Software setup and configuration
The Obvius A89WS weather station uses an A8332-8F2D I/O Module to convert the sensor data to a Modbus output. The
A8332-8F2D must be configured to read each of the sensors. Each input on the A8332-8F2D represents a specific sensor
input, and two inputs remain unused.
Note: the default configuration of the weather station I/O Module is Modbus address 51, 9600, N81
Modbus Configuration
Default Input mode configuration:
Input channel 1: Air Temperature
(4-20mA)
Input channel 2: Air Humidity
(4-20mA)
Input channel 3: Pyranometer
(4-20mA)
Input channel 4: Cell Temperature
(resistance)
Input channel 5: Wind Speed
(4-20mA)
Input channel 6: Wind Direction
(4-20mA)
Input channel 7: (not used)
Input channel 8: (not used)
Note: Some weather station configurations may not use all the sensors listed above. The input channels associated with these
sensors should be disabled if the sensor is not present. Use the OCC software or the AcquiSuite configuration menu to
disable channels with no sensor attached.
Note: The YWX0483 (rev A) control box shipped between Aug and Sep 2010 have a different wiring connection list. The inputs are
configured as 1= wind speed, 2=direction, 3=temp, 4=humidity, 5=pyranometer, 6=cell temp. For more information on the rev-a model
of this control box, please contact technical support at Obvius.
Modbus Address and Dipswitch Configuration
Modbus Address:
The default Modbus address of the weather station A8332-8F2D I/O
Module is set to 051. The address may be modified by changing the Modbus address
dipswitches on the A8332-8F2D I/O Module. This address must be unique among all
Modbus devices in the system. The A8332-8F2D supports address 001 through 127.
Select an address, and set the dipswitches to match.
The sum of the value of the switches is the address. In the example to the right, address
51 is set by placing switch 1, 2, 16 and 32 to the on position.
Note: 1 + 2 + 16 + 32 =
51
Baud Rate
: This option sets the serial port speed for the RS-485 port. Set this option to
“off” for 19200. Set the switch to “on” for 9600 baud. The default is 9600 (on)
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A89WS Weather Station (gen 3)
