How to Fix Unreadable USB/SD Cards

How to Fix Unreadable USB/SD Cards

Beginner One-Click System Reinstallation Learning and sharing computer knowledge, let’s improve together “2500 BBC HD Documentaries with Bilingual Subtitles (▲ Click to Claim Benefits) Have you ever encountered an issue where you can’t open your external hard drive or SD card? Today, I will teach you a practical little trick. Image Tutorial Before you leave, … Read more

10 Practical Tips for Siemens S7-1200 Fault Diagnosis

10 Practical Tips for Siemens S7-1200 Fault Diagnosis

Click on the blue text to follow us [PLC Fault Diagnosis] How to Quickly Troubleshoot Common Faults of Siemens S7-1200? 10 Practical Tips to Make You an Expert in Fault Diagnosis! The Siemens S7-1200 PLC is known for its stability and rich functionality, but even the best equipment can experience faults. This article shares 10 … Read more

Analysis and Solutions for PLC Refusal to Accept Commands from Host

Analysis and Solutions for PLC Refusal to Accept Commands from Host

1. Communication Protocol Mismatch The communication between the PLC and the host computer requires the use of the same communication protocol. If the protocols do not match, the PLC will be unable to accept commands from the host. It is essential to ensure that the communication protocols are consistent and correctly configured. 2. Incorrect Communication … Read more

How to Access the 192.168.1.1 Login Page

How to Access the 192.168.1.1 Login Page

Why can’t I open the router’s settings interface at http://www.192.168.1.1? What should I do if I can’t access the page when setting up the router via http://www.192.168.1.1 on my phone? Answer: The correct login IP address for the router should be 192.168.1.1, not “http://www.192.168.1.1” which is an incorrect address. You can remove the “http://www.” prefix … Read more

Overview of Common Linux Commands

Overview of Common Linux Commands

Click the blue text above to follow us Overview This article discusses the relationship and role of the system kernel and the Bash interpreter, how to correctly execute Linux commands, and common troubleshooting methods. Experienced operations and maintenance personnel can appropriately combine commands and parameters to make Linux character commands more flexible while relatively reducing … Read more

Touchscreen Repair: Fault Analysis

Touchscreen Repair: Fault Analysis

1. Why is the touchscreen inaccurate? a. It may be that the reflective stripes around the screen of the acoustic touchscreen are covered with dust after a period of use. Please wipe it with a dry, soft cloth, then turn off the power, restart the computer, and recalibrate. b. It is possible that the reflective … Read more

Common Faults and Solutions for LCD and DLP Projectors

Common Faults and Solutions for LCD and DLP Projectors

Common Faults and Solutions for LCD and DLP Projectors:Projectors are essential electronic devices for our daily office work, and they are indispensable for company meetings and training sessions. However, electronic devices can encounter various faults. What should we do if our projector has minor issues during use? Below, Hongchao Intelligent Security summarizes some common small … Read more

How to Use a Digital Multimeter: A Step-by-Step Guide

【Four Techniques to Efficiently Use a Digital Multimeter】 1. Determine if a Circuit or Device is Live The AC voltage range of a digital multimeter is very sensitive; it can display even small induced voltages. Based on this feature, it can be used as a test pencil. The method is as follows: set the multimeter … Read more

Methods to Check Motor Condition with a Multimeter

Methods to Check Motor Condition with a Multimeter

Click on the blue text to follow me! The motor is the most common driving power device in our production and daily life. For example, common toys, fans, water pumps, etc., all have motors. Apart from those that are obviously burnt out, sometimes the motor’s exterior does not show visible damage. How can we determine … Read more

Introduction and Troubleshooting of RS-485 Communication Interface for Siemens S7-200 PLC

Introduction and Troubleshooting of RS-485 Communication Interface for Siemens S7-200 PLC

Click on the above “ Technical Training ”, select “Pin to Top” 130,000+ industrial control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos 1. Introduction In recent years, computer control has been rapidly promoted and popularized. Industrial control computers, PLCs, frequency converters, touch screens, robots, and flexible manufacturing systems are widely … Read more