Multicast transmissions

XBee modules use multicast transmissions to broadcast a message to destination devices that have active endpoints associated with a common group ID. The device handles an Explicit Addressing Command Request - 0x11 using the Multicast Tx Option (0x08) as a multicast transmission request.

Address resolution

The 64 bit destination address value does not matter and we recommend that it be set to 0xFFFFFFFFFFFFFFFF. Set the 16 bit destination address value to the destination groupID.