Computer Major Demystified: EE, CE, CS, SE, CIS, MIS, IT Explained

In this digital age, computer technology has become indispensable in every aspect of our lives. Whether it’s smartphones, smart homes, self-driving cars, or artificial intelligence, computer technology plays a crucial role. So, what are the divisions within computer majors? What do EE, CE, CS, SE, CIS, MIS, and IT stand for? How should students choose … Read more

Explaining Why Pull-Up Resistors Are Added to I2C Signal Lines

Explaining Why Pull-Up Resistors Are Added to I2C Signal Lines

I2C is a two-wire serial communication bus, consisting of an SCL signal and an SDA signal. SCL is the clock signal sent from the master device, while SDA is the data signal, which is bidirectional, allowing devices to send and receive data through the SDA signal. When designing the I2C signal circuit, we add a … Read more

How to Select the Pull-Up Resistor Value for I2C?

How to Select the Pull-Up Resistor Value for I2C?

I2C is a common serial communication interface, which is available on most processors. The I2C interface is an open-drain structure, so pull-up resistors are needed in the design to drive the high level. As shown below: Rp is the pull-up resistor, and the dashed box contains the internal I2C controller structure of the chip (for … Read more

Complete Guide to RS-485 Interface Circuits

Complete Guide to RS-485 Interface Circuits

This design guide discusses how to design RS-485 interface circuits. The necessity of balanced transmission line standards is discussed, along with an example of process control design. The article also covers line load, signal attenuation, failure protection, and current isolation under different headings. 1. Why Balanced Transmission Line Standards Are Needed This article focuses on … Read more

Understanding Siemens PROFIBUS-DP Communication Technology

Understanding Siemens PROFIBUS-DP Communication Technology

Industrial Control Classroom Industrial Control Classroom【www.gkket.com】Essential Website for Engineers Add WeChat:gkket123 Join 500-person WeChat group Electrical Automation – Free Materials Worth Over Ten Thousand Yuan Click to Download for Free (DownLoad) When it comes to Siemens communication, we must mention PROFIBUS. Do you know what it is? How to use it? This article is about … Read more

Differences Between RS-485 and MODBUS

Differences Between RS-485 and MODBUS

Tip:Click above“Ba Fang Hui PLC Practical Programming Training“↑Follow us for free RS485is a wired transmission, which requires a hardware transmission medium, essentially just two wires are sufficient. The actual signal transmitted over these two wires is the same signal; the sending end splits this signal into two, but at the receiving end, it is restored … Read more

18 Classic Questions About RS-485 Serial Communication

18 Classic Questions About RS-485 Serial Communication

BFH Click the blue text to follow us↑↑↑↑ The RS-485 interface forms a half-duplex network, typically using a two-wire system, often employing shielded twisted pair for transmission. This wiring method allows a maximum of 32 nodes to be connected on the same bus topology.Initially, data was output as analog signals for simple process quantities, later … Read more

Detailed Explanation of RS-485 and MODBUS

Detailed Explanation of RS-485 and MODBUS

BFH Click the blue text to follow us↑↑↑↑ RS-485 is a wired transmission, so it requires a hardware transmission medium, which is essentially just two wires. The actual signal transmitted on these two wires is the same; the sender splits this signal into two, but at the receiving end, it is restored to its original … Read more

Detailed Overview of RS-485 Bus

Detailed Overview of RS-485 Bus

A previous article summarized the industrial HART bus, and today we will discuss the RS-485 bus. RS-485 is a widely used communication interface, and this article will cover the key points in detail, with a length of about 5000 words. The Past and Present RS-485, what does RS mean? It stands for Recommended Standard, which … Read more

Important Considerations for Implementing CANopen Bus

Important Considerations for Implementing CANopen Bus

CANopen is a high-level protocol based on CAN, which is widely used in various automation control systems. CANopen networks use twisted pair cables to transmit differential signals, but factors such as poor electromagnetic environment, non-standard wiring, and unreliable grounding in domestic industrial sites can directly affect communication quality and interfere with bus operation. To ensure … Read more