What is EN 61131-1:2018?

Introduction to EN 61131-1:2018

The EN 61131-1:2018 is a technical standard developed by the International Electrotechnical Commission (IEC). It defines the programming languages and execution environments for programmable logic controllers (PLCs), which are widely used in industrial automation systems. This standard provides guidelines and specifications to ensure compatibility, reliability, and safety in PLC programming.

Main Features of EN 61131-1:2018

EN 61131-1:2018 comprises five different programming languages for PLCs, namely ladder diagram (LD), function block diagram (FBD), structured text (ST), instruction list (IL), and sequential function chart (SFC). Each language has its own syntax and semantics, allowing programmers to choose their preferred method of programming based on the requirements of the automation project.

In addition to the programming languages, the standard also specifies the execution model for PLC programs. It defines how the various languages are executed in a deterministic and synchronized manner. This ensures that the program behavior is predictable and consistent, which is essential for control applications in industrial environments.

Benefits and Applications of EN 61131-1:2018

One of the key benefits of adhering to EN 61131-1:2018 is the increased interoperability between different PLC systems. By using a standardized set of programming languages, engineers can easily exchange and modify programs across different platforms, simplifying system integration and maintenance. Moreover, this standard promotes code reusability, reducing development time and effort.

EN 61131-1:2018 is widely utilized in various industrial automation applications such as manufacturing processes, robotics, and energy management systems. PLCs programmed according to this standard ensure robust and reliable control of machinery and equipment in these domains. The flexibility provided by the different programming languages allows engineers to tailor their code to specific requirements, enabling efficient and effective automation.

Conclusion

The EN 61131-1:2018 standard plays a crucial role in ensuring the reliability and safety of programmable logic controllers. With its comprehensive guidelines for programming languages and execution environments, it offers a standardized approach to PLC programming, enhancing interoperability and code reusability. By adhering to this standard, industries can achieve efficient and reliable automation, resulting in increased productivity and cost-effectiveness.