CompactLogix, RSLinx Classic – How to set the Ethernet address through its Serial Port

In today’s article I walk you  through how to set or change a CompactLogix processor’s Ethernet address through its Serial Port using RSLinx Classic.

Step 1) Confirm your RSLinx RSWho window browses your CompactLogix via the DF1 driver

Open RSLinx and check to be sure your CompactLogix is showing up under the Serial DF1 driver as shown below:

NOTE: If you would like to learn how to setup an RSLinx driver to communicate to a CompactLogix processor using a serial connection, see our previous article HERE.

Step 2) Expand the CompactLogix in RSWho

Next, click on the small “plus” symbol to the left of your CompactLogix in order to browse its contents:

Step 3) Expand “Backplane” under processor

Now expand the “Backplane” device under the processor:

Step 4) Select the Ethernet device

The next step is to select the Ethernet Card / Module underneath the “Backplane” as shown below:

Step 5) Right click on Ethernet device and select Module Configuration

Right click on the Ethernet card and select “Module Configuration” from the menu as shown below:

Step 6) Select the “Port Configuration” tab

In the popup window select the “Port Configuration” tab:

Step 7) Enter in a new Ethernet address and insure “Static” is selected

Now you can enter in an Ethernet address for your CompactLogix’s Ethernet port. Also be sure “Static” is selected, and then click on OK:

Step 8) Accept Configuration

The final step is to accept the configuration by clicking on “Yes,” after which your CompactLogix will have the Ethernet address you entered above:

NOTE: You can watch me run through the above steps in today’s video episode of The Automation Minute!

• Set CompactLogix Ethernet Address through USB or Serial (M2E13)

I hope the above article on how to set or change a CompactLogix’s Ethernet address through its serial port using RSLinx was helpful.

If you have any questions or comments, please feel free to share them with us by clicking on the “post a comment or question” link below.

Until next time, Peace ✌️ 

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Shawn M Tierney
Technology Enthusiast & Content Creator

Eliminate commercials and gain access to my weekly full length hands-on, news, and Q&A sessions by becoming a member at The Automation Blog or on YouTube. You'll also find all of my affordable PLC, HMI, and SCADA courses at TheAutomationSchool.com.

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Shawn Tierney

I'm a lifelong Technology Enthusiast who started programing in the early 80's on the new Apple II and VIC-20 personal computers. After earning a degree in Electronics, I worked as a Certified Automation Specialist for 25 years before leaving to focus on teaching at The Automation School, as well as publishing industry news and product how-to’s at The Automation Blog.

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