Echo serial bus echo, Find all devices in poll-mode send their addresses, Help list commands – Vaisala HMT310 User Manual
Page 48: Pres set ambient pressure for calculations

USER'S GUIDE____________________________________________________________________
48 __________________________________________________________________ M210619EN-D
Ch2 T lo : -40.00 'C
Ch2 T hi : 60.00 'C
>
ECHO Serial Bus Echo
Syntax: ECHO x
Where
x = ON/OFF (default = ON)
The command enables or disables echo of characters received over the
serial line.
FIND All Devices in POLL-Mode Send
Their Addresses
Syntax: FIND
HELP List Commands
Syntax: HELP
PRES Set Ambient Pressure for
Calculations
Syntax: PRES aaaa.a
Syntax: XPRES aaaa.a
Where
aaaa.a =
Absolute pressure (hPa)
Command XPRES should be used if the value is changed frequently. Its
value is not retained at reset, and when set to 0, value set with PRES is
used.