Article: KB-12038
Hot Fix:
Troubleshoot unresponsive PLC-controlled conveyors with TopHat IOs (Walmart sites).
Skill required to complete this article: Controls and level is Beginner.


Site reported conveyance PLC-controlled lines not running and all electrical checkouts have been performed.

This has been identified as a well known fix for the MBP area at DC 6027 (Woodland, PA).


Schneider Electric, PLC, Modicon M340, Control Expert, Proworx32, TopHat.


1.- Power off the affected Control Panel.

2.- Identify the affected TopHat module(s).

3.- Leave the CP off for 5 mins solid.

4.- Have site reseat the comm adapter. Make sure it is reseated all the way in.

Site will need a small flathead screwdriver for removal.



5.- Power up the CP and test.

 Related Articles
No Related Articles Available.
 Help us improve this article...
What did you think of this article?
poor   excellent
Your Email:
Tell us why you rated the content this way. (optional)
RadEditor - HTML WYSIWYG Editor. MS Word-like content editing experience thanks to a rich set of formatting tools, dropdowns, dialogs, system modules and built-in spell-check.
RadEditor's components - toolbar, content area, modes and modules
Toolbar's wrapper 
Content area wrapper
RadEditor's bottom area: Design, Html and Preview modes, Statistics module and resize handle.
It contains RadEditor's Modes/views (HTML, Design and Preview), Statistics and Resizer
Editor Mode buttonsStatistics moduleEditor resizer
RadEditor's Modules - special tools used to provide extra information such as Tag Inspector, Real Time HTML Viewer, Tag Properties and other.

No user comments available for this article.
Published on 12/12/2023.
Last Modified on 12/12/2023.
Last Modified by Rodolfo Aguilar.
Article has been viewed 121 times.
Rated out 0 of 10 based on 0 votes.
Print Article Print Article
Print Article Email Article