Table 8-2: SDI-12 extended commands
SDI-12
command
1
Values returned or function
Comments
a
XWA+
xx.xx
!
(where
xx.xx
= current rain
value)
Resets the total adjusted rain to a
current value and returns the number
of values.
Follow this command with the
a
D0!
command to get the new adjusted
rain.
Used when replacing the
RainVUE-series midway
through a water year.
a
XWRESET!
Resets all accumulators.
a
XWD!
Resets RTC or 24 hour tick counter to
midnight.
This command is a simple
way for data loggers to sync
the time clock without
having to format the SDI-12
command.
a
XWTILT!
Zero tilt sensor (XWTILT) status;
returns a status flag indicating the
success of the leveling process.
s = 0 Success
s = 1 Error (cannot zero the sensor)
Mechanically balance the
sensor, then issue this
command.
a
XRTILT!
Reads the tilt angle (degrees) of
the tilt sensor.
When this command is
issued right after the sensor
is zeroed, it should return
0.00 degrees, verifying the
RainVUE-series is level.
a
XTEST!
Returns two lines of header
information, then returns updated
data at every tip and every 2 seconds
or until a break is detected with each
line terminated with a <CR><LF>.
Command is only intended
for testing and debugging
the sensor; refer to
for detailed information
about using this command.
a
XHELP!
Lists the standard measurement and
extended commands supported by
the RainVUE-series.
Command is only intended
for testing and debugging
the sensor.
RainVUE-Series SDI-12 Precipitation Sensors
19
