R309 AT Commands
©2015 Telegesis (UK) Ltd - 44 - AT Command Manual (Rev 3.09)
+UCAST – Transmit A Unicast
AT+UCAST:<address>=<data>
Example
AT+UCAST:000D6F0000012345=Hello
Where
<address>
can
be
the
remote
node’s
EUI64, Network address or address table index
Note
Unicasts can be addressed either by referencing
the recipient’s EUI64, Network address or an
entry in the address table.
The maximum payload is 82 bytes. It is reduced
by 8 bytes when appending the EUI to the
network header (default) and also it is reduced
by 2 bytes per hop in case a source route is
known. The latter event can neither be
suppressed nor foreseen.
Up to 10 unicasts may be in flight at one time
Unicasts can travel up to 30 hops
Use on
All Devices
SEQ:XX
OK
or
ERROR:<errorcode>
Where <errorcode> represents the error code
explained in section 3.
Prompt
ACK:XX
or NACK:XX
Up to 82 bytes are sent to the node up to 30
hops away. On successful transmission the
user is given the transmission’s sequence
number followed by “OK”. The user is then
prompted “ACK” on receipt of an
acknowledgement or “NACK” in case the
message was not acknowledged. A NACK does
not guarantee that the message has not reached
its destination.
If bit B of S10 is set, “SEQ”, “ACK” and “NACK”
are not reported. “OK” means that the message
has been acknowledged by the destination.
Prompt
UCAST:[<EUI64>,]<length>=<data>
or
UCAST:[<EUI64>,]<length>=<data>,
<RSSI>,<LQI>
Where <EUI64> is the address of the sender
and <length> is the length of the message in
hexadecimal. The EUI64 is only displayed if it is
part of the network header (set bit 0 of S10 to
disable attaching the EUI64 to outgoing
messages). RSSI and LQI are shown if bit 6 of
S0F is set.
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