Vaisala Hydromet Data Collection Platform User Manual
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Chapter 5 __________________________________________ Configuring TCP/IP-Based Telemetry
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4.
Add and configure a virtual COM port for the sensor interface
using DXE421. See
.
5.
Add and configure a virtual COM port for the service connection.
a.
Select the Service connection enabled option.
b.
Select the Passive connection, Accept incoming option.
NOTE
The connection to the remote system can be made automatically when
a report is sent (active connection), or it is also possible to have the
remote system connecting the QML logger for polling the reports
(passive connection). This example setup uses an active connection.
NOTE
In this example configuration, the COM Server Unit DXE421 is only
used for providing an Ethernet connection to the sensor. Factory
settings can be used for the DXE421 module; its configuration is not
changed in this example.
NOTE
It is possible to use the same virtual COM port, for example, for
transmitting reports and allowing an incoming service connection.
This is, however, not recommended, since opening a service
connection would prevent the reports from being transmitted. Also if
a connection is already established for sending a report, it cannot be
simultaneously established from somewhere else.