Adcon A725 addSDI User Manual page 28

26
CHAPTER 3
Performing Advanced Functions
• si is the size of the frame
• ft is the frame type (39 for the A725)
• d1 d2 ... dn are the data values (the frame content)
• cs is a 16-bit checksum obtained by summing the bytes and
discarding the carries over
The A725 devices always responds with a type 39 data frame. The
composition of the data block of such a frame (the values marked
as d1, d2... dn) is depicted in Figure 14, while the digibyte is
depicted in Figure 15.
Figure 14. Frame 39 description
b7
SC Res
SC — Solar Cell (0–off, 1–on)
Figure 15. The Digibyte
The remote version is limited to a single frame. An example of such
a command is given below:
9999 DATA 9999 13/12/2006 19:46:00
9999 DATA
13 12 2006 19 46 23 13 39 255 255 3 0 0 89 0 0 0 0
0 0 0 0 0 0 0 0 2258 0
#
0xFFFF
RF incoming
RF outgoing
Digibyte
Pulse Counter CNT0, always 0
Pulse Counter CNT1, always 0
Battery
I/O A Cabling 1, always 0
I/O A Cabling 2, always 0
I/O A Cabling 3, always 0
I/O B Cabling 1, always 0
I/O B Cabling 2, aways 0
I/O B Cabling 3, always 0
Checksum
Res Res Res Res Res
b0
Res