1. Johdanto
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. Ominaisuudet
- 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. Tekniset tiedot
| Attribuutti | Arvo |
|---|---|
| Mallinumero | db620c38-21a9-43cd-90fb-dbaa93129d07 |
| Merkki | GODIYMODULES |
| Liittimen tyyppi | USB to RS485 Terminal Block |
| Yhteensopivat laitteet | Desktop PCs, PLCs, MCUs, and other RS485 devices |
| Porttien määrä | 1 (USB) to 1 (RS485) |
| Tiedonsiirtonopeus | 300-115200 BPS |
| Lähtö Voltage/Nykyinen | 5V, 200mA (for external devices) |
| Väri | Green (terminal block) |
| Tuotteen paino | 1.06 unssia (noin 30 grammaa) |
| Pakkauksen mitat | 3.94 x 1.98 x 0.79 tuumaa (noin 10 x 5 x 2 cm) |
4. Asennus ja asennus
Follow these steps to set up your Industrial USB to RS485 Converter:
- Ohjaimen asennus: 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 websivusto.
- Yhdistä tietokoneeseen: 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.
- Tunnista COM-portti: 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 Liitäntäkaaviot
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+ terminaali.
- Connect the converter's D-/B- terminal to the RS485 device's 485- terminaali.
- The GND ja 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+ terminaaliin 485+ bus line.
- Connect the converter's D-/B- terminaaliin 485- bus line.
- All RS485 devices should be connected in parallel to the same 485+ ja 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
- Yhdistä D+/A+ of the first converter (PC1) to D+/A+ of the second converter (PC2).
- Yhdistä 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. Käyttö
Once the converter is physically connected and drivers are installed, you can begin serial communication.
- Ohjelmiston kokoonpano: 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.
- Tiedonsiirto: Send and receive data through the configured COM port. The converter will automatically handle the conversion between USB and RS485 signals.
- LED-ilmaisimet:
- The Red LED (RXD) will flash when the converter is receiving data from the RS485 bus.
- The Green LED (TXD) will flash when the converter is transmitting data to the RS485 bus.
- Ulkoinen virtalähde: If your external RS485 device requires power, you can utilize the 5V ja GND terminals on the converter, which provide up to 200mA. Ensure your device's power requirements do not exceed this limit.
6. Huolto
The GODIYMODULES Industrial USB to RS485 Converter is designed for durability and requires minimal maintenance.
- Puhdistus: Pidä laite puhtaana ja pölyttömänä. Käytä puhdistamiseen pehmeää, kuivaa liinaa. Vältä nestemäisiä puhdistusaineita.
- Varastointi: Store the converter in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Käsittely: Handle the device with care to prevent physical damage to the USB connector or terminal block.
7. Vianmääritys
| Ongelma | Mahdollinen syy | Ratkaisu |
|---|---|---|
| Tietokone ei tunnista laitetta. | 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. |
| Intermittent communication. | 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. Takuu ja tuki
For warranty information and technical support, please refer to the documentation provided with your purchase or contact GODIYMODULES customer service through their official websivusto.