Table 2.

Communication data frame structure.

Sequential Number	Value	Purpose
0	7E	Start delimiter
1–2	00–10	Frame length
3	17	Frame type: AT Command
4	00	Frame ID: no reply needed
5–12	000000000000FFFF	Sending broadcast
13–14	FFFE	Destination Network: unknown
15	02	To apply changes
16–17	44–02	Bit mask indicating which pins of the XBee module are enabled for digital output (D2 in this case)
18	05	To set D2 pin to be digital out High
19	70	Checksum