PLC Programming Algorithms (1) γγIn PLC, there are three main types of signals: digital signals, analog signals, and pulse signals. Once you understand the relationship between these three, you can master PLC programming. γγ1. Digital signals, also known as logical signals, refer to signals that have only two values: 0 or 1, ON or OFF. … Read more
In the world of PLCs, all signals can be divided into two main categories: Digital and Analog. They are the “left hand and right hand” of PLCs in perceiving and controlling the external world, and understanding the difference between the two is crucial. 1. Digital: The Black-and-White ‘Switch’ Signal Core Characteristics: There are only two … Read more
Click the blue text above to follow us Embedded Training – Choose Jufeng Zhilian In the I/O (Input/Output) interface of the STM32 microcontroller (MCU), the Schmitt Trigger is a key functional module primarily used to enhance the stability of input signals, suppress noise interference, and ensure reliable recognition of digital signals. The following are its … Read more
Analog and Digital Signals In the process of industrial production control, it is often required to control some physical quantities such as temperature, pressure, flow, etc. These physical quantities change continuously over time, and any value during this continuous change is a specific and meaningful physical quantity. These physical quantities that change continuously over time … Read more
First, let’s understand what digital and analog signals are?Why do PLCs need to use analog signals? Digital Signals Digital signals are a type of physical quantity. Their changes are discontinuous over time, occurring only at a series of discrete moments. This type of physical quantity is called a digital signal. It refers to quantities that … Read more
In the contemporary information technology system, embedded system interfaces serve as the core infrastructure for data exchange, forming the neural hub for device interconnection. Based on standardized communication protocols and interface specifications, the technical architecture enables efficient data exchange and intelligent collaborative operations among heterogeneous devices. This article selects the Analog-to-Digital Converter (ADC) interface as … Read more
The oscilloscope is the most common instrument for electronic engineers, and many people compare it to the “eyes” of an engineer, which is enough to illustrate how important oscilloscopes are to engineers. How is the signal displayed on the oscilloscope screen? On the oscilloscope, the signal is transmitted through a series of resistors and capacitors … Read more
A logic analyzer is an instrument used to simultaneously capture, display, and measure multiple electronic signals in digital circuits. Logic analyzers can show the relationships and timing between many different signals in digital systems and are often capable of analyzing digital communication protocols such as I2C, SPI, and serial. Therefore, logic analyzers are the best … Read more
0x01 Introduction Recently, I purchased a logic analyzer. I had limited exposure to digital signals and inter-chip communication before, but I have been studying these topics intensively over the past few days and now I would like to document my findings for future reference. 0x02 What is a Logic Analyzer Introduction to Logic Analyzers A … Read more
The Raspberry Pi is a microcomputer the size of a credit card, capable of running Linux and Windows 10 operating systems. Despite its small size, the Raspberry Pi is powerful and highly expandable, truly embodying the saying, “Though the sparrow is small, it has all the vital organs.” However, many friends buy a Raspberry Pi, … Read more