Finding a MicroLogix 1400′s IP and MAC Address

The MicroLogix 1400 includes an Ethernet port with a fixed MAC address, as well as a settable Ethernet IP address. In today’s article we’ll show you how to find both.

Finding the MAC address on a MicroLogix 1400:

1) Thankfully, each MicroLogix 1400 comes with its unique MAC address stenciled on it. To find it, remove the battery compartment cover on the right side of the Micro:


2) At the very bottom of the compartment, directly under where the battery goes, you’ll see the MicroLogix 1400’s MAC address. The MAC Address of the unit pictured below is: 00:1D:9C:A4:92:97.


Finding the IP and MAC address of a MicroLogix 1400 using the built-in LCD:

1) When the MicroLogix 1400 is powered on, it displays the I/O Status screen as shown below:


2) To find the Micro’s IP and MAC address using the LCD,  we need to access its menu. To do this, press the ESC button and you should see the display below:


3) Next, press the Down Arrow button four times to select “Advanced Set,” then press the OK button:


4) Here, press the Down Arrow button twice to select “ENET CFG,” then press the OK button:


5) Now in the Ethernet Configuration menu select “Status,” and press the OK button.


6) Now you will see displayed the MAC address followed by the IP address of your MicroLogix 1400. The model below shows no IP Address as it’s brand new and is set to automatically obtain an address via BOOT-P.


7) To return to the I/O Status display, press the ESC button until you see the main menu, and then select “I/O Status” and press the OK button:


I hope the above procedure on how to find a MicroLogix 1400’s IP and MAC address was helpful.

If you have any comments, questions, suggestions, or corrections, please feel free to leave them with us by filling out the “leave a reply” form at the bottom of this page.


Shawn Tierney
Automation Consultant
Insights In Automation

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