Apogee Instruments S2-431 Manuel du propriétaire - Page 13
Parcourez en ligne ou téléchargez le pdf Manuel du propriétaire pour {nom_de_la_catégorie} Apogee Instruments S2-431. Apogee Instruments S2-431 18 pages. Red - far-red sensors
Imprimer la page
The data values are separated by the sign "+", as in the following example (0 is the address):
Command
Sensor Response
0M0!
00011<cr><lf>
0D0!
0+2.0+20.0<cr><lf>
0M1!
00012<cr><lf>
0D0!
0+200.0+200.0<cr><lf>
0M2!
00012<cr><If>
0D0!
0+20.0+20.0<cr><If>
0M3!
00013<cr><If>
0D0!
0+35.2<cr><If>
-2
where 200.0 is µmol m
Concurrent Measurement Command: aC!
A concurrent measurement is one which occurs while other SDI-12 sensors on the bus are also making
measurements. This command is similar to the "aM!" command, however, the nn field has an extra digit and the
sensor does not issue a service request when it has completed the measurement. Communicating with other
sensors will NOT abort a concurrent measurement. Data values generated in response to this command are stored
in the sensor's buffer for subsequent collection using "D" commands. The data will be retained in the sensor until
another "M", "C", or "V" command is executed:
Command
Response
aC! or aC0!
a00101<cr><lf>
a00102<cr><lf>
aC1!
a00102<cr><lf>
aC2!
a00103<cr><lf>
aC3!
aCC! or aCC0!
a00101<cr><lf>
a00102<cr><lf>
aCC1!
a00102<cr><lf>
aCC2!
a00103<cr><lf>
aCC3!
where a is the sensor address ("0-9", "A-Z", "a-z", "*", "?") and C is an upper-case ASCII character.
For example (0 is the address):
Command
Sensor Response
0C0!
000101<cr><lf>
0D0!
0+2.0+20.0<cr><lf>
0C1!
000102<cr><If>
0D0!
0+200.0+200.0<cr><lf>
0C2!
000102<cr><lf>
0D0!
0+20.0+20.0<cr><If>
0C3!
000101<cr><If>
0D0!
0+35.2<cr><If>
-2
where 200.0 is µmol m
-1
s
.
Response to 0D0!
Returns Ratio (Red / Far-red), Far-red Percentage ((FR / total) x 100) values
Returns calibrated lower wavelength output and calibrated upper wavelength
output in µmol m⁻² s⁻¹
Returns lower wavelength detector millivolts and upper wavelength detector
millivolts
Returns angle offset from vertical in degrees. (0 degrees if pointed up, 180
degrees if pointed down.)
Returns Ratio (Red / Far-red), Far-red Percentage ((FR / total) x 100) values
w/CRC
Returns calibrated lower wavelength output and calibrated upper wavelength
output in µmol m⁻² s⁻¹ w/CRC
Returns lower wavelength detector millivolts and upper wavelength detector
millivolts w/CRC
Returns angle offset from vertical in degrees. (0 degrees if pointed up, 180
degrees if pointed down.) w/CRC
-1
s
and 20.0 is mV.
Sensor Response when data is ready
0<cr><lf>
0<cr><lf>
0<cr><If>
0<cr><If>