash when the converter is transmitting data to the RS485 bus.
- ການສະຫນອງພະລັງງານພາຍນອກ: If your external RS485 device requires power, you can utilize the 5V ແລະ GND terminals on the converter, which provide up to 200mA. Ensure your device's power requirements do not exceed this limit.
6. ບໍາລຸງຮັກສາ
The GODIYMODULES Industrial USB to RS485 Converter is designed for durability and requires minimal maintenance.
- ທໍາຄວາມສະອາດ: ຮັກສາອຸປະກອນໃຫ້ສະອາດ ແລະບໍ່ມີຝຸ່ນ. ໃຊ້ຜ້າອ່ອນໆ, ແຫ້ງເພື່ອທໍາຄວາມສະອາດ. ຫຼີກເວັ້ນການເຮັດຄວາມສະອາດຂອງແຫຼວ.
- ການເກັບຮັກສາ: Store the converter in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- ການຈັດການ: Handle the device with care to prevent physical damage to the USB connector or terminal block.
7. ການແກ້ໄຂບັນຫາ
| ບັນຫາ | ສາເຫດທີ່ເປັນໄປໄດ້ | ການແກ້ໄຂ |
|---|---|---|
| ອຸປະກອນບໍ່ຮັບຮູ້ໂດຍຄອມພິວເຕີ. | Missing or incorrect drivers. Faulty USB port. | Install the correct drivers. Try a different USB port. Check Device Manager for errors. |
| No data transmission/reception. | Incorrect wiring. Incorrect COM port settings (baud rate, parity, etc.). RS485 device not powered or faulty. | Verify RS485 wiring (D+/A+, D-/B-). Check COM port settings in your software. Ensure the RS485 device is operational. Check LED indicators for activity. |
| ການສື່ສານຊົ່ວຄາວ. | Loose connections. Electrical noise/interference. Improper termination resistors on RS485 bus. | Secure all connections. Use shielded cables if necessary. Ensure proper RS485 bus termination. |
| Red/Green LEDs not flashing. | No data activity. Device not powered. | Ensure data is being sent/received. Check USB connection. |
8. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ
For warranty information and technical support, please refer to the documentation provided with your purchase or contact GODIYMODULES customer service through their official webເວັບໄຊ.
