Xylem H-335 - Manual (Page 19)

H-335
SDI-12 Command and Response Protocol 2-3
Example of a H-335 "aM1!" command:
Command Response Time Values Description
"aM1!" "a0036<cr><lf>"
3 sec 6 Make measurement
Subsequent Command Response
"aD0" a+AA.AA+BB.BBB+CCCC+DDDD+EEEE+FF.FF<cr><lf>
Where:
+AA.AA = User Angle
+BB.BBB = Sensor Angle
+CCCC = Raw A/D Positive Count (±8192)
+DDDD = Raw A/D Negative Count (±8192)
+EEEE = Raw A/D Count (±16384)
+FF.FF = Sensor Temperature (C)
Example of a H-335 "aM2!" command:
Command Response Time Values Description
"aM2!" "a0031<cr><lf>" 3 sec 1 Make measurement
Subsequent Command Response
"aD0" a+AA.AA<cr><lf>
Where:
+AA.AA = Gate Height
“aM1" Command
“aM2" Command