#include <SoftwareSerial.h>
SoftwareSerial mySerial(0, 1); // RX, TX

const char node = '1'; // network address for the node 1
const int ledPin =  13; // the number of the LED pin for Arduino UNO

int incomingByte;

void setup() {
  mySerial.begin(9600);//baud rate
  pinMode(ledPin, OUTPUT);
  pinMode(1, INPUT);
}

void loop() {
  if (mySerial.available() > 0) {
    digitalWrite(ledPin, HIGH);
    delay(200);
    digitalWrite(ledPin, LOW);
    delay(200);
    incomingByte = mySerial.read();
    if (incomingByte == node) {
      digitalWrite(ledPin, HIGH); // if data character mathes the node address the LED is on
      pinMode(1, OUTPUT); // open line Rx is output for a while
      mySerial.print("node ");  
      mySerial.println(node);
      pinMode(1, INPUT);
      delay(200);
      digitalWrite(ledPin, LOW);
    }
  }
}