Advanced application features Network commissioning and diagnostics
XBee®-PRO 900HP/XSC RF Modules
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node which sent the FN command to the target node. The device outputs the response packet on the
initiating radio in the same format as a network discovery frame.
Link reliability
To install a successful mesh network, you must be able to determine where to place individual XBee
devices to establish reliable links throughout the mesh network.
Network link testing
To determine the success rate of many transmissions, send unicast data through the network from
one device to another to measure the performance of the mesh network.
To simplify link testing, the modules support a loopback cluster ID (0x12) on the data endpoint (0xE8).
The device transmits any data sent to this cluster ID on the data endpoint back to the sender as
illustrated in the following figure:
The configuration steps to send data to the loopback cluster ID depend on the AP setting.
AT configuration (AP=0)
To send data to the loopback cluster ID on the data endpoint of a remote device, set the CI command
value to 0x12. Set the SE and DE commands set to 0xE8 (default value). Set the DH and DL commands
to the address of the remote. After exiting command mode, the source device transmits any received
serial characters to the remote device, and returned to the sender.
API configuration (AP=1 or AP=2)
Send an Explicit Addressing Command API frame (0x11) using 0x12 as the cluster ID and 0xE8 as the
source and destination endpoint. The remote device echoes any data packets it receives to the
sender.
Link testing between adjacent devices
To test the quality of a link between two adjacent nodes in a network, use the Test Link Request
Cluster ID send a number of test packets between any two nodes in a network.
Initiate a link test using an Explicit TX Request frame. Address the command frame to the Test Link
Request Cluster ID (0x0014) on destination endpoint 0xE6 on the device to execute the test link. The
Explicit TX Request frame contains a 12 byte payload with the following format:
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