WattNode and ModBus

Projects Programming
6

So I did a bit more reading, and tried a few more things to read the response from the WattNode, but not luck. I'm checking with Serial.available(), but still am not seeing anything.

int EN = 2;
int incomingByte = 0;   // for incoming serial data

void setup() {
  pinMode(EN, OUTPUT);
  Serial.begin(9600);
  digitalWrite(EN,HIGH);
}

void loop() {
  
  for (int i=0; i<5; i++) {
    digitalWrite(EN,HIGH);
    Serial.write((byte)0x01);
    Serial.write((byte)0x03);
    Serial.write((byte)0x05);
    Serial.write((byte)0x14);
    Serial.write((byte)0x00);
    Serial.write((byte)0x16);
    Serial.write((byte)0x84);
    Serial.write((byte)0xCC);
    delay(100);
    digitalWrite(EN,LOW);
  }
  delay(2000);
  digitalWrite(EN,LOW);
  // send data only when you receive data:
  if (Serial.available() > 0) {
    // read the incoming byte:
    incomingByte = Serial.read();
  
    // say what you got:
    Serial.print("I received: ");
    Serial.println(incomingByte, DEC);
  }
  digitalWrite(EN,HIGH);
  delay(1000);
}