For more information on RS-485, you can also refer to some previous articles in our series: 1. Please check out this comprehensive RS-485 beginner’s guide!2. From beginner to advanced applications! Say goodbye to using RS-485 without understanding it! 3. What projects to test with RS-485, and how to test them? ▉ Overview of RS-485 RS-485, … Read more
The Modbus protocol is arguably the most widely used communication protocol in the field of industrial automation. Its openness, scalability, and standardization make it a universal industrial standard. With it, products from different manufacturers can be easily and reliably connected to the network, achieving centralized monitoring and decentralized control functions. Currently, the Modbus specifications mainly … Read more
In industrial control, power communication, and smart instrumentation, data exchange often relies on serial communication. Initially, the RS232 interface was the mainstream choice; however, due to the complexity of industrial sites, various electrical devices generate electromagnetic interference that can lead to signal transmission errors. In 1979, Schneider Electric designed and launched a bus protocol specifically … Read more
Follow+Star Public Account, don’t miss wonderful content Author | strongerHuang WeChat Public Account | Embedded Column Recently, some friends asked about Modbus issues. This article briefly describes some common problems with Modbus. You may not know what Modbus is. In fact, Modbus is widely used in real life and is present in almost all industrial … Read more
This article provides an in-depth study of the Modbus RTU protocol. Background Before introducing Modbus RTU, we can understand that Modbus was invented by Schneider Electric in 1979 and is the first truly industrial bus protocol used in the field. More than forty years later, it is still widely used in various industrial control fields. … Read more
Hello everyone, I am Mai Ge. I previously wrote an article about the modbus protocol, which was just a simple introduction. In this article, we will delve deeper into the modbus RTU protocol. 1. Background Before introducing modbus rtu, we can understand that Modbus was invented by Schneider Electric in 1979 and is the world’s … Read more
1. Why Is Serial Communication So Popular? When working on microcontroller products, the most commonly used method is serial communication. For any microcontroller peripherals, the priority is to choose those with serial port functionality, such as Bluetooth modules, WIFI modules, 4G modules, electric meters, and displays. Why Is Serial Communication So Popular? Because it’s simple! … Read more
For business cooperation, please contact QQ: 3350579506 For more exciting consultations, please follow Electrician 365（diangong365） Electrician Home QQ Group: Group ①: 468193845 Group ②: 522898769 1. What is the RS-485 Interface? How Does It Compare to RS-232-C? Answer: Since the RS-232-C interface standard was introduced earlier, it inevitably has some shortcomings, mainly four points: The … Read more
Click on the above blue text to follow us Serial communication is the most basic communication method faced by electrical engineers, and RS-232 is the simplest among them. Many beginners often struggle to understand the relationship and differences between UART, RS-232, RS-422, and RS-485. This article will discuss these concepts to help clarify their relationships. … Read more
The main differences between RS-232 and RS-485 are: 1. The transmission methods are different. RS-232 uses an unbalanced transmission method, known as single-ended communication. In contrast, RS-485 uses balanced transmission, which is a differential transmission method. 2. The transmission distances are different. RS-232 is suitable for communication between local devices, with a transmission distance generally … Read more