General
Nokeval 7470 analog output unit can be
programmed to interpret messages from
Vaisala WMT and WXT weather sensors.
This requires configuring both of the
devices. This application note will give
instructions for this process. The
supported Vaisala transmitters are
WXT520, WXT510, WMT52, and
WMT50.
The WMT52 and WMT50 are similar to
WXT520 and WXT510 but have less
functions.
This note applies to 7470 firmware
versions V3.0 and up. For older 7470
versions, an older application note should
be used.
Equipment needed
For Vaisala
The weather station may be connected to
the computer for configuration via a
Vaisala service cable or using regular RS-
232 or RS-485 connection.
The Vaisala unit may be configured with
either Vaisala configuration software or
alternatively with any terminal software,
like HyperTerminal or TeraTerm.
For 7470
The 7470 is connected to the computer
for configuration using a programming
cable. Two types are available: POL-
RS232 for RS-232 port, and DCS772 for
USB port. The programming connector in
7470 is called POL.
If no programming cable is available, the
7470 can be configured using RS-232 or
RS-485 connection, but it will make things
much more difficult. The jumper JP1 must
be closed inside 7470 during
configuration.
The configuration software used is
Mekuwin, available free from Nokeval web
site.
How to go
Since the configuration flow depends on
equipment available, please follow the
flow chart on the next page. Each rhomb
represents a decision, and each box
states a procedure to do. The procedures
have a section of their own in this
application note. It is no use to read the
whole document.
“POL cable” in the chart means Nokeval
programming cable, either POL-RS232 or
DCS772.
Table of contents
Configuring Vaisala with Vaisala Configuration Tool.............................................................4
Configuring Vaisala with a terminal software.........................................................................7
Configuring Vaisala with Sicala.............................................................................................9
Connecting 7470 for RS-232/485 configuration..................................................................10
Configuring the 7470............................................................................................................11
Wiring...................................................................................................................................13
(8 pages)
(3 pages)
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