How to Create a Function Block (FB) in GX Works3: Reusable PLC Code
Автор: CK Automation
Загружено: 2025-12-11
Просмотров: 125
Headline: Stop rewriting the same code! This full tutorial shows you exactly how to create, program, and use a Function Block (FB) in Mitsubishi GX Works3 for your MELSEC PLCs.
What You Will Learn in this Video:
1 - Introduction to Function Blocks (FB) and why they are essential.
2 - Setting up a new Function Block (FB) in the GX Works3 project.
3 - Defining FB Interface variables (Inputs, Outputs, and Internal/Temporary variables).
4 - Programming the Function Block code (Example: A simple Motor Control or Timer Block).
5 - Instancing the Function Block in your main program.
6 - Calling the FB and passing parameters (Inputs/Outputs).
7 - Testing and Monitoring the Function Block.
Function Blocks are the key to:
Code Reusability: Write a block once and use it thousands of times.
Code Organization: Keep your main program (Program POU) clean and easy to read.
Standardization: Ensure all your machines use the same, tested, and verified code.
🛠️ Software/Hardware Used:
Software: Mitsubishi Electric GX Works3
PLC Series: MELSEC iQ-R / FX5U (or specify your actual PLC)
🔔 Don't forget to like this video, subscribe for more PLC programming tutorials, and let me know in the comments what Function Block you plan to create next!
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