ABB PLC Articles - Page 8 of 65

Mitsubishi M80 Secondary Development Learning – PLC Text Box Control for Modifying PLC Variables

2026-05-27 by boardor

This section is for personal learning purposes. If there are individuals involved in Mitsubishi secondary development, you can join the simulation group for communication. Mitsubishi Learning | Mitsubishi Simulation Software Learning Group [NCTrainer2plus] Learning through exploration, during this process, we will continue to use our previous learning approach to seek answers. This may conflict with … Read more

What is a PLC? Understanding the ‘Brain’ of Industrial Automation in Three Minutes

2026-05-27 by boardor

Imagine an automated factory: conveyor belts operating precisely, robotic arms moving freely, production lines running 24/7… Who is giving the orders behind this orderly operation? Is it a group of engineers frantically operating computers in the background? No! The true conductor is a metal box called PLC. It is the “strongest brain” in the field … Read more

Siemens SMART200 PLC Servo Motor and Electric Hoist Control Program Design

2026-05-26 by boardor

Recently, an old student asked about the design of the Siemens SMART200 PLC servo motor and electric hoist control program. I will summarize and organize the information here for interested students! Project Overview This project originates from the practical need for automated control of a single-arm crane, aiming to build a reliable control system using … Read more

Siemens PLC Analog Output Processing Subroutine

2026-05-26 by boardor

We designed a subroutine for processing analog outputs, which can convert engineering values into analog output values, and includes output limits, gain adjustments, and alarm functions.Features: Converts engineering values (real numbers) into integers ranging from 0 to 27648 for analog output. Allows setting of gain and offset to adjust output characteristics. Allows setting of upper … Read more

Upgrading Your Electric Kettle with PLC: A Step-by-Step Guide to Temperature Control

2026-05-26 by boardor

Have you ever faced the problem of forgetting to drink from your kettle after boiling water, only to find it has cooled down? If you want to enjoy warm water without having to reboil, we can use a bit of technology to transform a regular kettle into a “temperature control device”. Today, I will guide … Read more

S7-1500 PLC Achieves Constant Pressure Water Supply: A Comprehensive Breakdown of Closed-Loop PID from Theory to Practice

2026-05-26 by boardor

(Thanks to everyone for your support and appreciation. If this article resonates with you, please “like” and “recommend” it. Thank you all!) Task Introduction In a certain community’s secondary water supply system, to ensure that every household receives normal water supply and to maintain the stability of water flow, a constant pressure water supply design … Read more

How to Write the PLC Control Program for Factory Water Tank Level Monitoring System Correctly!

2026-05-26 by boardor

Low water levels in factory production water tanks can affect normal production, while high levels can lead to overflow accidents. Therefore, it is necessary to monitor the water level in the factory water tank in real-time and automatically issue an alarm when the water level is abnormal. The specific requirements for the water level monitoring … Read more

Modular Programming for PLCs

2026-05-26 by boardor

Modular Programming Modular programming divides complex automation tasks into subtasks corresponding to technical functions in the production process, with each subtask corresponding to a subroutine called a “block”. The program is organized through mutual calls between blocks. This type of program is easy to modify, debug, and troubleshoot. The block structure significantly increases the organizational … Read more

Why is PLC Communication Debugging So Challenging? Unraveling the Industrial Neural Network

2026-05-26 by boardor

Click to follow and unlock more PLC technical knowledge! Introduction If we compare an automation system to the human nervous system, then PLC communication is undoubtedly the most complex neural network within it. Every engineer who has dealt with PLCs has pondered late at night, staring at the blinking fault indicator: why is communication always … Read more

PLC Engineers vs. Maintenance Electricians: Is There Really a Significant Difference in Technical Expertise?

2026-05-26 by boardor

A common scene in many factories: when equipment malfunctions, maintenance electricians rush in with their toolboxes, while PLC engineers arrive with their laptops. Both are addressing equipment failures, yet bystanders often cannot distinguish between the two, with some even exclaiming, “Aren’t they just fixing machines? What’s the difference?” This statement is jarring but reflects the … Read more