Setup the Micrologix 1400 PLC for Modbus RS485 Communication

 Setup the Micrologix 1400 PLC for Modbus RS485 Communication   Free Tutorial Download

What you’ll learn

  • Become familiar with the Micrologix 1400 PLC
  • Become familiar with the RSLogix Programming Environment
  • Learn how to use the RSlinx Classic OPC Server
  • Learn how to configure port communications on the Micrologix 1400 PLC
  • Learn how to configure Modbus communication on the Micrologix 1400 in Master and Slave modes
  • Understand the process for determining the required setup for the Micrologix 1400 PLC
  • Establish Modbus RS485 communication with a RS485 Modbus slave device when in Master mode
  • Connect to a Modbus master when in slave mode


  • Basic working knowledge of the Modbus RTU protocol.
  • Familiarity with the installation of software applications on the Windows OS platform
  • Elementary understanding of the Ladder Logic programming language
  • Basic understanding of elementary electronics


Upon seeing the title of this course, you may think that it is overly specific. After all, the Modbus protocol is by far the most popular open communications protocol in the automation industry, and hundreds of devices from different manufacturers are Modbus compliant.

So why concentrate on just one specific PLC? Well, it’s based on almost 2 years of feedback from persons enrolled in my courses. It turns out that the Allen-Bradley Micrologix Series of PLCs is insanely popular, especially the 1400. I have received so very many questions asking advice on the configuration of Modbus on this device, that I finally decided to make a course on the subject.

The course is short, gets to the point quickly and is ultra-practical. In it, I give you what you need to know to perform a very specific task, the configuration of Modbus on the PLC in both Modbus master and slave modes.

In each mode, after performing the configuration, I demonstrate the communication by creating a very simple 2-device network. So this course will imitate real-world conditions as closely as possible. We will be configuring and testing. That’s what happens in the real world, that’s what you would do in your job.

So invite you to jump in and let’s learn how to do!!!

Who this course is for:

  • Electrical Engineers
  • Electrical Technicians
  • Electrical Tech or Engineering Students
  • Process Control Technicians and Engineers
  • Process Automation Engineers
  • Programmers working in the Process Automation field


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