# Example: Use a symbol indicator

In this example, the symbol indicator monitors the Indicator connection to show the mode of operation of a blower. The blower can operate manually or automatically, or it can be turned off.

- Create a symbol indicator with the colors "red" for State 0, "yellow" for State 1, and "green" for State 2.

The application reads the tag you assign to the Indicator connection and updates the indicator’s state when the value changes. This state change enables the current operation mode to be shown.

## See also

Create symbol indicators

How the symbol indicator works at run time

Set up how the symbol indicator looks

Set up states for the symbol indicator

Set up controls for the symbol indicator

Causes of run-time errors for the symbol indicator