RS485 communication is a commonly used communication method in the industry, widely applied with a simple circuit. Below is a circuit diagram of the 485 interface: This image is one I found online; it is a commonly used circuit. Although many people use it this way and I haven’t heard of any issues, I believe … 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 discusses line load, signal attenuation, fault protection, and current isolation under various headings. 1. Why Balanced Transmission Line Standards Are Necessary The focus of this … Read more
Abstract:This paper introduces the main technical performance requirements of RS-485 bus cables for communication in the 90 ℃ tower solar photothermal power generation mirror field. It elaborates on the material selection and production process control of heat-resistant, cross-linked polyethylene insulated RS-485 bus cables used in the 90 ℃ tower solar photothermal power generation mirror field. … Read more
Search on WeChat Technical Training The RS485 bus has advantages such as simple structure, long communication distance, fast communication speed, and low cost. It is widely used in industrial communication, power monitoring, instrumentation, and other industries. Due to the harsh industrial control environment, there is more interference coupling in the communication lines, which affects the … Read more
RS485 has strong anti-interference capability and low cost, making it widely used in various fields such as industrial smart instruments and communication devices. The RS485 circuit can be divided into non-isolated and isolated types. Among them, the isolated circuit adds isolation performance based on the non-isolated circuit, giving the circuit stronger anti-interference and system stability. … Read more
In industrial automation and monitoring systems, the stability and reliability of data transmission are crucial. RS-485 and RS-232, as two common serial communication standards, each have unique advantages and limitations. Especially in terms of long-distance cable transmission, achieving stable and efficient data communication has always been a focus for engineers. This article will delve into … Read more
Many technicians have the following problems. In fact, aside from the communication methods defined by manufacturers, the most common reasons for communication failure in projects can be summarized as follows: Have you selected the correct communication protocol (Modbus, RS232 free protocol, CANopen, EtherCAT)? Is the communication cable properly made ( RS232 RXD TXD GND RS485 … Read more
Author | Tianrongxin 1. Overview EtherCAT (Ethernet for Control Automation Technology) is a real-time industrial fieldbus communication protocol based on Ethernet, originally developed by Beckhoff Automation GmbH in Germany. It was introduced to the market in 2003, became an international standard in 2007, and became a national standard in China in 2014. The emergence of … Read more
In a previous project, I was involved in the communication between the Yaskawa inverter and the S7-300. However, the available materials at night were all about control words and status words to control the inverter’s start and stop, as well as read some basic parameters. What I needed was to modify the inverter’s parameter values … Read more
Development of PROFIBUS DP data bus cable WANG Hai-ling1, ZHANG Hong-yan2 (1. Anhui Xinke Cable Group Co., Ltd., Wuwei 238300, China; 2. Anhui Zongheng HI-TECH Cables Co., Ltd., Hefei 230051, China) [Abstract]: With the continuous deepening and development of the domestic industrialization process, the demand for industrial automation networks is increasingly extensive. Especially since the … Read more