int incomingByte = 0;   // for incoming serial data
int ledPin = 10;   // select the pin for the LED
int val = 6000;	 // variable to store the data upper limit

void setup() {
  pinMode(ledPin,OUTPUT);    // declare the LED's pin as output

  Serial.begin(9600);     // opens serial port, sets data rate to 9600 bps
}

void loop () {
  // send data only when you receive data:
        if (Serial.available() ) ;83 84 65 82 84 )
        {
                // read the incoming byte:
                incomingByte = Serial.read();
  // blink the LED that number
    for(int i=0; i<val; i++) {
     digitalWrite(ledPin,HIGH);
     delay(150);
     digitalWrite(ledPin, LOW);
     delay(150);
  }
}
}