Original: https://www.cnblogs.com/3echo/p/11612560.html The Internet of Things (IoT) is not just a new technology, but also an integration with old technologies, where communication is key. Various communication methods differ, but various protocols play a vital role in connecting vast numbers of “things” to the internet.This article introduces two complementary IoT protocols: the local protocol Modbus for … Read more
Continuing from the previous article, If you haven’t read the introduction, please click the link below ▼ Essentials丨Introduction to Fieldbus Starting with Modbus! Recommendation丨Introduction to Fieldbus Starting with Modbus! Introduction to Fieldbus Starting with Modbus (Part 5) Previously, we introduced the Modbus serial bus and mentioned the terminal resistor issues of RS485/422, and touched on … Read more
Follow the WeChat public account “Automation Control System Communication” to learn about the principles of automation control systems and master knowledge about automation control systems. Click on the blue “Automation Control System Communication” above to follow us. We often see RS485 and MODBUS mentioned together. What are their differences and connections? RS485 is a physical … Read more
Previously, I worked with microcontrollers and various models of frequency inverters including Mitsubishi D700, Siemens G120, Omron 3G3JZ, Panasonic VF200, Delta VFD-M, Xinjie VB3, Yonghong FID-B10, ChuanDian IS7, Huichuan MD500, Inovance Goodrive10, Schneider ATV12, Haiwei E, HoliTime HGD303, Tai’an F510, Hexin F2A, Rockwell PowerFlex-4, Fuji FRENIC-VP, Boke CV20, Yaskawa A1000, and Weichuang Artrich-AR60T. Most of … Read more
Modbus RTU Communication Overview of Modbus RTU Communication In modern highly integrated industries, communication between PLCs is often used. Common communication protocols include Modbus, Profibus DP, Profinet, CANOPEN, etc. Today, we will explain how to perform Modbus RTU communication between two PLCs using Siemens TIA Portal. Before establishing communication, we must meet the following software … Read more
Getting Started with Modbus and Fieldbus (Part 1) In PLC applications, after understanding hardware configuration and logic programming, a significant part of the work involves handling field communication. There are various fieldbus protocols, which actually follow certain patterns. The most commonly seen fieldbus protocol on-site is probably Modbus. When I first encountered Modbus, I also … Read more
Click the blue text Follow us Sometimes we have too many messages from public accounts that we like, and we miss some of our favorite messages and cannot see the posts from the industrial control forum in time. We can star or pin the public account. So how do we star and pin it? 【Open … Read more
For more content, please click on the above ABB Robot Practical Skills to follow us. You can also click on the public account below Classic Articles to browse more content. Please leave a message in the background before reprinting, let’s support original content together and promote the use and development of robots. This public account … Read more
1. Introduction HMI (Human-Machine Interface) is increasingly used in industrial automation systems and equipment due to its small size, high performance, and strong real-time capabilities. It features various displays such as letters, Chinese characters, graphics, and images, with a simple and user-friendly interface. Equipped with long-lasting membrane button keyboards, it is easy to operate. Typically, … Read more
-Begin- Introduction Recently, students studying motion control asked whether it is possible to read data from the motion control card using the Modbus protocol. After testing, it is indeed feasible. The ECI1408 board from Zhengyundong is used here; other brands may not support it, so please consult your supplier for specifics. Modbus Protocol The Zhengyundong … Read more