How to find the MAC and IP address on the MicroLogix 1400

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Update: To see the latest article on this topic click HERE.

MicroLogix 1400The MicroLogix 1400 is one of the few Allen-Bradley PLC's with a small LCD display and navigation keys on the front of the unit, and these can be used to find the PLC's MAC and IP address.

Displayed once?

This built-in LCD display is actually quite functional, allowing users to access a lot of information about the PLC. However, in what could only be an effort to minimize cost, information that can be found on the display typically can't be found elsewhere on the unit. For instance, since the I/O status is displayed on the built in LCD, the PLC contains no I/O status LEDs. And because the MAC address can also be found using the built-in display, its not listed on the product label like other Allen-Bradley Ethernet devices.

However, the built in LCD Display and navigation keys are easy to use, and below I list the steps to take to display the MAC and IP address:

To view the MicroLogix 1400 MAC and IP address from the front of the MicroLogix 1400

To access the menu, start by pressing the ESC key to get the main menu of “I/O Status, Monitoring, Mode Switch”

MicroLogix 1400 Main LCD Menu

Press the arrow down key four times to select “Advanced Set” and press the OK key

MicroLogix 1400 Main LCD Menu 2

Press the arrow down key two times to select “ENET Cfg” and press the OK key

MicroLogix 1400 Advanced LCD Menu

Press the OK key again with “Status” selected:

MicroLogix 1400 ENET Cfg LCD Menu

You will now see the MicroLogix MAC address and IP address displayed

MicroLogix 1400 ENET MAC and IP LCD Menu

To return the MicroLogix 1400 to the main menu press the ESC key until you see “I/O Status, Monitoring, Mode Switch”

MicroLogix 1400 Main LCD Menu

To change the MicroLogix 1400 IP address from the front of the MicroLogix 1400

Press the ESC key until you see the main menu of “I/O Status, Monitoring, Mode Switch”

MicroLogix 1400 Main LCD Menu

Press the arrow down key four times to select “Advanced Set” and press the OK key

MicroLogix 1400 Main LCD Menu 2

Press the arrow down key two times to select “ENET Cfg” and press the OK key

MicroLogix 1400 Advanced LCD Menu

Press the arrow down key once to select “IP Address” and press the OK Key

MicroLogix 1400 ENET Cfg LCD Menu

At this point if a password has been added you will need to enter it here. Or if no password exists you can just press the OK key

MicroLogix 1400 ENET Cfg IP Address Password LCD Menu

On the next screen you will see the setting for BootP, DHCP, or Static ENET Mode. In most cases “static” will be chosen to allow the MicroLogix 1400 to maintain a single IP address. Press the OK key to continue

MicroLogix 1400 ENET Mode LCD Menu

On this screen you will now see the IP address which you can modify to your desired setting. Press OK when done to set the Subnet Mask and Default Gateway settings

MicroLogix 1400 ENET Mode IP Address Set LCD Menu

When done, press the ESC key until you see “I/O Status, Monitoring, Mode Switch”

MicroLogix 1400 Main LCD Menu

How to view the MicroLogix 1400 MAC and IP address inside the RSLogix offline file

If you don't have access to the MicroLogix 1400, but do have the RSLogix file uploaded from the PLC, you can also still the MAC and IP address.

First, open the file in RSLogix

RSLogix500 offiline with IC1400DMO

Next, open the Channel Configuration and select Channel 1. As seen below, this will display the MAC and IP address of the unit the file was uploaded from:

MIcroLogix 1400 MAC and IP Address viewed in RSLogix500

I hope you’ve found the above steps to finding the MicroLogix 1400's MAC and IP address helpful. If you have any comments or questions please don’t hesitate to post a comment or question by using the “post a comment or question” link below.

Sincerely,

Shawn Tierney
Automation Blogger and Trainer
If you enjoyed my article, you may like my affordable courses at TheAutomationSchool.com




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