Campbell SnowVUE 10, Руководство по эксплуатации продукта

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Table 8-2: SDI-12 commands
SDI-12
1
command
Values returned or
function
Units
Max. sensor
response
time
a
A
b
!
where
b = new address
Change address command
a
XRM!
Returns the distance to ground
setting; it returns four decimal
places
m
a
XWM+
D.DD
!
where
D.DD = distance in meters
Extended command that sets
the distance-to-ground
parameter, in meters, in the
SnowVUE 10; the distance must
be no more than four decimal
places
m
a
XRT!
Returns the reference
temperature with a value that
remains the same unless power
is cycled or a new temperature
value is sent; the default value
on power up is 0 °C.
° C
a XWT+ CC.C !
where
CC.C = temperature in degrees
Celsius
Sets reference temperature,
which must be a maximum of
one decimal place
° C
a
XLOADOS
rrrrr SNOWVUE_
nnn.xobj
!
where
rrrrr = baud rate
SNOWVUE_nnn.xobj = OS
name
Sends the new OS to the sensor;
refer to
Updating the operation
system (OS) (p. 19)
1
a is the SDI-12 address. In the SDI12Recorder() CRBasic instruction, the command parameter does not include
the SDI-12 address because the address is a separate parameter.
SnowVUE 10 Sonic Ranging Sensor 18