Communication between two XBEE not working!

Projects Networking, Protocols, and Devices
1

Hi,

I have Arduino Leonardo with Wireless Proto shield and two XBee modules.
One module is Coordinator(AT), second module is end device(AT).

Coordinator connected to PC through usb xbee adapter. End device connected to Arduino Shield.
If I tried to send serial data thought Xbee, I not received any data on PC.

But if I use Arduino Nano(with Nano IO Shield) instead of Leonardo always OK!
I tried this with IS Shield and XBee Shield.

Code something like this)

void setup() {
Serial.begin(9600);
}

void loop() {
Serial.println("Test");
delay(100);
}

Can anybody help me?

Thank you)