a
Device address
TU
Pressure, temperature and humidity sensor settings command in ASCII and NMEA
0183
XTU
Pr
essure, temperature and humidity sensor settings command in SDI-12
<cr><lf>
Command terminator in ASCII and NMEA 0183
!
Command terminator in SDI-12
The response in ASCII and NMEA 0183:
aTU,R=[R],I=[I],P=[P],H=[H]<cr><lf>
The r
esponse in SDI-12:
aXTU,R=[R],I=[I],P=[P],H=[H]<cr><lf>
where
[R][I][P][H] are the setting fields, see the following section.
Example (
ASCII and NMEA 0183, device address 0):
0TU<cr><lf>
0TU,R=11010000&11010000,I=60,P=H,T=C<cr><lf>
Example (
SDI-12, device address 0):
0XTU!0XTU,R=11010000&11010000,I=60,P=H,T=C<cr><lf>
8.1.2.2 Setting Fields
Parameter Description
[R]
Parameter selection: This field consists of 16 bits defining the PTU parameters
included in the data mes
sages. The bit value 0 disables and the bit value 1 enables
the parameter.
Bits 1-8 determine the parameters included in the message obtained with the following
commands:
•
ASCII: aR2 and ar2
• NMEA 0183: $--WIQ,XDR*hh
• SDI-12: aM2, aMC2, aC, and aCC2
• SDI-12 continuous: aR2 and aRC2
Chapter 8 – Sensor and Data Message Settings
123
sales@streamlinemeasurement.co.uk
www.streamlinemeasurement.co.uk
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