Vaisala HMP60 Podręcznik Użytkownika Pobierz pdf (Strona 42)

User's Guide _______________________________________________________________________

40 ___________________________________________________________________ M211060EN-F

Set Serial Interface Mode

Use the SMODE command to set the operation mode of the serial

interface. The new mode is applied when probe is reset.

SMODE [xxx]<cr>

where

xxx

Operation mode of the serial interface. See Table 9 below.

Table 10 Serial Interface Modes

Mode

Description

STOP

Probe outputs only when a command is issued. Any command

can be used.

RUN

Probe automatically outputs measurement messages on the

serial line. Only command S or the Esc key can be used to stop

the output.

POLL

Probe outputs only when a command is issued. Probes

communicate one at a time when the specific address is called on

the serial line, which is useful when more than one probe is

connected to one serial bus. Any command can be used after the

line has been opened using the OPEN command.

See descriptions of the commands ADDR on page 42 and OPEN

on page 51.

VDIGI

Special serial interface mode that is only used for interoperability

with Vaisala devices such as HMT120, HMT130, and HM40. This

mode is set at Vaisala for probes that are ordered for such use.

ANALOG

No serial line, analog outputs active. For instructions on how to

enter the serial line when in analog mode, see section Terminal

Application Settings for Analog Probes on page 34.

Example (check current mode):

smode

Serial mode : STOP ?

Example (change mode to POLL mode):

smode poll

Serial mode : POLL

NOTE

In the RUN mode, the probe may send the measurement data message

right as you are typing the S command to stop the sending. Therefore,

you may need to repeat the S command. This must be noted especially

when designing computer programs to access the probe.

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