• sales

    +86-0755-88291180

USB TO RS485 (B) User Guide

Function Description

CH343G is a USB bus adapter chip, which can convert USB to a high-speed asynchronous serial port, supports automatic identification and dynamic self-adaptation of communication baud rate of 115200bps and below, and provides commonly-used MODEM contact signals to expand asynchronous serial ports for computers. It can upgrade a common serial device or MCU directly to a USB bus.

Parameter

Product TypeUSB to 485
Power Supply5V
Communication Rate50bps ~ 3Mbps
Operating SystemMac OS, Linux, Windows 11 / 10 / 8.1 / 8 / 7, Android

How to Use

Windows

CDC Driver

The default driver of the computer is the CDC driver, which can be viewed through the device manager.

The software flow control is set by default. If you need to use CDC hardware flow, you need to connect the CFG of the board to EN (power-on self-test).

VCP Driver

The VCP driver is a manufacturer's driver and needs to be installed by itself. After installation, it can be viewed through Device Manager.

The default setting is software flow control. If you need to use VCP hardware flow, you can open it directly through the serial debugging assistant.

Linux/RPI

Taking RPI as an example, you can use the default driver. After connecting the device, you can use the following command to query the serial device name:

ls /dev/tty*


For example: use minicom to open UART0, then the command line input.

minicom -D /dev/ttyACM0

MacOS

Android

1. Open the APP and click Scan Device.   

2. Click the scanned device. 

3. Set the parameters to use.

TAG: ESP32-P4 PICO Development Board with MIPI DSI 10.1-inch Display ESP32 Thermal imaging ESP32-P4-ETH RJ45 POE DSI/MIPI 10.1 inch LCD Display Touchscreen/CSI Camera/Audio Speaker AI Deepseek Raspberry Pi Camera DeepSeek AI Voice Chat Camera Robot BOX ESP32-S3 Development Board 2 inch LCD N16R8 Touchscreen Display Camera ADXL354C Dev Board ESP32 S3 LCD Camera Development Board 2 inch Display QMI8658 Sensor / Battery Port LVGL/HMI For Arduino Wireless AW CB375N 2.4G/5GHz Dual Band WiFi5 Wireless module RTL8822CE CG Bluetooth 5.0 Raspberry Pi 5 Horizontal Drag Instructions Raspberry Pi Arduino board manager tutorial User Guide RP2040 voice module STM32 1.5inch LCD ESP32 S3 Development Board 1.47 inch LCD Touch Screen 1.47inch Display 172×320 SD AXS5106L JD9853 Raspberry Pi 5 PCIe to 4 Port 2.5G Gigabit Ethernet Adapter RJ45 Ports Pi5 Raspberry Pi 6.25 inch DSI Display MIPI LCD (B) Capacitive TouchScreen 720x1560 LuckFox Pico User Guide