PLC Programming Language Voting Results: Ladder Diagram (LD) vs. Structured Text (ST)

In the previous issue, we discussed the programming applications of two languages:

PLC Programming Languages: Ladder Diagram (LD) vs. Structured Text (ST)

According to the voting results over the past month, it is clear that Ladder Diagram LD still occupies the largest share, followed by Structured Text ST.

The specific data is shown in the figure below:

PLC Programming Language Voting Results: Ladder Diagram (LD) vs. Structured Text (ST)

Of course, the language is just a means of programming. What is important is a sufficient understanding of the processes, equipment, etc., combined with one’s own programming habits and experience; any language can be chosen.

From the perspective of the two programming languages mentioned above, LD is undoubtedly the oldest and most widely used language. This is indisputable, especially since some older foreign equipment still requires maintenance, making it a basic skill requirement for PLC engineers or engineers related to automation.

However, with the introduction of the ST language, it indeed has its advantages in some high-end devices, such as those with large computational or data volumes. For personal development and industry trends, it is also essential to master this language.

If there are other programming languages you are concerned about, feel free to leave a comment for discussion at the end of the article.

PLC Programming Language Voting Results: Ladder Diagram (LD) vs. Structured Text (ST)

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PLC Programming Language Voting Results: Ladder Diagram (LD) vs. Structured Text (ST)

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