Arduino Due with Razor 9DOF

Hardware Arduino Due
1

I connect my Razor 9DOF in my arduino board using the serial pin (TX/RX), but I do not see anything!

I have connected the pins as well:
RAZOR <--> ARDUINO
TX0 <--> RX1(19)
RX1 <--> TX1(18)
3.3V <--> 3.3V
GND <--> GND

And this is my code for test:

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial1.begin(57600);

}

void loop() {
  // put your main code here, to run repeatedly: 
  while (Serial1.available() > 0) {
    Serial.println(Serial1.read());
  }
  
}

But I do not see anything in the serial monitor(9600).

Thanks!!

2