Follow these steps to get the BACnet client started up.

1. Connect your PC to the AddMe BACnet port (NET terminals next to power) via an RS-485 interface. This may consist of an adapter on a standard PC COM port, or a USB to RS-485 "dongle" with its manufacturer's drivers installed to make it appear as a COM port.

2. Initialize the stack. Select the COM port that your RS-485 interface is connected to or configured as. Select the baud rate. The Max Master count will default to 3 unless you enter some other number. For configuration use, it is suggested that you keep this number low. Click Init Stack. Once clicked, the BACnet MS/TP protocol stack will begin polling. You will need to close the program and restart to change baud rate or com port once the stack has started.

NOTE: If you are uncertain of the station ID, device instance, or baud rate your AddMe is currently set to, you will need to perform the communication recovery procedure.

3. Look for your device. Until the stack finds your device, you cannot communicate with it. Enter the device instance your gateway is currently configured for (see note above), and click Find. This sends out the "Who Is" message.

You need to click Find once to send the initial Who Is, and click it a second time to see if you got a response. If you are lucky, you will get "Found device" right away, but you may need to click Find a few times. If it still does not find your device after a number of tries, close the program and restart the stack. MS/TP is picky about character timing, but Windows is rather sloppy about it, so the Windows comm's driver often gets unhappy.

Make sure you are looking for target device 2 unless you reconfigured it otherwise, or unless you held the INIT button down during power-up.

4. Test the connection. Once MS/TP finds your device, you can test the connection by simply clicking the Device Settings Read button. This will read the communication parameters as well as model and firmware version which are indicated in the log window.

Reading device settings, which includes model, will result in automatically changing the model selection in the top right corner of the screen. If this is not set correctly, your attempts to read/write data objects will have problems since you may be trying to access objects that don't exist or do not match configuration.

5. Proceed with configuration as applicable. You will now begin to use all other areas of the screen. Refer to the overall configuration tool help, and click on each area of the dialog box screen shot to review instructions for that area.