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36
CHAPTER 3
Performing Advanced Functions
R
EMARKS
SDI value (floating point)
SDI value (floating point)
SDI value (floating point)
Figure 16. SDI-12 Data Frame, part of type 60 Frame
The frame is similar to the standard DATA frame, but has the SDI
sensor values appended after the battery value. The frame type 60
contains SDI-12 data only.
SDI-12 specific parameters are explained below:
•
SDI count — represents the number of configured SDI values
following in the SDI data block.
•
SDI offset — the offset in the SDI-12 frame. Usually it is 0 (no
offset is used).
•
SDI available — is the number of SDI-12 sensor values
effectively returned. The difference between the SDI count and
SDI available indicates missing sensors (down or damaged).
Usually these two values are identical.
•
SDI values — this is a number of SDI-12 quadruples:
•
SDI address
•
SDI method
•
SDI index
•
SDI value (floating point).
See also the example below .
Note: The remote version is limited to a single frame.
GET only.
SDI count
SDI offset
SDI available
SDI address
SDI method
SDI value #1
SDI index
SDI address
SDI method
SDI value #2...
SDI index
SDI address
SDI method
SDI value #n
SDI index
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