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KTA-282 Modbus TCP Weather Station Gateway
Getting Started
Certain generic terms are used throughout this manual to refer to equivalent hardware.
Terminology Refers To
“Weather station”

Vantage Pro 2 console

Vantage Vue console

Envoy (wired or wireless)
“Sensors” Any weather sensors your weather station communicates with. This is
commonly a bunch of sensors packaged together as an
Integrated Sensor
Suite (ISS) but can also include:

ISS Plus (ISS + UV & solar radiation)

Wireless Temperature Sensor

Temp/Humidity Sensor

Leaf & soil moisture/temp
Or individual sensors (not an exhaustive list):

Leaf wetness

Solar radiation

UV

Anemometer

Rain Collector

Temperature
“Weatherlink” The serial WeatherLink expansion cable. Required for weather station
connection to the KTA-282. Can also be used to update the firmware of your
console.
“Gateway” The KTA-282 Modbus TCP Weather Station Gateway
“Controller” The Modbus device you are using to poll the KTA-282.
“Weather station
EEPROM” Persistent memory held inside the weather station used to store factory
calibration values, location specific data, and other configuration values. It is
this memory that is set during the setup of your weather station for first use
(latitude, longitude, elevation, etc).
Table 1: Davis Instruments Jargon
Weather Station Set Up
Begin by assembling your weather station and sensors, using the documentation provided by Davis. You will need
to fit the
WeatherLink in this procedure.
This is now the best time to setup your weather station for first use. Your Davis documentation will detail this
process. If you have a weather station with a screen you can follow the prompts after entering “setup” mode,
otherwise the setup process can be done by connection to a PC. The KTA-282 also offers a method for setting up
your weather station (by directly writing to registers), however it is designed for advanced users to alter calibration
values and is not recommended for first use configuration. The following values are typically set during this
procedure:

IDs, and retransmission of wireless sensors (if applicable).

Date and time

Latitude and longitude

Daylight savings

Elevation

Wind cup size (large is standard)

Rain collector size (US models: 0.01 in, UK models: 0.2 mm. This will typically only need to be changed if a
metric adapter is fitted to a US unit)

Rain season start

Serial Baud Rate (ensure it is at default: 19200. No other baud rates are supported by the gateway)
Continue the set up process by connecting all necessary cabling. A generic set up is shown in the diagram below
7/05/2013 www.oceancontrols.com.au Page 3 of 25