8 Commands and responses
Table 8.7 –
continued from previous page
Column
Example value
Description
56-65
0001287103
Frequency reading.
A reading of
0000045000
would indicate a sensor frequency of 1Hz,
but the meter limits to 25kHz for later scaling of snow factor, so the
maximum value would be
1125045000
(25
kHz
×
45000).
A reading of
0000000000
would indicate total darkness, but the meter
limits time readings to 85 seconds maximum, so the darkest value
would be
0000000529
(
1
85
s
×
45000).
66-67
Carriage return (0x0d), Line feed (0x0a).
An example of the response is:
r, 06.70m,0000022921Hz,0000000020c,0000000.000s, 039.4C,0001287103
0123456789 123456789 123456789 123456789 123456789 123456789 12345
8.2.5 Unit information
Unit information command “
ix
” provides details about the software in the micro-controller.
The format of the response is:
Table 8.8: Unit information request response
Column
Example value
Description
0
i
Indicates that the unit information response is being returned.
2-9
00000002
Protocol number
(8 digits). This will always be the first 8 char-
acters (after the “
i,
” response). This value indicates the revision
number of the data protocol to/from the SQM-LU-DL-V. The pro-
tocol version is independent of the feature version.
11-18
00000003
Model number
(8 digits). The model value identifies the specific
hardware model that the firmware is tailored for.
20-27
00000001
Feature number
(8 digits). The feature value identifies software
features. This number is independent of the data protocol.
29-36
00000413
Serial number
(8 digits). Each unit has its own unique serial num-
ber.
37-38
Carriage return (0x0d), Line feed (0x0a).
An example of the response is:
i,00000002,00000003,00000001,00000413
0123456789 123456789 123456789 12345678
66
Unihedron SQM-LU-DL-V Operator’s Manual -
20211013
Summary of Contents for SQM-LU-DL-V
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