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
The Concept of Levels: What are voltage, current, and power? Radio enthusiasts are well aware of these. However, when it comes to the term “level”, few can explain it clearly. Although people frequently encounter high levels, low levels, level gain, and level attenuation in circuits, and even multimeters essential for electricians have methods for measuring … Read more
1. RS-232-C is a serial physical interface standard established by the Electronic Industry Association (EIA) in the United States. RS is the abbreviation for “Recommended Standard,” 232 is the identification number, and C indicates the revision number. The RS-232-C bus standard has 25 signal lines, including one main channel and one auxiliary channel. In most … Read more
A few days ago, I saw discussions in my technical group about the topic of “TTL, RS232, and RS485 transmission distances“. Today, I took some time to share relevant content. Overview Many readers might not know what TTL, RS232, and RS485 are, so this section provides a brief overview of them. 1. TTL Level TTL: … Read more
As a fashionable tech youth, there are several products in life that enhance personal charm: Bluetooth headphones, Bluetooth mice, Bluetooth speakers, smart wristbands… Just buying one, even if you haven’t started using it, makes you feel like your life has instantly leveled up in style and technology. A certain company abroad produces Bluetooth tampons, you … Read more