I have a pair of xbee pro s2b set up with node ID = 2005
DH and DL addressed correspondingly
ZS=0, i also tried ZS=2 for both
the two modules just can't seem to find each other, i use the adafruit xbee adapter as my breakout board and a usb to serial module using the prolific chipset.
oh and in the new xctu interface, a logo appears on the radio module connected e.g. letter C for coordinator, interestingly, the letter R for router only appeared once and I never had it to show up again.