Vaisala DMT152 - Manual (Page 47)

Chapter 5 ________________________________________________________ Serial Line Operation
VAISALA ________________________________________________________________________ 45
Set Serial Interface Mode
SMODE [xxx]
where
xxx = STOP, RUN, or POLL
In STOP mode: outputting only when command is issued, any command
can be used.
In RUN mode: outputting automatically, only command S can be used.
In POLL mode: outputting only when command is issued, any command
can be used after the line has been opened using the OPEN command.
The polling mode can be used when more than one transmitter is
connected to one serial bus. When set to POLL state, the transmitters
communicate one at a time when the specific transmitter address is called
on the serial line. See descriptions of the commands ADDR on page 43
and OPEN on page 53.
Examples:
smode stop
Output mode : STOP
smode run
Output mode : RUN
smode poll
Output mode : POLL