Frame descriptions Register Joining Device - 0x24
Digi XBee® 3 Zigbee® RF Module
270
Frame data fields Offset Example
Remote command options 15 0x00
Number of addresses 16 0x03
Address 1 17 0xEE
18 0xFF
Address 2 (closer hop) 19 0xCC
20 0xDD
Address 3 21 0xAA
22 0xBB
Checksum 23 0x01
Register Joining Device - 0x24
Description
Use this frame to securely register a joining device to a trust center. Registration is the process by
which a node is authorized to join the network using a preconfigured link key or installation code that
is conveyed to the trust center out-of-band (using a physical interface and not over-the-air).
If registering a device with a centralized trust center (EO = 2), then the key entry will only persist for
KT seconds before expiring, or until the device joins the network where the key is cleared.
Registering devices in a distributed trust center (EO = 0) is persistent and the key entry will never
expire unless explicitly removed.
To remove a key entry on a distributed trust center, a 0x24 frame should be issued with a null key (key
field is absent from the frame). In a centralized trust center you cannot use this method to explicitly
remove the key entries.
The API 0x24 registration frame will accept all 0xFF's for the device address (EUI) with an install code
as a wild card. You can only register one entry at a time with the trust center in this manner with EUI
with all 0xFF's . Only after the KT time period expires can you enter an additional entry with EUI with
all 0xFF's... We do not recommend this method. A best practice is to specifically set the EUI for every
device with an install code.
Format
The following table provides the contents of the frame. For details on frame structure, see API frame
format.
Frame data
fields Offset Description
Frame type 3 0x24 Register Joining Device
Frame ID 4
Identifies the data frame for the host to correlate with a subsequent
response. If set to 0, the device does not send a response.
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