[Arduino IDE demo source code for KC868-E16S]--#06-KC868-E16S-RS485
Code:
/*WWW.KINCONY.COM */
/*KC868-E16S CODE OF RS485*/
void setup(){
Serial2.begin(9600,SERIAL_8N1,13,32);// IO13 is 485RX IO32 is 485TX
}
void loop() {
Serial2.println("abcd123456789551");// send abcd123456789551
}