Strange API Frames

These frames don’t make any sense to me. In particular, the manual does not mention any frames with id 3F. The 16bit id does not match the id of the XBee which sent the data. Also, the frame id, the two bytes of the 16bit address, and the checksum all equal 3F, which seems like more than a strange coincidence. What is going on here?

I have D3 configured as a digital input on my XBee. I then read this frame from an XStick plugged into another USB port on my computer.

7E
0
12
3F
0
13
3F
0
40
77
33
47
3F
3F
1
1
0
8
0
0
8
3F

Hi,

Use digi API Frame Maker to generate the frames. Download this tool from the below link, ftp://ftp1.digi.com/support/utilities/digi_apiframes.htm