How do you learn and update your skills in ladder logic and structured text?

1 Ladder logic basics

Ladder logic is a graphical language that resembles electrical schematics. It consists of rungs of contacts and coils that represent the inputs and outputs of the PLC. Each rung is a logical expression that determines the state of the output based on the inputs. Ladder logic is easy to read and understand, especially for electricians and technicians who are familiar with relay logic. To learn ladder logic, you can start with some online tutorials and courses that cover the fundamentals, such as the data types, instructions, timers, counters, and subroutines.

2 Structured text basics

Structured text is a textual language that follows the syntax and rules of high-level programming languages, such as C or Pascal. It allows you to write complex and structured programs using variables, operators, functions, loops, and conditional statements. Structured text is more flexible and powerful than ladder logic, but it requires more coding skills and experience. To learn structured text, you can refer to some books and manuals that explain the syntax, semantics, and standards of the language, such as the IEC 61131-3 standard.

4 Ladder logic and structured text simulators

One of the best ways to learn and update your skills in ladder logic and structured text is to practice with simulators. Simulators are software applications that emulate the behavior and functionality of a PLC without the need for physical hardware. They allow you to create, edit, debug, and test your programs in a virtual environment. You can also simulate various inputs and outputs, such as sensors, switches, and displays, to see how your program reacts. Some examples of simulators are LogixPro, PLC Fiddle, and CODESYS.

5 Ladder logic and structured text online communities

Another way to learn and update your skills in ladder logic and structured text is to join online communities of PLC enthusiasts and professionals. Online communities are platforms where you can ask questions, share ideas, get feedback, and learn from others who have more experience or knowledge than you. You can also find useful resources, such as tutorials, videos, articles, and projects, that can inspire you and help you solve your problems. Some examples of online communities are PLC Talk, Reddit PLC, and Stack Overflow.

6 Ladder logic and structured text certifications

A final way to learn and update your skills in ladder logic and structured text is to pursue certifications. Certifications are credentials that validate your proficiency and competence in a specific PLC language or platform. They can help you advance your career, improve your credibility, and demonstrate your commitment to continuous learning. To obtain a certification, you usually need to pass an exam or complete a project that tests your knowledge and skills. Some examples of certifications are Rockwell Automation Certified Programmer, Siemens Certified PLC Programmer, and Schneider Electric Certified Expert.

7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?