Typically, we use serial ports for direct broadcasting and switching control of video servers, recorders, and switchboards, mainly utilizing RS-232, RS-422, and RS-485 interfaces. Below we will discuss the serial port interface standards, usage, and external plugins and cables. The RS-232, RS-422, and RS-485 standards only specify the electrical characteristics of the interfaces, without involving … Read more
Click the above “Follow Electronics” for easy learning of electronic knowledge. Follow Electronics Subscription Account Daily updates of technical articles in the electronics industry and the latest information on microcontrollers, making it easy to learn anytime, anywhere. <RS232 and RS422 Interface Circuits> 1. RS-485 The RS-485 bus is widely used when communication distances range from … Read more
Today, I will share with you some common interfaces and communication protocols of Siemens PLC. The first major question: The difference between RS232 and RS485 interfaces 1. Physical structure of interfaces 1. RS232 interface: One of the computer communication interfaces, the RS-232 interface typically appears in the form of 9 pins (DB-9) or 25 pins … Read more
Search WeChat Jicheng Training JICHENGPEIXUN Serial port, short for serial port interface, is also known as serial communication interface or COM interface. Serial communication refers to a communication mode that uses a serial communication protocol to transmit data bit by bit over a single signal line. Serial ports are classified according to electrical standards and … Read more
RS-232, RS-485, and RS-422 often encounter various serial communication issues during on-site debugging, such as communication connection problems between different ports like RS-232, RS-485, and RS-422. Typically, conversion between RS-485 and RS-422 is quite convenient. However, when communicating between RS-232 and RS-422 ports, if there are no other conversion methods available on-site, and mailing could … Read more
Search WeChat Technical Training 01 Network Cable Let’s briefly discuss network cables. Most people are familiar with network cables, and different specifications of cables have different transmission distances. Network cables transmit network signals, and if the distance exceeds the cable’s capacity, the signal will degrade, leading to potential network interruptions. Category 5 and Category 6 … Read more
WeChat Search Skill Training When electrical workers use PLCs, they will encounter many communication protocols and communication interfaces. Do you understand the most basic PLC serial communication and basic communication interfaces? 01 What is Serial Communication? Serial communication is a very common device communication protocol on computers (do not confuse it with Universal Serial Bus … Read more
1 The Origin of Serial Ports The serial port emerged around 1980, with data transmission rates ranging from 115kbps to 230kbps. Initially, the serial port was designed to connect computer peripherals, such as mice, external modems, old cameras, and graphics tablets. It can also be used for interconnecting two computers (or devices) for data transmission. … Read more
Follow “Technical Training” focused on automation education for 14 years UART, I2C, RS485… These communication methods are widely used, but their explanations can be ambiguous. Therefore, I feel it is necessary to organize them for clarification and differentiation. The article is a bit long, so I suggest saving it for later reference when needed. UART … Read more
[Disclaimer] The images and text are sourced from the internet. If there is an infringement, please contact us for removal! Serial communication is a commonly used communication method in PLC networks. Choosing the correct interface type and protocol standard is crucial for ensuring communication reliability. The RS-232 interface complies with the serial data communication interface … Read more