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R
ETURNS
The date/time specifies the first slot to be retrieved that is strictly
"younger" than the specified time stamp.
The data block returned will typically contain a number of data
frames. The structure of a block is as follows:
dd mm yyyy hh mm ss si ft rfin rfout db batt sdih
sdib1 sdib2 ... sdibn cs
where:
•
dd mm yyyy is the date
•
hh mm ss is the time
•
si is the size of the frame (variable for the SDI frames)
•
ft is the frame type (60)
rfin is the RFin RSSI value
•
•
rfout is the RFout RSSI value
•
db is the digibyte value
•
batt is the battery voltage value
•
sdih ist the SDI-12 header
•
sdib1, sdib2 ... sdibn are the SDI-12 sensor quadruples
•
cs is a 16-bit checksum obtained by summing the bytes and
discarding the carries over
included in the checksum).
The composition of the data block of such a frame (the values
marked as sdih, sdib1... sdibn) is depicted in Figure 16.
Using terminal commands
0xFFFF
(float values are not
35
CHAPTER 3
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