PLC Programming

Visualizing a Traffic Signal Unit...
In order to set the variable ON to TRUE with a mouse click on the switch, activate option 'Toggle
variable' in category 'Input' and enter variable name ".ON" there. Variable keying means that when a
mouse click is made on the visualization element the variable .ON is set to the value TRUE but is
reset to the value FALSE when the mousekey is released again (we have created hereby a simple
switch-on device for our traffic lights program).
Font in the visualization
In order to complete the visualization you should first insert two more rectangles which you place
underneath the traffic signals.
In the visualizations dialog box set white in the category Color for Frame and write in the category
Text in the field Contents "Light1" or "Light2". Now your visualization looks like this:
3-14 CoDeSys V2.3