Echo setting the serial bus echo on/off, Form defining the output format – Vaisala PTB220 User Manual
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HAPTER
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COMMISSIONING
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The RS485/422 interface of the PTB220 series digital barometers is a
non-isolated two-wire half-duplex interface. See page 93 for quick
reference information on how to use the RS485/422 interface of the
PTB220 series digital barometers.
ECHO Setting the serial bus echo on/off
ECHO x
where:
x
=
ON or OFF
The ECHO command is used to set or inspect the echoing condition of
the barometer. In OFF mode the barometer does not output the '>'
prompt character.
Examples:
>echo
Echo
:
ON
>echo off
Echo
:
OFF
...
echo on
(text invisible)
Echo
:
ON
>
FORM Defining the output format
The FORM command is used to set or inspect the output format of the
barometer. See the examples in the next page.
FORM
The user can define the following fields into the output format:
amount of decimals
give number of decimals before a
quantity. Giving 4.2 before the
pressure quantity outputs a reading
with the following form: 1013.12