Manual

User manual/ Technical information
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The 45 Page total 50
exit the low-power working state.
Start Measurement
with CRC
aMC!,aMC1!...aMC9!,aRC0!...aRC9!
Send 0RC0!
Response 0+26.52+67.73+100280+35JKy
Description
To enhance the error detection capability of the SDI-12 protocol, "start measurement
command 0M!", "extended measurement command 0M1!..0M9!" and "continuous
measurement command 0R0!...0R9!" can add 16-bit cyclic redundancy check. Add the
character C after the command character M or R of these commands to form a new command:
aMC!,aMC1!...aMC9!,aRC0!...aRC9!.
For the calculation of CRC-16, please refer to the SDI-12 protocol v1.4 document.
Clear accumulated
rainfall command
0XCRA!
Send 0XCRA!
Response 01<CR><LF>
Description
aN<CR><LF>
a Device address:0
N Clear success: 1
Clear failed: 0
Clear accumulated
rainfall duration
0XCRD!
Send 0XCRD!
Response 01<CR><LF>
Description
aN<CR><LF>
a Device address:0
N Clear success: 1
Clear failed: 0
4.3.2 SDI-12 Read
Wiring the SDI-12
Use USB to SDI-12 debugger to communicate with the device