SonTek/YSI Argonaut-XR Technical Manual - HydroScientific West

A2.4. Summary of Argonaut SDI-12 Commands
A2.4.1. General Commands
help sdi12 Lists available SDI-12 commands.
A2.4.2. SDI-12 Commands
sdi12 ON Puts the system in SDI12 mode.
sdi12address a Sets the SDI-12 address of the system.
sdi12format SIDEKICK|SONTEK Selects the data format for SDI-12.
?EXIT! Exits SDI-12 mode and enters RS-232 mode.
Argonaut Operation Manual Firmware Version 7.9 (May 1, 2001)
SonTek/YSI
A2.4.3. SDI-12 Data Formats
When operating in SDI-12 mode, the Argonaut supports two data output formats: SIDEKICK (in
firmware v7.5 and later) and SONTEK (in firmware v7.9 and later).
SIDEKICK Output Data Format
To request and retrieve a data sample in SDI-12 SIDEKICK mode, issue these commands:
Command Response Description _
“aM!” or “aM0!” Initiate measurement request
“aD0!” a±X.XX±Y.YY±Z.ZZ±V.VV±D.DD Retrieve first buffer of sample data
“aD1!” a±S.±T.TT±P.PPP±B.B Retrieve second buffer of sample data
Where:
Data Format Metric English
X.XX = Velocity component 1 (beam 1/X/East) cm/s ft/s
Y.YY = Velocity component 2 (beam 2/Y/North) cm/s ft/s
Z.ZZ = Velocity component 3 (beam 3/Z/Up) [XR only] cm/s ft/s
or Cell End [SL only] m ft
V.VV = Velocity Vector cm/s ft/s
D.DD = Mean Standard deviation cm/s ft/s
S. = Mean Signal Strength counts counts
T.TT = Mean Temperature °C °F
P.PPP = Mean Pressure decibar psi
B.B = Battery Voltage volts volts
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