Introduction In industrial control sites, there exists a fundamental yet easily overlooked aspect that all devices rely on—serial ports. So, what is a serial port? Is there a risk associated with serial communication? Qi’an Technology’s classroom provides answers and details how to conduct safe offense and defense regarding serial ports. What is a Serial Port … Read more
When using PLCs, you will encounter many communication protocols and communication interfaces. 01 What Is Serial Communication? A serial port is a very common device communication protocol on computers (do not confuse it with Universal Serial Bus or USB). Most computers have two RS232-based serial ports. The serial port is also a common communication protocol … Read more
Serial Communication My Diary 2024 Is the most basic communication method faced by electrical engineers, with RS-232 being the simplest among them. Many beginners often struggle to understand the relationship and differences between UART and RS-232, RS-422, RS-485. This article will discuss these concepts to help clarify their relationships. If we compare serial communication to … Read more
Electronic products, such as computers, mice, chargers, and even cars, have many interfaces around us. This article will introduce you to these interfaces, what they look like, where they are used, how to use them, and their principles. This article serves as a simple description for beginners. 1. Serial Port 2. UART 3. TTL Level … Read more
First, it should be understood what a bus is. According to Baidu’s complete definition: a bus is a common communication line for transmitting information between various functional components of a computer, composed of wire transmission lines, classified according to the types of information transmitted by the computer. In fact, a bus is an internal structure … Read more
Serial communication is one of the most basic communication methods faced by electronic engineers. Although it seems simple, many people are not clear about the subtle differences between UART, RS-232, RS-422, and RS-485. Hope this engineering note can help everyone sort out their relationships. Communication issues, like traffic issues, also have various situations such … Read more
Image Source: www.parlezvoustech.com 1. Common Hardware Communication Protocols? Serial Communication Protocols UART (Universal Asynchronous Receiver Transmitter)： An asynchronous serial communication protocol that does not require a clock signal, commonly used for simple point-to-point communication. SPI (Serial Peripheral Interface)： A synchronous serial communication protocol, typically used for high-speed communication between microcontrollers and external devices such as … Read more
This article introduces the basic concepts of the serial communication protocols RS-232, RS-422, and RS-485, including baud rate, data bits, stop bits, parity bits, and handshaking information. 1. What is Serial Port? The concept of serial communication is quite simple. Serial ports send and receive bytes one bit at a time. Although it is slower … Read more
01 【Common Ground】 RS-232, RS-422, and RS-485 all belong to UART, which stands for Universal Asynchronous Receiver/Transmitter. They can complete the communication process using only two signal lines (Rx and Tx); However, due to the different voltage levels used by each, when converting from UART to RS-232, RS-422, or RS-485, a chip such as SP3232E … 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