UPDATE: As of April 2020 this procedure has changed – see the new article HERE for the updated steps.
Rockwell Automation recently redesigned their website, and it is now actually harder to find the free RSLogix and RSLinx downloads.
In the past, all you had to do was search on “micrologix downloads” from their main page, and the link would show up in the first couple of returns.
I actually recorded that process back in Episode 24 of The Automation Minute in early 2014.
Now however, when you search on Rockwell's website, the page seems to have disappeared from the search results?
And if you take a trip over to the product page for MicroLogix 1100, the link cannot be found under either resources, applications, or software.
What you will find, in what seems like a cruel bit of misdirection, is a recommendation to use RSLogix 500 (now well over $1000) to program the MicroLogix 1100, even though Rockwell makes a completely free version available!
But while the MicroLogix Downloads page IS hard to find, thankfully it still exists.
To get there, just type TheAutomationBlog.com/mld into your browser, and you'll be redirected to the MicroLogix Downloads page at RockwellAutomation.com
Once there you can download both RSLogix Micro Starter Lite (for the MicroLogix 1000 and 1100) as well as RSLinx Classic (needed to download and go online.)
To learn how to setup and use RSLogix Micro and RSLinx Classic, as well as program the MicroLogix 1000 and 1100, check out my affordable MicroLogix training course at PLC Basics Second Edition
And to see a video of the above procedure, check out the below episode of The Automation Minute: