Over the last few months I’ve received several messages asking what the correct software is to program the MicroLogix line of programmable controllers.

This confusion surprises me since RSlogix Micro has been out since 2009, as can be seen in this story at Automation.com.

So what’s causing all of this confusion?

Well, it seems to be the vendor’s very own website…

theautomationblog-ml-sw-fiIf you visit any of the MicroLogix product pages over at ab.rockwellautomation.com, you’ll find they all state that you program the MicroLogix line with RSLogix 500.

Ok, for the record you can program MicroLogix PLCs with any edition of RSLogix 500 that is “as new or newer” than the MicroLogix you wish to program.

And it absolutely makes sense to use RSLogix 500 if you also have SLC-500 controllers to maintain.

But today RSLogix 500 is very expensive, costing many times the price of a MicroLogix PLC, so informing potential new customers that you have to use RSLogix 500 quite frankly seems self defeating.

Especially since you can purchase the MicroLogix programming software, RSLogix Micro, for a fraction of the price of the least expensive version of RSLogix 500.

In fact, if you’re using the MicroLogix 1000 or 1100 you can use the complete free version of RSlogix Micro.

Now before you ask, yes I have explained all this to one of the webmasters at Rockwell a few months back, but as you can see in the below episode of The Automation Minute, their website is still directing customers to RSLogix 500 even for the MicroLogix 1100 which has a free software option:

So if you know anyone who’s going to start using the MicroLogix line of programmable controllers, please pass on these tips to them and save them from potentially spending thousands when they may only need to spend a couple off hundred (or in the case of the 1000 and 1100, nothing at all.)

Update 04/09/2018:

While Rockwell has removed most of the documentation about RSLogix Micro from it’s website, I have located two legacy links which have some information.

First up is a free tech note (requires a free login to Rockwell’s website) which explains what is not included in RSLogix Micro that is in RSLogix 500. Note there are dead links in the article as well as other issues with the document:


Next is a Product Profile comparing RSLogix Micro and Developer. This document is not as good as the documents Rockwell has removed or hidden behind their support paywall, but it will give you some idea as to what features each package has:


Until next time, Peace ✌️ 

Shawn M Tierney
Technology Enthusiast & Content Creator

Have a question? Join my community of automation professionals and take part in the discussion! You'll also find my PLC, HMI, and SCADA courses at TheAutomationSchool.com.

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Shawn Tierney



  1. Hello ,

    We use PLC Micrologix Allen bradley 1400 to operate wuth our baggage systems and now we need to do same copy with same programed soft

    pls, tell me can you help us to load from our PLC 1400 to another PLC 1400 to do same copy

    • Good morning @Bogi,

      You can use either 9324-RLM0100ENE or the more expensive 9324-RLM0800ENE to program any MicroLogix. I use the lower cost “100” version with my 1400 quite often.

      You can also use RSLogix 500 to program all MicroLogix and SLC-500 PLCs, but it’s a lot more expensive.

      Hope this helps,

      Shawn Tierney,
      Instructor at http://www.TheAutomationSchool.com

  2. Hello to all members.I am new PLC programmer and just want to know is there any manual for ladder programming guide line.Kindly share here.so if any person wants to enhance his programming skills then he will get information from it.


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