Understanding TCP/IP: Common Confusions and Insights

Understanding TCP/IP: Common Confusions and Insights

The TCP/IP technology, considered one of the great inventions of the Internet era, has profoundly impacted today’s world. After nearly a month of study and exploration, I have a basic understanding of TCP/IP. Since TCP/IP operates in kernel mode within the OS, many details are not perceptible to users, leading to some confusion about TCP/IP. … Read more

The Ming Dynasty’s Cabinet and TCP/IP Design

The Ming Dynasty's Cabinet and TCP/IP Design

This article is a prequel to “The Ming Dynasty Postman of TCP/IP”, discussing how the ministers of the Ming Dynasty’s cabinet designed the TCP/IP network. During the Tianqi period of the Ming Dynasty, Emperor Zhu Youjiao was obsessed with carpentry and heavily relied on the eunuch Wei Zhongxian, having not attended court for a long … Read more

Mastering TCP/IP: A Comprehensive Guide

Mastering TCP/IP: A Comprehensive Guide

From: Juejin, Author: Ruheng Link: https://juejin.im/post/6844903490595061767 1. TCP/IP Model The TCP/IP protocol model (Transmission Control Protocol/Internet Protocol) consists of a series of network protocols that form the foundation of the Internet and are the core protocols of the Internet. The reference model based on TCP/IP divides protocols into four layers: Link Layer, Network Layer, Transport … Read more

Detailed Explanation of TCP/IP Communication Based on Ethernet

Detailed Explanation of TCP/IP Communication Based on Ethernet

Basic Concepts of Ethernet Before performing Ethernet communication, it is necessary to understand several basic concepts of Ethernet communication, such as IP address allocation, PC network address and settings, etc. Allocating IP Address If the programming device (such as PC) connects to the factory LAN (or the Internet) using a network card, then the programming … Read more

The TCP/IP Protocol That Changed the World

The TCP/IP Protocol That Changed the World

1. Introduction As application layer developers, the network protocol we most often encounter is typically the transport layer’s TCP (another important protocol at this layer is UDP). However, when it comes to the IP protocol, application programmers are more familiar with the concept of an IP address, and it becomes difficult to delve deeper. This … Read more

Summary of TCP/IP Basics

Summary of TCP/IP Basics

When it comes to the protocols we encounter most in computer networks, we cannot ignore the TCP/IP protocol. The TCP/IP protocol is also the most famous protocol on the Internet, so let’s discuss the TCP/IP protocol together. Historical Background of TCP/IP Before the TCP/IP protocol existed, back in the 1960s, many countries and regions recognized … Read more

How CANopen Master Accesses Modbus Device Data

How CANopen Master Accesses Modbus Device Data

PXB-6021 is a Modbus to CANopen protocol converter launched by ZLG Zhiyuan Electronics, featuring 1 CAN channel, 1 100M Ethernet, and 1 RS485. This product supports Modbus RTU and Modbus TCP, enabling data conversion from Modbus master to CANopen slave. The PXB-6021 supports up to 12 groups of TPDO and 12 groups of RPDO, and … Read more

Controlling LXM28 with M241 via Canopen

Controlling LXM28 with M241 via Canopen

Modicon M241 is a compact, high-performance, and scalable mid-range PLC, fully embodying Schneider Electric’s concept of “flexible device control.” It is designed specifically for industrial control applications, primarily targeting engineering project applications, providing high-performance electrical control solutions for logical control, speed control, positioning control, and complex network construction. Lexium 28 is a newly launched bus-type … Read more

Introduction to Schneider Canopen Products

Introduction to Schneider Canopen Products

Canopen is an open and widely used fieldbus. This article mainly introduces the various products from Schneider that support Canopen communication. Canopen Master Stations: Twido, M238, M258, M241, M251, LMC058/LMC078, M340, Premium (The number of supported slave devices varies for each master station; please refer to the manual for details.) Canopen Slave Stations: ATV312/61/71 IMC … Read more

Application of Integrated Servo Motor with CANopen Communication on Huichuan H5U PLC (Part 1)

Application of Integrated Servo Motor with CANopen Communication on Huichuan H5U PLC (Part 1)

Click the blue text above to follow us This article introduces the use of Limasen’s CANopen communication integrated low-voltage servo motor on the Huichuan H5U PLC. This part mainly explains the setup of the environment and the debugging functions provided by the software. 1. System Composition The main components of this system are a computer, … Read more