List of serial commands – Vaisala HMP155 User Manual

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USER'S GUIDE____________________________________________________________________

28 _______________________________________________________________ M210912EN-C

List of Serial Commands

Most of the commands listed below are relevant only in the digital output
version of HMP155. These commands are marked with an * in the
description column to make them easier to tell apart. The bold text in the
brackets is the default setting. To issue a command, type it on your
computer and press the Enter key.

Table 6

Measurement Commands

Command Description
R

Start the continuous outputting

Stop the continuous outputting

INTV [0 ... 255 S/MIN/H]

Set the continuous output interval (for RUN
mode)

SEND [0 ... 99]

Output the reading once *

SMODE
[STOP/RUN/POLL/SEND]

Set the serial interface mode *

SDELAY[0 … 255]

View or set user port (RS-485) answer
minimum delay *

SERI [baud p d s]

User Port settings (Default: 4800 E 7 1) baud:
300 ... 115200 *

ADDR [0 ... 99]

Set the probe address (for POLL mode) *

OPEN [0 ... 99]

Open a temporary connection to a POLL mode
device *

Close the temporary connection (Back to POLL
mode) *

Table 7

Formatting Commands

Command Description
FORM

Set the output format of SEND and R
commands *

TIME [HH MM SS]

Set or display the time *

UNIT

Select the metric or non-metric output
units *

Table 8

Chemical Purge Commands (Optional)

Command Description
PUR

Set the automatic chemical purge *