In the realm of industrial automation, the PLC control system is hailed as the “smart brain” of equipment, precisely directing the operation of each machine. However, just like any powerful “brain,” a PLC can occasionally experience discomfort, and it inevitably encounters various faults during actual operation. If not addressed promptly, this can lead to production … Read more
In Linux systems, port management is a crucial aspect of network service configuration and troubleshooting. When multiple services attempt to bind to the same port, or when it is necessary to confirm whether a service is running properly, quickly locating the Process ID (PID) that occupies a specific port is a key operation. This article … Read more
With the popularity of online education platforms, Kehou has become a comprehensive service platform focused on K12 education, favored by many students and parents due to its rich course resources and convenient learning features. To help new users get started quickly, this article will provide a detailed introduction to the official login portal of Kehou … Read more
Note: This article only provides a process description for certain users’ consumption functions and does not serve as promotional guidance.Disclaimer: The content of this article is time-sensitive; please refer to the latest official guidelines for specific operations. 1. Preparation Before Login: Laying the Foundation for Smooth Operations Confirm Device and Network Environment It is recommended … Read more
Click the blue “Most Programmer” to follow me! Add a “Star“, every day at 18:03 to learn technology together! In-Depth Analysis of Linux Network Packet Loss 1. Background: From the image, you can see the potential locations where packet loss may occur, which actually spans the entire network protocol stack. In other words, there is … Read more
Common “Difficulties” in the Field One of the most troublesome issues during device debugging: RS-485 communication is unstable, with intermittent data transmission. The program logic is fine, the cable connections are correct, and there are no address conflicts, yet communication timeouts, data corruption, and sporadic failures still occur. Changing cables, adjusting baud rates, and checking … Read more
Fault Diagnosis: Common Causes of Siemens PLC Program Freezing and Quick Troubleshooting Methods As an automation engineer, I cannot count how many times I have been called to the site to handle the issue of “the equipment suddenly stopped working.” In most cases, this is related to the PLC program freezing. Today, I will share … Read more
A single misoperation caused the server to lose network connectivity for 3 hours, simply due to a lack of understanding of the differences in network card configuration across different Linux versions. In the field of Linux operations, incorrect network card configuration is the primary cause of server network failures. According to the 2024 Operations Failure … Read more
As a hardware engineer, have you ever encountered these issues: The circuit board shows no response after power is applied, like a “brick”. The program occasionally starts, but sometimes hangs. Peripheral initialization is abnormal, yet the code logic is correct. These issues stem from startup process anomalies 80% of the time! Let’s learn about the … Read more
The troubleshooting steps for a PLC (Programmable Logic Controller) typically follow a systematic and detailed process to ensure accurate and efficient identification and resolution of faults. Below is a comprehensive guide to PLC troubleshooting steps: 1. Preliminary Observation and Assessment 1. Observe Appearance and Indicator Lights: ● Check the PLC device for any visible physical … Read more