Output via the serial bus – Vaisala HMP228 User Manual
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HMP228 Transmitters
Appendix 1: Serial commands
M210282en-A
52
NOTE
The temperature unit in offset correction is always de-
grees Centigrade, even if the transmitter is using non-
metric units (Fahrenheit) in its measurement output.
OUTPUT VIA THE SERIAL BUS
R
Starting the measurement output
R
Starts output of measurements to the peripheral devices (PC display or
printer); output interval is set with command INTV.
The output format depends on the transmitter configuration and which vari-
ables are in use. The order, however, is always the same: water activity and
temperature temperature. An example:
aw= 0.43.0 T= 21.0 'C
When the transmitter sends out the readings, the serial interface does not echo
any commands; the only command that can be used is S (stop).
The output mode can be changed with command FORM.
S
Stopping the measurement output
S
Ends the RUN state; after this command all other commands can be used.