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DAVIS WeatherLink Addendum

For alarm output
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Download this manual See also: Software User Manual, User Manual
WeatherLink
Introduction
This Streaming Data Logger is designed to provide an electrical interface
between a Vantage Pro™ or Vantage Pro2™ weather station console or
Weather Envoy™ and an electrical device. You may set a series of
thresholds for various parameters that will trigger if any of them are met (OR
condition), all of them are met (AND condition), one and only one is met
(XOR condition). You may also test whether a parameter is within (between
condition) or outside of (not between condition) a certain range, or changing
at a certain rate (trending), or how far apart (or close) two like parameters are
from each other. Finally, you may also test various parameters to see if they
are reporting a valid number. This can be used to signal a bad data
connection or malfunctioning sensor.
This product also contains the functionality of the WeatherLink for Vantage
Pro Serial version. Please consult the WeatherLink for Vantage Pro Getting
Started Guide and on-line Help files for information on the use of the
WeatherLink program (including its hardware requirements and typical
installation), package contents, and optional accessories for this product.
If you plan to install this product in a Vantage Pro or Vantage Pro2 console,
use the notch in the battery door located adjacent to where the PC connector
protrudes and above the AC power connector to bring out the Connector
Block wire.
If you plan to install this product in a Weather Envoy, it is recommended that
you knock out the left-most tab with the Weather Envoy's PC connector
facing you and loop the Connector Block wire around the datalogger
connector to the Weather Envoy and bring it out where this tab was removed.
Hardware Installation and Requirements
In addition to the requirements for WeatherLink, the Alarm Output capability
of this product has the following additional hardware requirements.
•
One Free Serial Port or One Free USB port with the Serial to USB
adapter (Part # 8434) connected to a Windows PC.
•
Computer running any version of Windows with at least 3 MB free of
RAM and 512 KB free of hard disk space.
•
Small Slotted Screwdriver
®
for Alarm Output
Addendum
1

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  • Page 1 This can be used to signal a bad data connection or malfunctioning sensor. This product also contains the functionality of the WeatherLink for Vantage Pro Serial version. Please consult the WeatherLink for Vantage Pro Getting...

  • Page 2: Software Installation And Setup

    The correct baud rate will be the one set in your Vantage console, and in WeatherLink. The default value is 19200 baud. You may manually set the COM port setting or use the Auto Detect button to automatically find where your streaming data logger is connected.
  • Page 3 Note: If you have more than one streaming data logger connected to your system, it is highly recommended that you manually set the Com Port and Baud Rate. Logger Type The software indicates the logger type and firmware revision level of the streaming data logger in the logger type box.

  • Page 4: Time Out Period

    Streaming Data Utility until the Time Out Period expires. If you need to communicate to the logger with both the Streaming Data Utility and WeatherLink, you should communicate using the Streaming Data Utility first.
  • Page 5 Station Configure Before setting alarms, use this function to indicate what sensors you have with your Vantage Pro or Vantage Pro2 system. The Configuration Utility uses your choices to determine what parameters to show in the list. Note that you can only enter this dialog box when no alarms are set. This prevents a user from hiding a parameter that is set as an alarm condition.
  • Page 6 The temperature and humidity readings are numbered according to their station transmitter ID. So, for example, if you have an ISS on Transmitter ID # 1 and a Temperature/Humidity Station on ID # 4, and a Temperature Station on ID # 2, you would check the following dialog boxes in the example shown below.
  • Page 7 Units Next, select the units of measure in which data is displayed within this Configuration Utility software. Choosing units of measure in this software does not affect the units of measure displayed on the console, which may be changed independently of this software. You may select from the following settings: Temperature: Fahrenheit (°F) or Celsius (°C)

  • Page 8: Output Test

    Wind Speed: Miles per Hour (mph), Knots (knot), kilometers per Hour (km/hr), or Meters per Second (m/s) Rain: Inches (in) or Millimeters (mm) After selecting units of measure, select OK. The Configuration Utility saves your choices. All information is displayed in the units of measure you selected.

  • Page 9: Alarm Logging

    Alarm Download XX-XX-XX.txt where XX indicates the month, day and year, respectively. This file will be located in the Streaming Data Utility directory under your WeatherLink directory. When download is complete, the text file will automatically open.

  • Page 10: Alarm Duration

    Advanced Alarm Duration Use this function to determine how long this alarm output should stay active once it is triggered. The default value is 10 minutes. Frequent communication with the data logger will cause this function to run long. Alarm Reactivation Use this function to determine how long to leave this alarm output deactivated once it is deactivated.

  • Page 11: Alarm Activation

    Alarm Activation This command determines whether an output for an activated alarm is continuous throughout the activation time or a one time pulse. The default is continuous activation. Pulsed relay oriented devices will require the one-time pulse. Circuit Behavior This command determines whether the circuit stays open or closed when no alarms are active.
  • Page 12 Then, select what type of test condition you want to check it against: • A Greater Than or = or high alarm checks for greater than or equal to. • A Less Than or = or low alarm checks for less than or equal to.
  • Page 13 • A Between alarm checks to see if the current value is between the two threshold values. • A Not Between alarm checks to see if the current value is not between the two threshold values.
  • Page 14 • True or False check (Boolean). This is used for the Low Transmitter and Repeater Battery Status parameters, which are not numeric. This check type can also be used with the Bar Trend parameters. • Trending allows you to determine whether a particular variable is approaching a value of concern.
  • Page 15 For guidance on how to use this alarm, it may be best to consult historical weather data from WeatherLink plot data (or other sources) to determine what kind of behavior a parameter exhibits before approaching a value of concern.
  • Page 16 on the second of the two lines (this software will only allow you to enter a positive difference). Select whether you want to check a “Greater Than or =” or “Less Than or =” difference. Make sure the equation you create results in the check that you want.
  • Page 17 • Missing: This is used to check whether a given parameter is missing or invalid. Finally, choose your Logical Grouping (whether you want to test this condition along with any other conditions). Choose DONE if this is the only condition you want to check. Choose OR if you want this condition or any of the other conditions you set to trigger an alarm.
  • Page 18 valid. You may use this selection for the Minus check type except that every use of the Minus check type takes up two lines. Press OK to save all your Alarm Output settings (except the Advanced settings), Cancel to preserve your previous settings. Please note that the Configuration Utility only makes changes to any settings that are different from the previous settings.
  • Page 19 Contact Technical Support for more detailed information on how derived parameters are calculated. Clear Press the Clear button to clear the alarms for this output only. This function clears both the dialog box entries and the settings in the datalogger. You must press this button for each of the individual outputs you want to clear.
  • Page 20 Product Number: 06544 Davis Instruments Part Number: 07395.219 WeatherLink for Alarm Output Rev. A Addendum (08/30/05)

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