I'm using XBee and XBee-PRO's ZB modules in network made of 1 coordinator and 4 end devices.
There has been a weird messages loss problem and now I seem to have found the possible cause. The PC program talking to coordinator is programmed to do the node discovery (ND AT command) periodically every 5 seconds but it seems that during discovery normal ZigBee messages can get lost.
There's a clear connection between the failure and ND because when i increased ND period to 1 minute then failures also started to occur around that time.
Furthermore - it's not just messages which don't arrive, it's also the ZigBee transmit status frame which miss.
I couldn't find any explanation to this in manual so may somebody (from Digi) explain this? Should it be so or am I doing something wrong?