There are two ways of specifying the sender and destination address: long address and short address.
Long address
Specifies the 32bit module serial number (32bit) of the TWELITE. The address can be obtained by ToCoNet_u32GetSerial() API.
It is also the 7-digit hexadecimal S/N (serial number) displayed on the shield can of the TWELITE module plus 0x80000000. For example, a serial number of 1012ABC would be 0x81012ABC.
When the destination is specified as long, the payload size of the packet becomes small. (Maximum length of a packet)
IEEE802.15.4 standard uses 64bit MAC address. 64bit MAC address is specified based on 32bit module address.