Campbell RainVUE SDI-12 Series, Руководство по эксплуатации продукта

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data can be collected. After receiving the service request or waiting the indicated time, the data
logger will send the
D!
command to collect the data.
The
C!
command follows the same pattern as an
M!
command with the exception that it does
not require the data logger to pause its operation until the values are ready. Rather, the data
logger retrieves the data with the
D! command on the next scan through the program. Another
measurement request is then sent so that data are ready on the next scan.
NOTE:
SDI-12 sensor support (p. 29) describes the SDI-12 commands. Additional SDI-12 information
is available at www.sdi-12.org .
Table 8-1: SDI-12 measurement commands
SDI-12 command
1
Values returned Units Comments
a
M!
, a
MC!
,
a C! , a CC!,
a
R0!
, a
RC0!
1. Intensity corrected
accumulation since last
M
,
MC
,
C
,
CC
,
R0
, or
RC0
command
was issued.
2. Number of raw bucket tips
since last measurement
3. Total intensity corrected
accumulation since reset
4. Average precipitation intensity
since last measurement
5. Maximum (peak) intensity
since last measurement
1. mm or inch
2. Counts
3. mm or inch
4. mm/hr or in/hr
5. mm/hr or in/hr
Command
resets
accumulators
a
M1!
, a
MC1!
,
a
C1!
, a
CC1!
,
a RC1!
1. Supply voltage
2. Temperature
3. Sensor level
4. Time since last measurable
precipitation event
5. Lithium battery voltage
1. VDC
2. °C or °F
3. Degrees from
normal, flat
4. Days
5. VDC
Command
resets
accumulators
RainVUE-Series SDI-12 Precipitation Sensors 13