Vaisala PTU200 Series Podręcznik Użytkownika Pobierz pdf (Strona 33)

CHAPTER 5________________________________________________________________ OPERATING

VAISALA _________________________________________________________________________ 29

OPEN Setting a transmitter from POLL mode to STOP

mode

CLOSE Setting a transmitter from STOP mode to POLL

mode

OPEN a <cr> CLOSE <cr>

where:

a = the address of the transmitter (0...99)

These commands are used to set a transmitter temporarily to STOP

mode and back to POLL mode again. The OPEN command is useful

when several transmitters are connected to one serial bus and

communication with a single transmitter is needed. The CLOSE

command is a global command and requires no address.

The PTU200 series transmitters must always be closed after the POLL

mode selection. The RESET command and powering-up will close the

PTU200 series transmitters automatically.

>addr 7 <cr>

Address : 7 <cr>

>smode poll <cr>

Serial mode : POLL

>close <cr>

line closed

Example of opening and closing a transmitter with address 7:

open 7 <cr> (text invisible)

PTB 7 line opened for operator commands

Any commands (except for the ? command) can now be used for the

transmitter with address 7 without affecting other transmitters with

different addresses connected to the same serial interface. However, if

the RESET command is given or the transmitter is powered-up, the

transmitter will automatically return to the POLL mode.

Example of closing a transmitter:

>close <cr>

line closed

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 63 64

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Vaisala PTU200 Series Podręcznik Użytkownika Strona 33