HCIE Certification Research Institute | Huawei Certification Exam Tracking Today, I want to share some basics. Many people have gained some understanding of Huawei certification exams and want to further understand the specific exam content. This article will first discuss the specific exam outline for HCIA-Datacom~ 01 Huawei HCIA-Datacom Certification Exam 02 Huawei HCIA-Datacom Exam … Read more
Today, I will share with you some common knowledge points about TCP network, which you will often encounter in daily work or interviews. Considering the length of the content, I suggest you bookmark it and digest it slowly. If it helps, please share it with your friends; “It’s better to enjoy together than to enjoy … Read more
Light Topic CC teacher shares the cornerstone coding + graphics technology explanation for live development. Tonight is the last day to sign in, don’t waste your efforts! If you complete the sign-in tonight, you can receive the full set of iOS skill expansion videos after class. Tonight at 8:30, a detailed explanation of the above … Read more
Click the blue textFollow me! ☀The Jicheng WeChat platform has become an invaluable mentor for industrial control students. Follow Jicheng, and technical improvement is guaranteed! QQ consultation: 4001114100 Source: Jicheng Training Network (Teacher Liang Zhibin) ▏Siemens S7-200 Series 17 1.6.4 Network Wiring For RS485 networks such as PPI, MPI, and Profibus, it is recommended to use … Read more
Background Currently, many universities implement a one-device policy in dormitories, where each person must have their own internet connection, and only two devices are allowed to connect. This is said to be for better network management and to trace individual usage. However, it is quite absurd, as the internet fees are high, and usage is … Read more
Prerequisites The host must support intel virtual technology, which is Intel’s virtualization technology. You can check and set this in the BIOS. If you encounter the following image during the installation of openwrt, it indicates that the settings were not configured or were configured but not saved. Installing VMware We go to the official website … Read more
Introduction PLC comes in various sizes, hence its control range can also vary. Smaller PLCs might only control a single device, or even a component at a site; larger ones can control multiple devices, an entire production line, or even an entire factory. It can be said that PLCs are indispensable in both large and … Read more
1. Used for Discrete Control The ability of PLC to control discrete signals is very strong. The number of input and output points can range from a few dozen to several hundred, even thousands or tens of thousands. Because it can be networked, the number of points is almost unlimited, and it can control any … Read more
The RS485 interface consists of a half-duplex network, typically using a two-wire system, often employing shielded twisted pair cables for transmission. This wiring method allows a maximum of 32 nodes to be connected on the same bus in a bus topology. Initially, data was output as an analog signal for simple process quantities, and later, … Read more
In engineering, the RS485 control line is often mentioned. What exactly is it? Today, let’s discuss the applications related to RS485. By delving deeper into RS485, you will find that there is indeed a lot of knowledge involved. We will choose some common issues that need to be considered in weak current systems for everyone’s … Read more