How to change the station transmitter IDs for Davis Vantage Pro-2 hardware
The Davis Vantage Pro-2 and Vantage Vue line of weather stations use the same wireless communications system. There are 8 possible station IDs. Davis recommends that you leave your devices in the default ID. However, if you are located in an urban or suburban area, it is possible for a neighbor to put up a Davis station that could interfere with the signal coming from your instruments. While this is a rare occurrence it does happen.
The symptoms of this sort of phenomena are a sharp discontinuous change in the reported conditions followed by what appear to be perfectly normal data collection. A more obvious mode of detection is if you have multiple consoles (or a Weather Envoy) and get different values reported. The only practical solution to this problem is to change the station ID that your weather station is using so that it no longer overlaps with your neighbor.
If you are planning to install a Davis station in an urban or suburban area, it might be wise to change the station ID as part of the installation process. It is simpler to do at that time and greatly reduces the risk that your station will ever get “polluted” by data from a neighbor’s station.
Changing the station ID involves two phases. First, you need to change the ID on the devices that transmit data. Second, you need to change the configuration of your consoles and Weather Envoys to expect data at the new IDs you have chosen.
Changing the station ID on Davis transmitting devices
All Davis transmitting hardware will have a panel of DIP switches somewhere on the circuit board. These must be set in the base-2 expression of the transmission ID you want your device to use. All Davis transmitters have 4 DIP switch panels, but only the first 3 are used to set the ID. The last switch is used to activate a troubleshooting mode. Below is a photograph showing the location of the DIP switch panel on a Davis Integrated Sensor Suite (ISS) circuit board:
The following photo shows the same DIP switch panel on the Davis Temperature/Humidity station:
Changing the ID is as simple as moving the switches to match the number displayed on the table below:
|ID CODE||SWITCH 1||SWITCH 2||SWITCH 3|
If this is performed before installing the battery in the ISS, then the ISS will immediately start up with the ID selected. If you are attempting to change the ID of an ISS that is already in service, there is one additional step required. You must “power-cycle” the ISS by removing the 123 Lithium battery for a brief period and then reinsert the battery. The same strategy can be used for any other Davis transmitting device.
You need to decide on a strategy for choosing your ID numbers that will minimize the risk of having a neighbor selecting the same ID. One possibility is to reverse the order and start with ID and then decrement the ID numbers. It is a good strategy with one possible pitfall: the risk someone else would also adopt this intuitive strategy. Another strategy is to start in the middle and work outwards somehow.
Configuring the Vantage Pro-2 console to receive data at the new ID
Once you have changed the IDs on all the transmitting devices you possess and if necessary power-cycled them, you can now configure your console to receive data at the new IDs. If your data logger is installed in your console, you can use Davis’s WeatherLink software to do this - see the description on how to do this below.
Alternatively, this can be done at the console directly and is the only method to configure your console if it doesn’t have a data logger. Unfortunately, this process not at all intuitive so the Davis Console manual will definitely be required. If you have lost your manual, you can download a copy from Davis at this URL:
A gloss of the procedure is provided below from the Davis VP-2 console manual:
- Enter Setup Mode by pressing DONE and the down-arrow key at the same time.
- Press DONE a second time to switch from the Active Transmitter screen to Configuring Transmitter ID screen.
- Press the < or > keys to select the ID you wish to modify. The ID numbers appear as very small numbers on the lower right of the display. If you are changing the ID of your ISS, you’ll need to first turn off the device connected to ID #1. See the next step on how to do that.
- You can toggle on and off an ID by using the + and - keys.
- For a given ID, you can select the device connected to it by repeatedly pressing the GRAPH key. The available types are: ISS, TEMP, HUM, TEMP HUM, WIND, RAIN, LEAF, SOIL, and LEAF/SOIL. Note that there are 3 distinct types related to temperature and humidity: TEMP, HUM, TEMP HUM. Make sure to select the correct one.
- When you have finished updating the ID numbers for your station transmitters, hold down the DONE button until your console returns to its normal active display.
Other consoles, such as the Vantage Vue console will have an analogous configuration procedure. Check the Vue console manual for details.
Using WeatherLink software to reconfigure the transmitter IDs
There are few things WeatherCat users ever have for the Mac version of Davis’s WeatherLink software, but one such use is to reconfigure the console or Weather Envoy. You should have the latest version of WeatherLink (at the time of writing 5.1). WeatherLink 5.1 will only run in 32-bit mode, so use the Get Information mode of the Finder to confirm this flag is checked.
If you have never run WeatherLink, you will probably need to select the Walkthough item which is the very first item on the Setup menu shown below:
That will allow you to configure all the parameters needed to connect to your station. See the WeatherLink Mac manual for more details. If you have used WeatherLink before, then you can select the Set Transciever menu item (which is boxed in the image above.) It will bring up the following dialog box in which you can configure the transmitters associated with your 8 IDs.
Once your weather station console is starting to receive data from the transmitting devices at the new IDs, you can start WeatherCat once more, and it should work just as before. If you have any problems, make sure to check the Davis troubleshooting section of your console manual. The Console diagnostic mode can be very helpful for locating problems. Another potential problem area is overdue maintenance such as a dead battery. A battery can fail just as you switch the device ID making that device apparently "disappear" for an unknown reason.