External Lightbars

Lightbars provide you with guidance information. Properly installed external lightbars enable you to view guidance information, the blade, and the surface you are working, at the same time.

The Lightbars screen

Use the Lightbars screen to select the guidance that you want. You can access the Lightbars screen from the System Settings menu.

The screen shows the current lightbar configuration.

There are also options for the left, center and right lightbars. Use the toggle to turn the lightbars on and off.

To adjust the brightness of the lightbars, use the slider at the bottom of the screen.

External lightbar behavior

You can install up to three lightbars on your machine. The lightbars behave differently depending on what mode you are working in.

The following tables describe what the lightbars display for each mode.

NOTE – To change the on‑grade tolerance zone, go to System Settings > Grade Tolerance.

Depth and slope mode

Left lightbar

Cut/Fill guidance to the attachment tip:

Green – On grade

Amber – Not on grade
Center lightbar

No guidance given
Right lightbar    

Cut/Fill guidance to the back of the attachment:

Green – On grade

Amber – Not on grade

Design mode

Left lightbar

Attachment tip cut/fill guidance:

  • Green – On grade

  • Amber – Not on grade
Center lightbar

Attachment curl guidance to the bottom of the attachment:

  • Amber (left of center) – curl the attachment out (dump) away from the cab
  • Green – the bottom of the attachment is parallel to the design slope
  • Amber (right of center) – curl the attachment in towards the cab
Right lightbar

Cut/fill guidance to the back of the attachment.

  • Green – On grade

  • Amber – Not on grade

Useful text items

  • Cut/Fill Left
  • Cut/Fill Center
  • Cut/Fill Right
  • Offline

NOTE – If the text item value is Cut then the icon in the text item shows a red arrow; if it is Fill it shows a blue arrow; and if it is within the on grade tolerance it shows a green arrow.

System buzzer

When the lightbars are in Cut/Fill Left and Cut/Fill Right, the system buzzer Cut/Fill is determined on the attachment tip that is farthest from design. Both tips need to be within grade tolerance for the buzzer to sound.

Troubleshooting

The lightbars are disabled if there is no guidance available, for example if the elevation is not benched. When the lightbars are disabled, they appear as follows:

  • The location arrow does not appear
  • The lightbars are grayed-out
  • The Cut/Fill or Offline text items do not show any values

If you notice either of the following problems, ask your technician to check the configuration of the external lightbars in the Web Interface:

  • A lightbar pattern is inverted.
  • The lightbars are lit in the wrong order, for example the right lightbar is showing the left side Cut/Fills.