Network commissioning and diagnostics Node discovery
Digi XBee3® 802.15.4 RF Module User Guide
74
until NT expires, even if the requested node responds immediately. After NT expires, it gives a
successful response, even if the requested node did not respond. To enable this behavior to be
equivalent to the Legacy 802.15.4 module, set bit 1 of the C8 parameter.
Destination Node
DN command with anNI command string parameter sends out a broadcast containing the NI string
being requested. The responding node with a matching NI string sends its information back to the
requesting node. The local node then sets DH/DL to match the address of the responding node. As
soon as this response occurs, the command terminates successfully. If operating in Command mode,
an OK string is output and Command mode exits. In API mode another AT command may be entered.
If an NI string parameter is not provided, the DN command terminates immediately with an error. If a
node with the given NI string doesn't respond, the DN command terminates with an error after NT
times out.
Unlike ND (with or without an NI string), DN does not cause the information from the responding node
to be output; rather it simply sets DH/DL to the address of the responding node. If the responding
node has a short address, then DH/DL is set to that short address (with DH at 0 and DL set to the
value of MY). If the responding node has a long address (MY is 0xFFFE), then DH/DL are set to the
SH/SL of the responding node.
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