In-Situ Aqua TROLL 400 Modbus and SDI-12 Reference Guide - Manual (Page 19)

Name Command Response
Set Specific
Conductivity Alpha
aXCApd.d!
aOK<CR><LF> or
aERROR<CR><LF>
pd.d = alpha
p = polarity sign (+ or -)
d = digits (1 to 7)
. = decimal point (optional)
Read Specific
Conductivity Alpha
aXCA! apd.d<CR><LF>
pd.d = Alpha
Set Specific Conductivity
Reference Temperature
aXCTpd.d!
aOK<CR><LF> or
aERROR<CR><LF>
pd.d = reference temperature
p = polarity sign (+ or -)
d = digits (1 to 7)
. = decimal point (optional)
Read Specific Conductivity
Reference Temperature
aXCT! apd.d<CR><LF>
pd.d = reference temperature
Set TDS Units
aXDUnnn!
aOK<CR><LF> or
aERROR<CR><LF>
nnn = the TDS units ID
Three digits are required.
Read TDS Units
aXDU! annn<CR><LF>
nnn = TDS units ID
Set TDS Factor
aXDFpd.d!
aOK<CR><LF> or
aERROR<CR><LF>
pd.d = conversion factor
p = polarity sign (+ or -)
d = digits (1 to 7)
. = decimal point (optional)
Read TDS Factor
aXDF! apd.d<CR><LF>
pd.d = conversion factor
Restore Conductivity
Factory Calibration
Send Data
aXCFC!
aD0!
a0011<CR><LF>
One result is available in 1 second for reading by
the Send Data command. Restores conductivity
sensor cell constant to its factory default. No
change to other parameter settings.
a+s<CR><LF>
s = command status, 1 = command successful, 0 =
command failed.
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