Programmable Logic Controller (PLCs) book for beginners English & Spanish languages

Today we will present to you a best Programmable Logic Controller (PLCs) book for beginners in tow languages English & Spanish


Programmable Logic Controllers (PLCs) are digital computer systems used in various industrial and commercial applications to control and automate processes. If you're a beginner in PLC programming, this article is for you! Here's a brief overview of the basics of PLC programming:

  1. Understanding PLCs: Before diving into PLC programming, it's important to understand the basic structure and function of a PLC. A PLC consists of a CPU (Central Processing Unit), input/output (I/O) modules, power supply, and programming software. The CPU processes the program instructions and communicates with the input/output modules to control the process.
  2. Programming Languages: There are several programming languages used in PLC programming, including ladder logic, functional block diagram (FBD), and structured text (ST). Ladder logic is the most commonly used programming language, as it resembles electrical schematics and is easy to understand for electrical engineers.
  3. Inputs and Outputs: PLCs communicate with the process via inputs and outputs. Inputs can be switches, sensors, or other devices that provide information to the PLC. Outputs are devices that the PLC controls, such as motors, lights, or actuators.
  4. Addressing: Inputs and outputs are assigned unique addresses, which are used in the PLC program to reference them. Addresses can be numerical, such as "I1" for input 1, or mnemonic, such as "Start" for a start button input.
  5. Programming Software: To program a PLC, you'll need a programming software package, which is usually provided by the PLC manufacturer. These software packages allow you to create, edit, and debug PLC programs, and then transfer them to the PLC.
  6. Ladder Logic Basics: Ladder logic is based on the concept of electrical schematics, where contacts and coils represent inputs and outputs, respectively. Contacts can be either normally open (NO) or normally closed (NC), and the logic is constructed using these contacts and coils to create a control sequence.
  7. Debugging and Testing: Once a PLC program is complete, it's important to test and debug it to ensure that it's functioning correctly. This is usually done using a combination of simulation and real-world testing.

There are several ways to read PLC programming information, including:

  • Books: There are many books available that provide an in-depth overview of PLC programming, including theory, techniques, and practical examples. You can find these books at your local library or bookstore, or you can purchase them online.
  • Online Tutorials: There are many online tutorials available that provide step-by-step instructions and examples for PLC programming. Some of these tutorials are free, while others require a fee. Websites like Udemy, Coursera, and YouTube have a variety of PLC programming tutorials available.
  • Manufacturer Documentation: PLC manufacturers often provide detailed documentation for their products, including information on programming, installation, and maintenance. You can usually find this information on the manufacturer's website.
  • Industry Conferences and Workshops: Attending industry conferences and workshops can be a great way to learn about PLC programming and network with other professionals in the field. These events usually have presentations, hands-on training sessions, and opportunities to ask questions.
  • Regardless of how you choose to read about PLC programming, it's important to practice what you learn by working on actual PLC projects. This will help you to gain hands-on experience and develop your skills. 

Here's an example of a simple PLC program using ladder logic:
Problem Statement: Create a PLC program to control a motor using a start and stop button.
1.    Identify the inputs: In this example, we have two inputs - a start button (I1) and a stop button (I2).
2.    Identify the outputs: In this example, we have one output - a motor (Q1).
3.    Assign addresses: We can assign addresses to the inputs and outputs, for example:
•    Start button: I1
•    Stop button: I2
•    Motor: Q1
4.    Create the program:


  • The first ladder rung represents the start button input (I1). When the start button is pressed, the motor (Q1) is turned on.
  • The second ladder rung represents the stop button input (I2). When the stop button is pressed, the motor (Q1) is turned off.

 For more information you can download the plc programming for beginners book in spanish language:

Introducción a la Programación de controladores lógicos ( P L C )


  you can download the plc programming for beginners book in English language:

Download Basic PLC Programming book




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