Vaisala PTU200 Series Guide de l'utilisateur télécharger pdf (Page 29)

CHAPTER 5________________________________________________________________ OPERATING

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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

TABLE 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.

TABLE 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

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 63 64

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Vaisala PTU200 Series Guide de l'utilisateur Page 29