In general, no. Definitely not with the PanelView Classic, Enhanced, or Standard terminals.
It's not a feature that RA even intended the devices to have, but sometimes you can browse through a PanelView Plus serial port to the connected DH+ or ControlNet network. If you have both a DF1 Full Duplex driver and the network driver configured, the virtual backplane object will accept browse commands and pass them through to the other network.
You can't effectively go online or perform other functions, but sometimes it's possible to browse.