MicroLogix 1200 Expansion I/O

ML1200-XIO-FRONTThe MicroLogix 1200's base I/O can be expanded using 1762  I/O modules. In this article we'll describe the details of how this is accomplished.

The right front of the MicroLogix 1200 has a small cover over top of a 1762 I/0 expansion port, and the first step in adding 1762 I/O to a MicroLogix 1200 is to power down the unit, and remove the cover.

ML1200-XIO-CABLENext, you'll find that your 1762 expansion I/O modules come with a ribbon cable and connector on the left side. Also on the front right of the expansion module you'll find another small cover over the top of an additional expansion I/O port.

To install your 1762 expansion module, simply plug the ribbon cable connector into the MicroLogix 1200's expansion I/O connector and replace the cover. Then, to connect additional 1762 expansion I/O modules, remove the expansion cover from the first module and plug the second module into it, replacing the cover when done.

Repeat this process until you have installed all your 1762 expansion modules, or have reached the power limit of the MicroLogix 1200's expansion bus.

ML1200-XIO-CONNECTEDBecause of the wide variety of expansion modules, each requires a different amount of power from the MicroLogix 1200. Due to this fact, the actual number of supported expansion modules on a MicroLogix 1200 is anywhere between 3 and 6 modules.

To aid in the process of calculating exactly how many modules can be added, Rockwell has developed an easy to ML1200-XIO-CONNECTED-2use spreadsheet to help qualify MicroLogix 1200 expansion I/O systems. This spreadsheet can be downloaded from Rockwell's website using the below link:

Well, that's it for today's article about MicroLogix 1200 expansion I/O. For more information on the installation of MicroLogix 1200 expansion I/O, see the manufacturer's installation instructions HERE.

And if you've have any comments, questions, or corrections, please feel free to fill out the “post a comment or question” for at the bottom of the page.


Shawn Tierney
Automation Instructor and Blogger

If you enjoyed my article, you may like my courses at TheAutomationSchool.com
Eliminate Ads and get Free Downloads by becoming a Patron here
Have a news tip? Share it with us here

Shawn Tierney

Shawn began sharing automation news and know-how online in 1996 when he launched his first BBS. Then in 1999 he moved to the internet launching ShawnMichael.com, which he later renamed ShawnMTierney.com. In 2013 he moved his automation efforts to a new website, TheAutomationBlog.com, which has since become the most popular independent industrial automation blog on the web.

Click HERE to scroll down to view or leave comments

Leave A Blog Reply Here

Please enter your blog comment!
Please enter your name here