1. Uvod
This manual provides instructions for the WITMOTION USB to RS485 Modbus RTU UART Converter Cable. This device offers a straightforward method to connect RS485 Modbus level serial interface devices to a computer via USB. It supports various operating systems and is designed for reliable data transfer.
1.1 Što se nalazi u kutiji
- 1 x WitMotion USB-RS485 serial cable (1 meter)
- 1 x Welcome guide
Image 1: The WITMOTION USB to RS485 Converter Cable, showing the USB-A connector and the 4-way female socket header.
2. Značajke
- Robustan dizajn: Provides a fast, simple way to connect devices with an RS485 Modbus level serial interface to USB.
- Modbus RTU Access: Offers access to Modbus RTU A (RS485 A), B (RS485 B), VCC (5V), and GND connections.
- Plug and Play: USB specification 2.0 compliant, supporting the CH340 driver for convenient setup and connections.
- Kompatibilnost operativnog sustava: Compatible with Windows XP/7/8/10 (32-bit/64-bit), Linux, Wince, Mac, and Vista.
- Adjustable Baud Rates: Supports baud rates from 300 bps to 1.5 Mbps.
3. Postavljanje i instalacija
3.1 Instalacija upravljačkog programa
The converter cable utilizes a CH340 chip. Before connecting the cable, ensure the appropriate CH340 driver is installed on your operating system. Drivers are typically available from the manufacturer's website or can be found by searching for 'CH340 driver download'.
3.2 Spajanje kabela
- Spojite USB-A kraj kabela na dostupni USB priključak na računalu.
- Identify the 4-way female socket header. This header provides the following connections for your RS485 device:
- A (RS485 A): Data A line for RS485 communication.
- B (RS485 B): Data B line for RS485 communication.
- VCC (5V): 5 Volt power supply output.
- GND: Priključak uzemljenja.
- Connect the 4-way female socket header to your RS485 Modbus device, ensuring correct pin assignments (A to A, B to B, VCC to VCC, GND to GND). Refer to your device's documentation for its specific pinout.
Video 1: Official product video demonstrating the WITMOTION USB to RS485 Converter Cable and its connections.
4. Upute za rad
Once the cable is physically connected and the drivers are installed, your computer will recognize the device as a virtual COM port. You can then use serial communication software (e.g., PuTTY, RealTerm, or custom applications) to interact with your RS485 Modbus device.
- Open your preferred serial communication software.
- Select the COM port assigned to the WITMOTION USB to RS485 converter. You can find this in your computer's Device Manager (Windows) or by listing serial devices (Linux/Mac).
- Configure the serial port settings to match your RS485 Modbus device's requirements. Key settings include:
- Brzina prijenosa: Set between 300 bps and 1.5 Mbps (e.g., 9600, 19200, 115200).
- Bitovi podataka: Typically 8.
- Paritet: None, Even, or Odd.
- Stop bitovi: Typically 1 or 2.
- Initiate communication with your RS485 Modbus device according to its protocol specifications.
5. Specifikacije
| Značajka | Specifikacija |
|---|---|
| Marka | WITMOTION |
| Naziv modela | USB to RS485 Modbus RTU UART Converter Cable |
| Broj modela artikla | RS485 line |
| Vrsta konektora | USB |
| Vrsta kabela | USB |
| Kompatibilni uređaji | Industrial Equipment, Modbus Devices, Sensors |
| Posebna značajka | Prijenos podataka |
| Preporučena upotreba | Connecting devices with RS485 Modbus level serial interface to USB |
| Boja | Crna |
| Spoj konektora | Male-to-Male (USB-A to 4-way header) |
| Brzina prijenosa podataka | Do 1.5 megabita u sekundi |
| Broj pinova | 4 (on socket header) |
| Maksimalni Voltage | 5 Volts (VCC output) |
| Duljina kabela | 1 metara (3.28 stopa) |
| Težina artikla | 0.04 kilograma (1.44 unci) |
| Unutarnja/vanjska upotreba | Zatvoreni |
6. Rješavanje problema
- Uređaj nije prepoznat: Ensure the CH340 driver is correctly installed. Check your computer's Device Manager for any unknown devices or COM port errors. Try a different USB port.
- Greške u komunikaciji: Verify that the baud rate, data bits, parity, and stop bits in your serial communication software match the settings of your RS485 Modbus device. Incorrect settings are a common cause of communication failure.
- Neispravno ožičenje: Double-check the connections between the converter cable's 4-way header and your RS485 device. Ensure A connects to A, B to B, VCC to VCC (if powering the device), and GND to GND.
- Nema prijenosa podataka: Confirm that your RS485 device is powered on and functioning correctly. Test with a known working RS485 device if possible.
- Isprekidana veza: Ensure all connections are secure. Avoid excessively long or unshielded RS485 bus lines, which can introduce noise.
7. Jamstvo i podrška
WITMOTION provides a Jamstvo 12 mjeseci for this product, along with lifetime friendly customer service.
7.1 Dobivanje podrške
If you require assistance or have questions, please use one of the following methods:
- Guiding Card: Refer to the tutorial link printed on the guiding card included in the product package.
- Online Tutorials: Posjetiti wit-motion.com and navigate to the support page to download complete tutorials and documentation.
- Podrška e-poštom: Contact the WITMOTION support team directly via email at support@wit-motion.com.