Campbell Scientific CS700 Tipping Bucket Rain Gage and CS700H Heated Rain Gage User Manual
Page 34
Appendix A. CS700H Operation
TABLE A-4. SDI-12 V1.2 COMPLIANT COMMAND SET –
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Name Command
Response
Break
Continuous
spacing for
at least 12
milliseconds
None
Acknowledge
Active
a!
a<CR><LF>
Send
Identification
aI!
allccccccccmmmmmmvvvxxx...xx<CR><LF>
(see Note 1.)
Change
Address
aAb!
b<CR><LF>
Address
Query
?!
a<CR><LF>
Start
Measurement
aM!
atttn<CR><LF> a0009 => (9 measurements in
0 secs)
Send Data
aD0!
(Response from Measurement and Concurrent
commands; see to Note 4)
a<value1><value2> ….. <value8><CR><LF>
value1 = Ambient temperature (°C or °F)
value2 = Block temperature (°C or °F)
value3 = Units (0=°C : 1=°F)
value4 = 0=no snow : 1=snow detected
value5 = 0=Snow sensor disabled : 1=enabled
value6 = 0=Heater Off : 1=Heater elements on
value7 = 0=Automatic Control : 1=Manual
Control
value8 = 0=Cycle Disabled : 1=Cycle Enabled
value9 = Low Power Heater cycle time left
(mins)
Continuous
Measurement
aR0!
Same reply as the D command
Start
Verification
aV!
Atttn<CR><LF> (see Note 2)
Start
Concurrent
Measurement
aC!
atttnn<CR><LF> a00009 =>(9 measurements
in 0 secs)
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