Program files cannot be transferred to the display unit if an error is detected. Detected errors are listed on the [Error Check] window.
Display the [Error Check] window
The [Error Check] window is hidden when logic is being edited.
It will be displayed automatically when the mouse cursor is placed on the [Error Check] tab on the bottom-right of the screen. When the mouse cursor is moved back to the editing screen, it will be hidden automatically.
If the [Error Check] window is not displayed, from the [View (V)] menu point to [Work Space (W)] and click [Error Check (E)].
If showing and hiding the [Error Check] window does not occur automatically, click
on the top-right of the [Error Check] window.
Running Error Check
The following methods allow you to run an error check.
Click 
on the toolbar
Click 
on the [Error Check] window.
Select [Error Check (E)] from the [Utility (T)] of the [Project (F)] menu.
Error Correction
Refer to the displayed [Level], [Error Number], [Screen Location], and [Summary] to create appropriate logic programs.
By displaying the logic screen and selecting the error rung, the error in the logic program will be selected. This will help you correct the error.
In [Preferences], you can select the settings to display duplicate coil warnings during error checking.
3.9.5.4 Preferences - Error Check
Up to 100 errors and warning messages can be displayed. If more than 100 errors and/or warnings are generated, excess messages will not display.