Changing the settings (aTU) - WXT530

You can change the following settings:

• Parameters included in the data message
• Update interval
• Pressure unit
• Temperature unit

Change the setting with the following command.

Command format in ASCII and NMEA 0183:

aTU,R=x,I=x,P=x,T=x<cr><lf>

Command format in SDI-12:

aXTU,R=x,I=x,P=x,T=x!

R, I, P, T	The pressure, temperature and humidity sensor setting fields.
x	Value for the setting
<cr><lf>	Command terminator in ASCII and NMEA 0183
!	Command terminator in SDI-12

Example

Selecting how the NMEA message operates: 0TU,N=

NMEA PTU formatting settings:

PTU XDR mode: aTU,N=T

PTU MDA mode: aTU,N=D

An example of MDA:

$WIMDA,29.88,I,1.0120,B,22.5,C,,C,31.5,,,C,,T,,M,,N,,M*3F

Examples (ASCII and NMEA 0183, device address 0)

You need the temperature and humidity data to be available in every 30 seconds

Changing the parameter selection:

0TU,R=0101000001010000<cr><lf>

0TU,R=01010000&01010000<cr><lf>

Changing the update interval:

0TU,I=30<cr><lf>

0TU,I=30<cr><lf>

The response after the change:

0R2<cr><lf>

0R2,Ta=23.9C,Ua=26.7P<cr><lf>

Example (SDI-12, device address 0)

Changing the temperature unit to Fahrenheit:

0XTU,U=F!0<cr><lf>

To check the data content in SDI-12 mode, you must type 0XTU!.