Example Code for Arduino-USB to RS485 Transformation

Hardware Preparation

Please refer to the hardware connection above(but there is no need to install library).

Software Preparation

• Arduino IDE

Wiring Diagram

Sample Code

*
This code realizes the function to transform Leonardo USB to 485. And you can also test it with other DF USB to 485 tools.
*/
void setup() {
  Serial.begin(19200); //Initializing Serial (i.e. USB serial)
  Serial1.begin(19200);//Initializing Serial
}
void loop() {
  while (Serial1.available()) {
    Serial.write(Serial1.read());//If Serial1 receives data, then Serial will output it.
  }
  while (Serial.available()) {
    Serial1.write(Serial.read());//If Serial receives data, then Serial1 will output it.
  }
  delay(1);//Short delay to avoid USB-COM instability
}

Host Computer Software

Click to download TC01 measurement tool.