Thanks for posting the part number; that helps a lot because it tells you what kind of communication protocol and port is on the PanelView.
2711- means Standard PanelView
K means Keypad version
3 3 inch display
5 DH485 protocol with RS232 serial port
A Amber/monochrome display
L1 24 VDC power
The simplest thing to do is connect a straight-through serial cable and use the "1747-PIC/AIC+" driver in RSLinx. You need a built-in serial port and a bit of luck to make this driver work on modern computers.
Another connection method is the 1747-UIC, which is a USB to DH485 converter with both RS232 and RS485 electrical interfaces.