SENA ProBee-ZE20S - Manual (Page 39)

39 ProBee-ZE20S User Guide Rev.1.10
AT+TRANSMITMODE=4 # Set transmission mode to sink node in the network
OK # Response
ATZ # Apply to change
OK # Response
Send unicast msg # Put the unicast message
+++ # Leave data mode
OK # Response
4.2.2 Multicast Data Mode
Multicast data mode can be used for continuous data transmission to a particular group of multiple
devices. Every ZE20S belongs to a certain group by predetermined group ID when forming or joining the
network.
Multicast data mode can be entered using either ATM or AT+TRANSMITMODE=2. If ATM command is
used, the device will enter the multicast data mode immediately and keep it until escaped using “+++” or
reset by ATZ. If the device is reset, it will not enter the multicast data mode but command mode in this
case.
On the other hand, if AT+TRANSMITMODE=2 is used to enter the multicast data mode, the device enters
the multicast data mode again whenever the device is reset. To disable the multicast data mode, escape
the data mode first by using “+++” string and use AT+TRANSMITMODE=0 and reset the device to apply
the setting permanently.
AT commands used for the multicast data mode are as below.
AT+GROUPID= or AT+GI=, where is 16-bit group ID for multicast data mode.
Set Group ID of the device. The device will receive the multicast data sent to this Group ID.
AT+DESTGROUPID= or AT+DG=, where is 16-bit destination group ID for
multicast data mode.
Set destination Group ID of the device.
ATM
Set multicast data mode to preconfigured destination group ID without reset.
ATM
Set multicast data mode to group ID and can be 16-bit ID.
AT+TRANSMITMODE=2 or AT+TM=2