plc

Nine steps to PLC programming for electrical control – you won't become an expert if you skip even one step!

The scientific steps of PLC programming are actually quite simple, but most engineers often overlook many details becau...

Articles
2026-02-22

Hardware connection basics of some components and PLC

Currently, PLCs are widely used centralized control devices in industrial production and automation control. PLCs have ...

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2026-02-22

Analog Sequential Control Methods – PLC Programming Algorithms

I. Brief Description 1. Switch quantities, also known as logic quantities, refer to quantities that have only two value...

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2026-02-22

Decryption method for Mitsubishi FX series PLC

01. Use a serial port debugger and set the relevant parameters. 02. Determine the Mitsubishi PLC model, and select the ...

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2026-02-22

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2026-02-22

Issues to be aware of when using PLCs in industrial automation production.

A PLC is a device used for automated control in industrial production. Generally, it can be used directly in industrial...

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2026-02-22

99% of people don't know why the output lights on a Mitsubishi PLC won't turn on!

The output indicator lights of Mitsubishi PLCs are installed on their respective output modules. These lights indicate ...

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2026-02-22

What are the methods for selecting programmable logic devices (PLCs)?

PLCs come in a wide variety of types, differing in structure, performance, capacity, instruction set, programming metho...

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2026-02-22

How to switch HMI screens using PLC variables

In our projects, we sometimes need to switch the screen display on the touch screen using variables external to the PLC...

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2026-02-22

20 Classic Troubleshooting Questions about Siemens PLCs

Today, I'm bringing you some useful information. When learning Siemens 200 PLC programming instructions, you've...

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2026-02-22

PLC Learning Q&A: A Collection of Commonly Asked Questions for Beginners

I often get private messages or comments from friends asking me questions about PLCs . As an experienced user, I feel i...

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2026-02-22

The most comprehensive collection of Mitsubishi PLC shortcut keys, super practical.

Create a new project file (Ctrl+N) Open the project file (Ctrl+O) Save project file (Ctrl+S) Print (Ctrl+P) Undo Trapez...

Articles
2026-02-22

S7-200 Series PLC Free Port Communication Sharing (4)

In the previous article, we shared several ways to determine the start and end of messages when receiving instructions ...

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2026-02-22

Knowledge Sharing on S7-200 Series PLC Free Port Communication (3)

In previous articles, we shared the sending function in freeport communication. Now, let's discuss the receiving fu...

Articles
2026-02-22