2 output via the serial bus, 1 starting the measurement output, 2 stopping the measurement output – Vaisala HMP260 User Manual
Page 40: 3 outputting the reading once

HMP260 SERIES
Operating Manual
HMP260-U017en-1.5
34
1997-11-25
5.4.2
Output via the serial bus
5.4.2.1
Starting the measurement output
R
Starts output of measurements to the peripheral devices (RUN mode); the only
available command is S (stop).
The output mode can be changed with command FORM (see Appendix 1).
5.4.2.2
Stopping the measurement output
S
Ends the RUN mode; after this command all other commands are available.
5.4.2.3
Outputting the reading once
SEND
in STOP mode
or
SEND aa
in POLL mode
aa
=
address of the transmitter when more than one transmitter is
connected to a serial bus (0...99)
The output format depends on which parameters the transmitter can output.
Output types:
"RH=999.9 %RH T=999.9 *C",
"RH=999.9 %RH T=999.9 *C Td=9999.9 *C",
"RH=999.9 %RH T=999.9 *C a=9999.9 g/m3 x=9999.9 g/kg Tw=999.9*C",
"RH=999.9 %RH T=999.9 *C Td=9999.9 *C a=9999.9 g/m3 x=9999.9 g/kg Tw=999.9 *C",
The output mode can be changed with command FORM (see Appendix 1).