| Parameter | Description |
|---|---|
| [R] | Parameter selection: This field consists of 16 bits defining the PTU parameters included in the data messages. 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
| Bit | Description |
|---|---|
| 1st bit (most left) | Pa Air pressure |
| 2nd bit | Ta Air temperature |
| 3rd bit | Tp Internal temperature 1 |
| 4th bit | Ua Air humidity |
| 5th bit | Spare |
| 6th bit | Spare |
| 7th bit | Spare |
| 8th bit | Spare |
| & | Delimiter |
Bits 9-16 determine the PTU parameters included in the composite data message obtained with the following commands:
- ASCII: aR0 and ar0
- NMEA 0183:aR0, ar0
- SDI-12: aM, aMC, aC, and aCC
- SDI-12 continuous: aR and aRC
| Bit | Description |
|---|---|
| 9th bit | Pa Air pressure |
| 10th bit | Ta Air temperature |
| 11th bit | Tp Internal temperature1 |
| 12th bit | Ua Air humidity |
| 13th bit | Spare |
| 14th bit | Spare |
| 15th bit | Spare |
| 16th bit | Spare |
| Parameter | Description |
|---|---|
| [I] | Update interval: 1 … 3600 seconds |
| [P] | Pressure unit: H = hPa, P = Pascal, B = bar, M = mmHg, I = inHg |
| [T] | Temperature unit: C = Celsius, F = Fahrenheit |
| [N] | NMEA formatter: T = XDR (transducer syntax) D =MDA Defines whether the wind message is sent in XDR or MDA format. |
| <cr><lf> | Response terminator |
1 Tp temperature value
is used in pressure calculation, it does not express the air temperature.