SENA ProBee-ZE20S - Manual (Page 40)

40 ProBee-ZE20S User Guide Rev.1.10
Set the transmission mode to multicast mode. The device should be reset to apply the mode.
ATS36=n, where n is the radius.
ATS37=n, where n is the number of hops through nonmembers.
Set data relay and forwarding options. Please refer to the 9 S-Registers for more details.
Note: ZigBee compliance rules prevents flooding of the network by limiting the network to a maximum of 9
broadcasts over 8 seconds. Attempts to submit additional broadcasts beyond this should result in the
transmission error. This is approximately one broadcast per second. It is, however, recommended to
broadcast one packet over 2 seconds for safe transmission. Broadcast transmission failure also causes
retransmission which is affected by transmission timeout(S33) and transmission retries(S32). Because
frequent retransmissions may cause to break the broadcast limitation, it is recommended to set more than
1000 for transmission timeout(S33) and set as small as possible for transmission retries(S32).
Multicast data transmission is implemented on top of the network broadcast mechanism, so it is subject to
the same rules.
Example)
AT+DESTGROUPID=0001<CR> # Set the destination group ID
OK<CR> # Response
ATM<CR> # Enter the multicast mode using destination group ID
OK<CR> # Response
Send multicast msg # Put the multicast message
+++ # Leave data mode
OK<CR> # Response
ATM0001<CR> # Enter the multicast mode using 16-bit group ID
OK<CR> # Response
Send multicast msg # Put the multicast message
+++ # Leave data mode
OK<CR> # Response
AT+DESTGROUPID=0001<CR> # Set the destination group ID
OK<CR> # Response
AT+TRANSMITMODE=2<CR> # Set transmission mode to destination group ID
OK<CR> # Response
ATZ<CR> # Apply to change
OK<CR> # Response