Simple Application

Use Setups

When the RS485 shield is installed on your Arduino controller, and then you will wire the RS485

shiled with USB-RS485 converter to connect terminals, namely: A pair of A, B on B, GND on GND,

then download the following sample code (Note: Downloading code, run / program mode switch

must hit the OFF position, otherwise it will lead to the download fails. When downloaded,it is

complete to ON, and the shield to normal use). Open serial monitor of Arduino IDE, find USB-RS485

converter corresponding serial port, send characters "V", you can see the LED status may change,

and reply "OK".