4-16 F60 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUALFRONT PANEL INTERFACE CHAPTER 4: INTERFACES4Figure 4-19: Standard vertical front panel4.2.1.3 Graphical front panelThe graphical front panel consists of a USB port, LED panel, color screen display, user-programmable pushbuttons, andnavigation keys. The screen is used to read data, such as metering actual values, alarms, self-test messages, and eventrecords, and for viewing single-line diagrams. Settings can be changed on the front panel except for the graphical frontpanel itself and for IEC 61850. The USB port connects to a computer with the EnerVista software and can be used toupgrade the relay and to transfer files and settings. The USB port is the square type B.User-programmable pushbuttons 9 to 16 can be programmed among the 10 pushbuttons on the left and right sides of thedisplay.