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Range Testing with a ZigBee Mesh Network

This test is designed to allow the user to quickly establish a functional ZigBee Networking Range Test.

Minimum required amount of hardware to run a ZigBee Range Test:


Open up two X-CTU sessions. Under the PC Settings tab select a different COM port for each session. Move to the Terminal tab. This will open the two separate COM ports for each terminal. From the Terminal tab, AT command can be sent to the radio attached to the specificed COM port to change settings. The terminal will be used to send AT commands to correctly configure the Router and Coordinator parameters.

Note: In the example below, sequences in blue are information sent to the RF module as seen from an X-CTU Terminal screen. Sequences in red are representative of the RF module''''s responses as shown from X-CTU.

On the Coordinator type the following AT command string:

+++

OK

ATNICOORD

OK

ATWR

OK

ATCN

OK


On the Router(s) type the following AT command string:

+++

OK

ATNIREMOTEx // (Where x is 1 or 2 for the corresponding Router)

OK

ATWR

OK

ATCN

OK


Now set the COORD to communicate with REMOTE1, on the Coordinator type:

+++

OK

ATND // (This will report back all nodes on your network)

OK

ATDNREMOTE1 ... // (The Extended and Network addresses of REMOTE1 are reported)

OK // (After a DN the XBee exits AT command mode automatically)


You will notice that REMOTE1 & REMOTE2 are automatically addressed to send data back to the COORDINATOR. Run a range test with the loopback adapter connected up to REMOTE1, you should be getting good results.

Now you are ready to add Mesh Networking to your range test:


Notice that it takes several seconds to establish a link (thats why we changed Data receive timeout), but after the first pause the Range Test should resume normal speed. This is because initially the COORD had to perform a Route Discovery. If you turn off REMOTE2 the Range test should start to fail.



NOTE: Apart from this method, Zigbee modules provide one more method to perform range test with help of 'Cluster ID' parameter. Click here for details of this method.

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