The first step to adding a device will be to navigate to the 'Input Device Wizard', under 'Inputs'.
The Device wizard will appear. To the right of the connection string input box, there is a button for the connection string builder
Here, you can fill in the details to connect to your device or PDC. In this case, I have a PDC running on the local system.
The connection string is filled in after hitting 'Save'. You should also review the device ID code and protocol. Then, click 'Next'
Click on Request Configuration to query the device and receive its configuration
In this case, I have two devices attached to the PDC.
In step 3, you can review the device information
After the device is saved, you can view the configuration of the device
To verify connectivity, navigate to 'Monitoring' -> 'Graph Measurements', and select the measurements you would like to trend.