Vaisala PTU200 - Manual (Page 29)

C HAPTER 5________________________________________________________________ OPERATING
V AISALA _________________________________________________________________________ 25
CHAPTER 5
OPERATING
Only a few commands are needed to operate a PTU200 transmitter in
the RUN, STOP and POLL modes. In the SEND mode, no commands
are needed.
In the RUN or STOP modes, the commands R, S and SEND can be
used. The user may also use his own SEND command if he has
previously specified one using the SCOM command.
In the POLL mode, the transmitter responds to a SEND command
only if it includes the address. OPEN and CLOSE commands are also
available for temporary communication with one single transmitter.
In the SEND mode, no commands are needed. The transmitter will
automatically output one message at power-up, or when triggering the
transmitter on using pin 4.
RUN and STOP modes
T ABLE 5-1 summarizes the commands that are used in the RUN and
STOP modes. In addition, the user may use his own SEND command
if he has previously specified one with the SCOM commissioning
command. The commands are not case sensitive except for the SCOM
command.
T ABLE 5-1 Commands used in RUN and STOP modes
Function Command
starting output R
stopping output S
single message output SEND
resetting the transmitter RESET