H-340 sdi – Xylem H-340SDI User Manual
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2-14 SDI-12 Command and Response Protocol
H-340SDI
Example of a H340SDI extended "Set Time" command:
Command
Response
Time Values
Description
-------------
---------------------
------- -------- -------------------------------
"aXST234537" "a0011
1 sec 1
Set time of day to 23:45:37
Subsequent Command
Response
---------------------------
------------------------------------
"aD0"
a+23+45+37
Example of a H340SDI extended "Get Daily Reset Time" command:
Command
Response
Time Values
Description
-------------
---------------------
------- --------
-------------------------------
"aXGDRT!"
"a0013
1 sec 3
Get daily reset time
Subsequent Command
Response
---------------------------
------------------------------------
"aD0"
a+HH+MM+SS
Where:
HH
= Hours (24 hour format)
MM
= Minutes
SS
= Seconds
2.16 Extended “Get Daily Reset Time” Command
The H-340SDI automatically resets the daily accumulations a certain time each day. For example,
one day may be calculated from 6:00 AM of one day to 6:00 AM of the next day. This command
reads the time of day at which the reset is scheduled.
Command
Response
Description
-------------
-------------------------
-----------------------------
"aXGDRT!"
"a0013
Read daily reset time
Where:
a
is the sensor address ("0-9", "A-Z", "a-z", "*", "?").
XGDRT
are upper case characters
This command takes 001 seconds to complete and places 3 values in the data buffer. Use the “aD0"
command to collect and view the data.