Vaisala AQT530, Configuration Manual

Page: 24 / 64

2. Set the RS-485 interface to ASCII CSV mode.
set rs485_mode=0
set rs485_baud=115200
set rs485_databits=8
set rs485_parity=n
set rs485_stopbits=1
write --really
• Port settings: 8N1 (8 data bits, no parity, 1 stop bit)
Data sending starts automatically after selecting the mode.
3. Close the local RS-232 maintenance connection.
4. You can view the data through the RS-485 connection. For example, if the RS-485 port
is connected to the serial port of your computer, the ASCII CSV data is available there.
More information
‣
Changing configuration parameter (set command) (page 35)
‣
Saving to non-volatile memory (write command) (page 42)
4.3.1 ASCII CSV data message
The ASCII CSV data message is used for outputting AQT530 measurement data.
<Timestamp>,<Conditions>,<Gases>,<Particles>,<Config>,<Uptime>
Table 13 ASCII CSV message data fields
Field Description Example
Timestamp UTC date and time in ISO 8601 format 2020-12-11T03:00:41
Conditions Environment conditions separated by commas
(included always):
• Air temperature (°C or °F, depending on the
configuration
1)
)
• Air humidity (%RH)
• Air pressure (hPa)
7.3,92.3,990.1
Gases Gas measurement results in parts per million
(ppm) separated by commas
Possible gases, depending on gas cell setup:
• NO
2
, SO
2
, CO, H
2
S, O
3
, NO
Max. number of gas cells at a time: 4
0.009,0.101,0.013,0.03
AQT530 Configuration Guide M212572EN-C
22