1. Architecture The TCP/IP protocol suite is a four-layer protocol system. Figure 1 TCP/IP Architecture Data Link Layer: Implements the network driver for the network interface card, handling the transmission of data over physical media (Ethernet, Token Ring). The network driver abstracts the electrical characteristics of different physical networks. The data link layer uses ARP … Read more
Finally, I have come to the TCP protocol, which is the most important and exciting part of TCP/IP detailed explanation, and it requires significant effort to read. Brief Introduction TCP and UDP are at the same layer— the transport layer. However, the most significant difference between TCP and UDP is that TCP provides a reliable … Read more
Introduction This article covers the basics of the TCP/IP protocol, focusing on the content, functions of the TCP/IP protocol suite, and foundational knowledge related to the three common network protocols: TCP, UDP, and IP. Content The TCP/IP protocol suite is developed from the OSI seven-layer model. The existence of the OSI reference model has the … Read more
Click on the “Five-Minute Algorithm Learning” above to select the “Star” public account Heavyweight content delivered first-hand From: Juejin, Author: Ruheng Link: https://juejin.im/post/6844903490595061767 1. TCP/IP Model The TCP/IP protocol model (Transmission Control Protocol/Internet Protocol) includes a series of network protocols that form the foundation of the internet and is the core protocol of the Internet. … Read more
Click the “Five-Minute Algorithm Learning” above and select the “Star” public account Heavyweight content delivered first time When it comes to the protocols we encounter most in computer networks, we cannot ignore the TCP/IP protocol, which is also the most famous protocol on the Internet. Let’s talk about the TCP/IP protocol together. Historical Background of … Read more
What Are TCP Segmentation and IP Fragmentation We know that a network is like a pipe, and pipes can have different diameters. When a data packet wants to travel from one end of the pipe to the other, it must pass through this pipe. (Obvious, right?) However, the size of data packets can be varied, … Read more
For more content, please click above to follow ABB Robot Practical Skills You can also click on the public account below Classic Articles to browse more content For reprints, please leave a message in the background first, let’s support original content together and promote the use and development of robots This public account provides technical … Read more
11.7 Modbus TCP Programming and Experimentation This course does not support sensors that use the Modbus TCP protocol, so we will write two programs: ① modbus_server_tcp.c: Simulate a Modbus TCP sensor ② modbus_client_tcp.c: Operate the sensor The program structure is shown in the figure below: No special connections are required on the hardware. The source … Read more
Industrial Automation Group Knowledge sharing and mutual assistance Join Now When we talk about the communication protocols between automation devices (such as PLCs, temperature controllers, etc.) and computers, ModBus is a widely used communication protocol. ModBus supports various communication methods, including ModBus RTU, ModBus ASCII, and ModBus TCP. Each communication method has its unique characteristics … Read more
Modbus is widely used due to its advantages The Modbus protocol is standard, open, publicly available, and has no copyright requirements The Modbus protocol supports various electrical interfaces, including RS232, RS485, TCP/IP, and can transmit over various media such as twisted pair, fiber optics, infrared, and wireless The Modbus protocol message frame format is simple, … Read more