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
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
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
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
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
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
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
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
Search on WeChat Technical Training In 1979, Schneider Electric established a bus protocol for industrial sites called the Modbus protocol. Nowadays, many industrial applications using RS485 communication adopt the Modbus protocol. Today, we will explore RS485 communication and the Modbus communication protocol. 1. Introduction In fields such as industrial control, power communication, and smart instruments, … Read more
Last Issue: Cambridge University is hiring postdoctoral researchers with a starting salary of 280,000, valid until October 7 Qinghua University Youth Thousand Talents Program Professor Zhang Pinjia’s research group Long-term recruitment of postdoctoral researchers, with a salary of up to 300,000 Application Requirements: 1. Applicants must be in good health and under 35 years of … Read more