The CSV data messages are available in the ASCII autosend mode for conveying air quality measurement data.
To use the RS-485 port in ASCII mode:
- Set parameter rs485_mode to 0
- Port settings: 7E1 (7 data bits, even parity, one stop bit)
In ASCII mode, the device prints CSV formatted measurements.
<dateTtime>,<temp>,<hum>,<pres>,<meas>,<conf>,<uptime>
Field | Description | Example |
---|---|---|
dateTtime | Date and time in ISO8601 format | 2015-07-01T12:34:56 |
temp | Air temperature in °C or °F (tempunit parameter, see Vaisala Air Quality Transmitter AQT400 Series Configuration Guide) | 23.5 |
hum | Air humidity in %RH | 43.2 |
pres | Air pressure in mbar | 1011 |
meas |
Gas measurements in ppm Particle measurements in μg/m³ |
0.023,0.067,26.2,105.7 |
conf |
Specifies the printing order of the measurements in the meas field. Always includes T:H:P (temperature, humidity, pressure). |
T:H:P:NO2:SO2:PM2.5:PM10 |
uptime |
Device uptime in seconds. Measurements are considered valid when uptime is more than 86400 seconds (one day). |
131422 |
Examples of CSV messages
2017-10-31T06:55:36,22.3,14.6,1011.2,-0.003,0.039,0.196,-0.001,0.3,0.5,T:H:P:NO2:SO2:CO:O3:PM2.5:PM10,58862
2017-10-31T06:56:37,22.3,15.1,1011.1,-0.002,0.040,0.195,-0.001,0.3,0.5,T:H:P:NO2:SO2:CO:O3:PM2.5:PM10,58923
The actual message does not contain line feeds. |