Campbell-scientific Sentek EnviroSCAN EasyAG SDI-12 Manual v 3.4 Uživatelský manuál Strana 17

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EnviroSMART & EasyAG SDI-12 Probe Manual
Copyright © 1991 2003 Sentek Pty Ltd All rights reserved Page 12
Note: Refer to notes on Start Measurement (aM! or aMn!) command above.
Soil Moisture Configuration Values (aC4!, aC5! and aC6!)
The Start Concurrent Measurement commands (aC! or aCn!) aC4!”, aC5! and aC6! allow all soil
moisture A, B and C constants to be sampled with a single command. Values are gathered in the same
way as for the Start Measurement command (aM! or aMn!), but the Send Data command (aDn!) may
return up to eight(8) values.
A Constants are retrieved with the Start Concurrent Measurement command (aC! or aCn!) aC6!”
Command Response
aC6! A00016<CR><LF>
The response indicates that 16 A constant values will be available immediately. The controlling device
will then issue Send Data commands (aDn!) to read the values.
Command Response
aD0! a+000.1957+000.1957+000.1957+000.1957+000.1957
+000.1957+000.1957+000.1957<CR><LF>
aD1! a+000.1957+000.1957+000.1957+000.1957+000.1957
+000.1957+000.1957+000.1957<CR><LF>
B Constants are retrieved with the Start Concurrent Measurement command (aC! or aCn!) aC5!”
Command Response
aC5! A00016<CR><LF>
The response indicates that 16 B constant values will be available immediately. The controlling device
will then issue Send Data commands (aDn!) to read the values.
Command Response
aD0! a+000.4040+000.4040+000.4040+000.4040+000.4040
+000.4040+000.4040+000.4040<CR><LF>
aD1! a+000.4040+000.4040+000.4040+000.4040+000.4040
+000.4040+000.4040+000.4040<CR><LF>
C Constants are retrieved with the Start Concurrent Measurement command (aC! or aCn!) aC4!”
Command Response
aC4! A00016<CR><LF>
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