LCD Operation

This section describes the operation of the LCD panel.

Figure 1. LCD Components

1 2x 16 LCD screen
2 Top button
3 Bottom button

Buttons Functionality

The physical buttons are referenced as follows:
  • Top - the top button located above next to the less-than (<) symbol
  • Bottom - the bottom button located above next to the check mark (✔️) symbol

Each button has a functionality based on the button and how long the button is pressed.

Button Press Duration < 2 Secs Press Duration >= 2 Secs
Top button scroll home
Bottom button select confirm

 

Booting

After the power is on, the LCD displays the image shown below:


After the bootloader is booted and when the EOS image has begun loading, the LCD displays the image shown below:


 

Home Screen

After the EOS has successfully booted, the LCD displays the home screen. The below image is an example output:


The first line displays the hostname, and the second line displays the IPv4 address of the management interface.

Note: To return to the home screen, you can hold the top button for two seconds (“home” function) at any point.

 

Menu Choices

At the home screen, select the top button (“scroll” function) to scroll through possible menu choices. The menu choice will be displayed on the top line, and the bottom line will be blank.


Select the bottom button to select the menu item (select function).

Note: If you do not select within 10 seconds, the LCD will return to the home screen. Alternatively, use the “home” function to return to the home screen.

 

Menu Item Output

Although the physical display is limited to two rows and 16 characters per row, a menu item may display a larger virtual information display. If the width of the line being displayed is wider than the physical screen, then the display will automatically scroll back and forth to display the entire line.

If the number of lines displayed exceeds the physical height, you can scroll through the output using the LCD buttons. Select the top button (“scroll” function) to see earlier lines, and select the bottom button (“select” function) to see later lines.

 

System Info

The System Info menu item shows the following information:

  • Model name

  • EOS version

  • Hardware revision

  • Serial number

  • MAC address of the management interface

Example:

The following figure shows the first two lines of the data:


Note: The SKU is longer than the display area and scrolls over the display area.