Right-clicking on the left pane will allow to you select “Rescan Devices”. This will clear out the Devices cache and initiate a global BACnet WHOIS command to rescan the network for all devices. For a large BACnet network, this can create a lot of Iam response traffic. It is a better practice to only discover the device(s) that you need to use for E2H using the WhoIs command instead.