H-3521 – Xylem H-3521 User Manual

Page 33

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H-3521

SDI-12 Command and Response Protocol 5-3

Example of a H-3521 "aM1!" command:
Command

Response

Time

Values

Description

"aM1!"

"a0044<cr><lf>"

4 sec

4

Make measurement

Subsequent Command

Response

"aD0"

a+AA.AAAA+BB.B+CCCCCCC.CC+DDDDDDD.DD<cr><lf>


Where:

AA.AAAA

= Pressure (PSI)

BB.B

= Temperature (C)

CCCCCCC.CC

= Raw Pressure A/D Counts

DDDDDDD.DD

= Raw Temperature A/D Counts

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