Vaisala Hydromet Data Collection Platform - Manual (Page 366)

User's Guide ______________________________________________________________________
364 _________________________________________________________________ M210933EN-C
The COM Server Unit provides a direct LAN network connection for
weather stations and other systems. The module converts a standard RS-
232 port to a 10Base-T/100Base-T Ethernet connection making
connected systems Internet-Enabled devices. Application software, for
example, display software, can receive the data:
- by reading the data directly from TCP/IP
- from another COM server unit installed at the receiving site to
convert the TCP/IP data stream back to RS-232 for the COM port
connection
- by installing ComServer software, which establishes a virtual
COM port to the IP address making a transparent RS-232
connection to a HydroMet™ system.
The module has a small enclosure with DIN-rail mounting support that
can be connected into various enclosures. It has face connectors where
the power supply, RS-232, and Ethernet lines can be connected.
When connecting the COM server unit to the QML logger, you need to
use the terminal strip to provide power for the unit. For the example
wiring diagram, see
Figure 195 on page 364 .
0802-106 Figure 195 COM Server Unit Wiring Diagram