• 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 Raspberry Pi Prism Raspberry Pi Pico 2 RP2350A 1.54inch TouchScreen 1.54 inch ePaper Display Development Board 200×200 Raspberry Pi 5 DSI display X1004 USB camera 5MP IMX335 No Distortion Raspberry Pi 5 5V5A Power ESP32-S3FH4R2 Raspberry Pi Pico 2 RP2350B 2.8 inch LCD Development Board RGB Display Round TouchScreen 480x480 LVGL QMI8658 / SD / RTC Raspberry Pi 4 USB Audio Raspberry Pi 11.6 inch LCD HDMI /Type C Display In-Cell Capacitive TouchScreen 1768x828 For Jetson Nano/mini Computer PC ESP32-S3 Development Board 3.16 inch LCD display 3.16inch Screen SD slot 320x820 RGB LED ST7701 Raspberry Pi Pico 2 RP2350 CAN Onboard XL2515 CAN Controller RP2350A Mini Uninterruptible Power Supply module Supports charging And Power output at the same time 5V 2.5A WiFi Wireless ESP32 DDSM Motor Driver HAT For Direct Drive Servo Hub Motors For Raspberry Pi ESP32-S3 USB Dongle Raspberry Pi 4 Camera Raspberry Pi Pico 2 RP2350 1.28 inch Round LCD TouchScreen Development Board 240x240 Display QMI8658 6-Axis $17.9 Raspberry Pi DSI 800×480 RM520N GL 5G/4G/3G M.2 Moudle IoT EMBB For LTE-A/NSA/SA And GNSS For DFOTA /VoLTE For Quectel