S.O.S a bottle into the sea *******Communication problem *******************************

I connect my XBEE PRO S3B on my PC via a FTDI cable. The Xbee Software can’t recognise the XBee module. My FTDI driver is well installed on my pc .

With my scope i can see the data enter in the data in of the xbee but no data athe output pin data out …

Please help !!