
Chapter 5 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 29
CLOSE Set transmitter in poll-mode
CLOSE ↵
In STOP mode: command OPEN has no effect, CLOSE sets the
transmitter temporarily in POLL mode
In POLL mode: command OPEN sets the transmitter temporarily in
STOP mode, command CLOSE returns the instrument to POLL mode
Example: relative humidity calibration is performed at transmitter 2
which is in POLL mode
>OPEN 2 ↵ opens the line to transmitter 2
>CRH ↵ calibration started
...
>CLOSE ↵ line closed
Output Formatting
FORM Serial output format
FORM x ↵
x = formatter string
Command format can be used to change the format of the output
commands ‘SEND’ and ‘R’.
Modifiers:
x.y length modifier (whole numbers and decimal places)
#t tabulator
#r carridge-return
#n line feed
“” string constant
U5 unit field and lenght
>form "aw="1.2 aw #r#n
aw=0.79
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