The RS-232 interface complies with the standards for serial data communication set by the American Electronics Industry Association (EIA), with the original full designation being EIA-RS-232 (abbreviated as 232, RS232). It is widely used for connecting peripherals to computers via serial interfaces. The connection cables and the mechanical, electrical characteristics, signal functions, and transmission processes … Read more
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1Introduction to Serial Ports RS-232, RS-422, and RS-485 are all standards for serial data communication interfaces, initially formulated and published by the Electronic Industries Association (EIA). RS-232 was released in 1962, named EIA-232-E, as an industrial standard to ensure compatibility between products from different manufacturers. RS-422 was developed from RS-232 to address its shortcomings. To … Read more
The SCADA group is used to bridge physical and virtual ports. The physical port, RS-232 serial port, connects to the local control center, while the virtual port, Virtual-Serial, transmits services to the remote terminal unit through PW. Within the SCADA group, it supports data broadcasting from the physical port to multiple virtual ports, and the … Read more
Serial communication is one of the most basic communication methods 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, and RS-485. This article will discuss these concepts to help clarify their relationships. If we compare serial communication to traffic, … Read more
Getting Started with Modbus and Fieldbus (Part 1) In PLC applications, after understanding hardware configuration and logic programming, a significant part of the work involves handling field communication. There are various fieldbus protocols, which actually follow certain patterns. The most commonly seen fieldbus protocol on-site is probably Modbus. When I first encountered Modbus, I also … 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, showing what they look like, where they are used, how to use them, and what their principles are. This article serves as a simple description for beginners. 1. Serial Port 2. UART … Read more
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This article does not explain serial programming but discusses it from an application perspective. More often than not, products are ready, such as touch screens that need to communicate with controllers or PLCs. Ideally, once powered on, communication should be possible without too much operation and configuration. The latter part of the article lists some … Read more
1. First, let’s pronounce the name correctly, what exactly is RS? RS = Recommended Standard, which translates to “recommended standard” and is not a patent of any company. The number following it is the version number: 232: Released in 1962, it’s the grandparent, mainly for computer COM ports; 422: Released in 1975, it’s the uncle, … Read more