ABB PLC

Comparison of Advantages and Disadvantages between PLC and Microcontroller

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Comparison of Advantages and Disadvantages between PLC and Microcontroller

In the field of automation control, both PLC (Programmable Logic Controller) and microcontrollers are extremely important control devices, each possessing unique advantages and disadvantages suitable for different application scenarios. Advantages of PLC 1. Simple programming and easy to learn: PLC uses a ladder diagram programming method similar to relay control circuit diagrams, which is intuitive … Read more

Advanced Guide: Comprehensive Analysis of Terminology Differences Among Three Major PLC Brands | Essential Guide for Cross-Brand Engineers

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Advanced Guide: Comprehensive Analysis of Terminology Differences Among Three Major PLC Brands | Essential Guide for Cross-Brand Engineers

Introduction: Have you ever faced communication barriers due to terminology differences between brands on an automation project site? Have you ever applied the concept of “soft components” from Mitsubishi to a Siemens project, resulting in programming errors? The terminology differences among various PLC brands represent a significant gap that engineers must bridge to progress from … Read more

Data Acquisition in Milliseconds Using Siemens S7-1200 PLC with Custom Upper Computer Software

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Data Acquisition in Milliseconds Using Siemens S7-1200 PLC with Custom Upper Computer Software

Data acquisition in milliseconds is achieved using the Siemens S7-1200 series PLC in conjunction with custom-developed upper computer software. 1. Siemens S7-1200 series PLC; 2. Analog data acquisition module; 3. Data acquisition archived to the upper computer, curve recording; 4. Support for chart and curve printing.

Issue 705 | Follow-up on PLC Remote Maintenance and Debugging: Keywords, Siemens PLC VPN Remote Connection

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Issue 705 | Follow-up on PLC Remote Maintenance and Debugging: Keywords, Siemens PLC VPN Remote Connection

Forum Weekly 05 Sep. 2025 This week’s exciting content: 1. Follow-up on PLC remote maintenance and debugging: Keywords, Siemens PLC VPN remote connection. 2. In 2025, how do you map and use IO points in PLC programming? 3. Encountering strange issues with Xinjie XDM 5. Issues with inverter output current 6. Schneider ATV610 inverter output … Read more

The Importance of Choosing Normally Open and Normally Closed Contacts in PLCs

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The Importance of Choosing Normally Open and Normally Closed Contacts in PLCs

In low-voltage control circuits, stop and emergency stop buttons are generally designed with normally closed contacts. However, in PLC control, many colleagues dismiss this, thinking, “It doesn’t matter whether we use normally open or normally closed contacts; both can achieve the same result.” This mindset often leads to significant losses. For example, in a simple … Read more

A Financial Perspective on Domestic PLC: The Rise of Huichuan Technology

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A Financial Perspective on Domestic PLC: The Rise of Huichuan Technology

In the field of domestic industrial control, there is a shining star—Huichuan Technology. Founded in 2003, it has a unique Huawei gene. Looking back to 2001, Huawei sold its electrical division to Emerson, and at that time, the director of the inverter product line, Zhu Xingming, left Huawei to establish Huichuan Technology, thus beginning Huichuan’s … Read more

PLC Motor Control: 2 Hours On + 2 Hours Off Cycle Program Case Study (Includes Wiring Diagram + Ladder Diagram)

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PLC Motor Control: 2 Hours On + 2 Hours Off Cycle Program Case Study (Includes Wiring Diagram + Ladder Diagram)

In intermittent production scenarios (such as material dryers and timed conveyor lines), it is often necessary for motors to operate in a cycle of “run for 2 hours, stop for 2 hours.” Today, we will use the Siemens S7-200 SMART PLC to guide you step by step from hardware wiring to program writing to achieve … Read more

What Level of PLC Knowledge is Required to Earn a Monthly Salary Over 10,000?

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What Level of PLC Knowledge is Required to Earn a Monthly Salary Over 10,000?

On-Site Pain Points: Fragmented Skills, Low Value In the workshop, I’ve seen too many PLC programmers who can write a few segments of ladder logic and adjust parameters, but struggle with complex projects. When equipment malfunctions, they panic, and project timelines drag on, leading employers to be reluctant to offer high salaries. The biggest issue … Read more

Speed Showdown: Revealing the Speed Performance of 10 Mainstream PLCs in Modbus TCP Communication!

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Speed Showdown: Revealing the Speed Performance of 10 Mainstream PLCs in Modbus TCP Communication!

Today, we will conduct a practical test to see how fast the communication speed is when implementing Modbus TCP communication with different brands of PLCs or boards. Testing Interface We used our self-developed communication library for testing. Different communication libraries may have slight differences, and the test results are for reference only and do not … Read more