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Programming and XGB PLC using a Structured Text or ST can be
efficient for control engineers and automation professionals
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Structured text is a low-level programming language commonly
used for PLC's, Programmalogic Control or Programming
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It offers a robust, structured approach, design
control logic for industrial automated systems
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ST programming is sometimes a more straightforward method for
those with a background and programming languages such as C, C++
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plus Java or Python over the more popular ladder logic diagram. In addition, ST
can be used with artificial intelligence AI using the large language model, LLM
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This is ideal for creating an example
program to adjust to your application
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This post will explore the fundamentals of programming
and XGB PLC using structured text programming
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We will be programming or lighted push
buttons to control a start-stop circuit
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Let's get started. The detailed information contained
in this video can be found at ECC Automation.ca
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A link has been put in the description below. If you have not watched
the other videos yet, it will be links in the description below that
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will start you at video one. There will be links to the rest of the videos in this series as well Start
a new project Please start a new project with the free XG programming software we installed previously
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We can start a new project by
selecting the icon on the main menu
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This can also be done by selecting the main menu
project new project, or by using the shortcut
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combination of Control Plus N. The new
project window will now be displayed
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a name for the new project. You will see the default
directory in which our program will be stored
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Under the heading PLC, ensure we select the make and
model of an LS Electric PLC we will be programming
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This is the XGB IEC series, XEM, DXXXXX, H2 type,
and we will leave the LSPLC name as a default
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Under the program heading, we can select the
program's name and the programming language
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We will name this program and ensure
the language is set for structured text
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Select OK Ensure the name does not have any special characters or
spaces An error message will be displayed and you must correct the name
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If we expand the program under
the project window, you will
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If we expand the program under the project
window, you will see the local variable list
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Note, as we program, ensure that you select save often. This
can be done with the main icon page or main menu project save
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Artificial Intelligence AI for programming STPLC code. Generative
artificial intelligence AI can be used to create sample programs using ST
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This is because ST is a structured language that follows a set of rules
and guidelines making an ideal candidate for machine learning algorithms
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ChatGPT is a powerful AI tool that can
generate code for ST for a start, stop circuit
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We can ask chat GPT to create an ST PLC program for a start stop circuit ChatGPT will respond with the
following sample code This is very good to learn the structured methods of programming structure text in the PLC
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We can ask CHOTGPT to create an STPLC program with green
normally open and a red normally closed push buttons
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When the green push button is pressed and not the red push button,
the green LED light will come on and the red LED light will be off
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If the green LED light is on and
the red LED is off and vice versa
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This is a little more detailed about what we
are trying to accomplish with our ST PLC program
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Once we understand the structured text or
ST programming, we can program our PLC
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Structured text, Gram, XGBPLC. Paste the sample
code that ChatGPT created in the program window
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The program code variables are entered into local
variables for the XG-5,000 programming software
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Enter the variables in this
window for our sample program
