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I/O D Cabling 3
SDI count
SDI offset
SDI available
SDI data block
The frame is similar to the standard DATA frame, but has the SDI sensor values
appended after the standard analog values. The frame type 60 contains SDI-12
data only.
SDI-12 specific parameters are explained below:
You can also see the example below.
For additional information about the significance of the SDI address, method, and
index, please refer to the SDI-12 standard specification (http:// www.sdi-12.org).
The digibyte is similar to the DATA command:
The remote version is limited to a single frame.
R
GET only.
EMARKS
R
Yes.
EMOTE
E
12800 datasdi
XAMPLE
12800 datasdi 16 5 2003 20 14 49 44 60 255 255 127 87 9 0 9 3
0 0 74.379401 3 0 1 68.117003 3 0 2 58.832397 3 0 3 51.611795
3 0 4 38.346400 3 0 5 19.800799 3 0 6 14.895999 3 0 7
3.553500 3 0 8 0.037200 2953 0
#
Fig. 18:
•
SDI count —the number of 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 —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 equal.
•
SDI values —a number of SDI-12 data blocks, each consisting of four
values:
•
SDI address
•
SDI method
•
SDI index
•
SDI value (floating point)
b7
SC
Dig6 Dig5 Dig4 Dig3 Dig2 Dig1 Dig0
SC-Battery Charge (0-off, 1-on)
Frame 60,61 (left) and 62 (right) description
Dig n – Digital I/O n
Fig. 19:
The Digibyte
Performing Advanced Functions
b0
47
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