• 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: Milk-V Duo Ethernet ESP32-S3 Development Board 4 inch LCD TouchScreen Display 480x480 RS485 /SHT20 /Relay For Arduino LVGL 86 TVbox here User Guide Electronic EYE 0.71 inch Round Double LCD Display Dual Screen For Arduino Raspberry Pi ESP32 Pico STM32 Jetson Orin Uninterruptible Power C For Simultaneously Charging and Discharging Raspberry Pi PICO LoRa Tuya AI Voice Robot T5-E1 1.75 inch Round AMOLED TouchScreen GPS For XiaoZhi Development Board Raspberry Pi Pico 2 RP2350 CAN Onboard XL2515 CAN Controller RP2350A E-Paper ESP32 1.9inch LCD Raspberry Pi Buzzer Raspberry Pi Monitor Official Original DisplayScreen 15.6 inch LCD Full HD 1920x1080 15.6inch NanoKVM-Lite Raspberry Pi 5 Raspberry Pi 1.5inch LCD Sipeed NanoCluster Mini Cluster Board mini data center For Raspberry Pi CM45 / Computer /LM3H /M4N Jetson Nano Development Raspberry Pi 500 (US) refined personal computer.built into a high-quality Keyboard Raspberry Pi 5 PWM Fan Raspberry Pi 10.85 inch e-Paper ink screen display black white 1360×480 For Arduino /Jetson /STM32 /ESP32