Why does not these two devices communicate ?

Please look at the attached image.
These two devices should communicate thru “terminal” tab, or, using the range test.
but they don’t - I do not understand why.

(and it’s a skinned XP64 - not Vista)

Both radios are setup to communicate with the coordinator. If the DH and DL are set to zero they will only send data to the radio with Zigbee Coordinator function set. Change the DL on of the radios to FFFF and it should broadcast the message to all radios or set the DH to equal the SH of the reciveing radio and then set the DL to equal the SH of the recieving radio.

Thanks .

Message was edited by: AndreD