Vaisala HMP243 Uživatelská příručka stáhnout pdf (Strana 86)

HMP240

Appendix 1: Serial commands M210300en

When asking the current address, no address number is given:

>ADDR <cr>

Address : 2 ? <cr>

FROST Setting the calculation mode

Disconnect the security lock jumper!

FROST ON/OFF <cr>

This command is used to select whether the transmitter calculates the

frostpoint (default) or the dewpoint reading at dewpoint temperatures below

0 °C. Select FROST ON for frostpoint and FROST OFF for dewpoint

calculations. For example:

>Frost <cr>

Frost : ON

>Frost off

Frost : OFF

>Frost on

Frost : on

RESET Resetting the transmitter

RESET <cr>

Resets the transmitter. All settings that have been changed remain in the mem-

ory even after reset or power failure.

3.1 Operation modes

SMODE Setting the serial interface

SMODE xxxx<cr>

xxxx = STOP, RUN or POLL

In STOP mode: measurements output only by command, all commands can be

used

In RUN mode: outputting automatically, only command S can be used

In POLL mode: measurements output only with command SEND. When in

POLL mode, the output state is changed as follows:

OPEN aa <cr>

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 129 130

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