Want to dive into the world of audio playback in electronic products? To help you get started, we recommend the HSC001 module. This is a 24-bit audio player with many excellent features: size, price, etc. You can use it for various purposes: playing music in elevators, generating sounds for various devices, and more. In this … Read more
It has been nearly two weeks since I last wrote a record. Who knows what I have experienced during this time? With a somewhat heavy heart, I document a recent pitfall I fell into. The heaviness comes from the fact that this pitfall was caused by a very, extremely basic mistake, and such a basic … Read more
1. Introduction In previous articles, we developed applications that were embedded into the kernel within initramfs. Each time we needed to change the application, recompiling the kernel was cumbersome. Now, we will port lrzsz to enable file import and export via the serial port, making it easier to update applications by importing them into the … Read more
‖ System Learning Life is like a marathon; sometimes you need to pause and take a breather to go further. In this issue, we will discuss what RS232 is, a term frequently heard in the industry, especially in the industrial control sector. What is RS232? It is a form of serial data transmission, simply put, … Read more
Click to follow and stay on track in your learning journey! Last time, we delved into the core elements of the MODBUS protocol. I wonder if you have memorized those key points and successfully established a foothold in the world of MODBUS? If you haven’t fully digested the information yet, make sure to review it … Read more
In the vast realm of industrial automation, the PLC (Programmable Logic Controller) serves as a core figure, while PLC communication is the crucial link connecting various “combat units.” However, for many newcomers to the PLC field, the myriad of communication methods can seem like a fog, leaving them bewildered. Don’t worry, today we will embark … Read more
In SIEMENS industrial communication, the most commonly used methods are Serial; Profibus; MPI; and Ethernet communication. The maximum communication distances for each are described in the table below. Serial Communication Type Rate Maximum Distance RS 232C 300~115200bps 15 m 20 mA TTY 9600 bps 1000 m 19,200 bps 500 m 422/485 115.2 kbps 250 m … Read more
Abstract ❝ This article describes how to use C# to call the NModbus4 library and the System.IO.Ports library to implement Modbus RTU communication functionality【Project address at the end of the article】. Introduction Modbus RTU is a serial communication protocol, where the communication mechanism is a polling mechanism where the master device sequentially queries the slave … Read more
This section discussesserial communication and the basic theories of communication. 1. Preliminary Knowledge of Serial Ports 1. Classification of Serial Ports A serial port is a widely usedcommunication interface, characterized bylow cost, ease of use, and simple communication lines, allowingtwo devices to communicate with each other. Note: Only two devices can be connected. The microcontroller’s … Read more
1. RS-232 is a serial communication interface standard, originally established by the Electronic Industries Association (EIA) in the 1960s, aimed at providing a standardized communication interface for computers and their peripheral devices. With the continuous development of computer technology, the RS-232 interface has been widely used and has become one of the most common communication … Read more