Test the running program

Use the steps to test the Traffic_Light_Control ladder program and verify that the program is working correctly.
Use the running Traffic_Light_Control program to:
  • Monitor the program that is running in the L70E controller.
  • Force inputs.
  • Monitor outputs.
In the previous steps, you downloaded the Traffic Light project to the L70E controller, and then changed the controller to
Run
 mode.
To test the running program
  1. Verify that the controller is in
    Remote run
     mode.
  2. From
    Project Organizer
    , double-click
    Traffic_Light_Control
     to open the program.
  3. From
    Project Organizer
    , double-click
    Global Variables
     to open the global variable grid.
  4. In the global variable grid, do the following:
    1. From the
      Force
       column, select the
      Force
       checkbox for _IO_EM_DI_0.
    2. From the
      Value
       column, select the
      Force
       checkbox for _IO_EM_DI_0.
    On the L70E controller, the output LEDs change state. In the ladder editor, the outputs change state in the
    Value
     and
    Physical Value
     columns.
  5. Clear the
    Value
     checkbox to stop forcing the variable.
    To allow the program or external sources to change the value, clear the
    Force
     checkbox.
    If you encounter errors, update the Traffic_Light_Control program, and then download the program to the L70E controller.
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