For more exciting content, click to follow “PLC Enthusiasts” The Siemens S7-1200 can communicate via Modbus RTU through communication modules, with the PLC serving as the controller, typically acting as the Modbus master. When functioning as a Modbus master, it generally polls parameters from multiple slave devices. This article introduces the timed polling program for … Read more
Click đ above to follow Engineer Yan Ji and â starâ . Protocol Definition 1. Modbus is a request-response protocol implemented using a master-slave relationship. 2. The Modbus protocol introduces different application data units to change the packet format used in serial communication or to allow the use of TCP/IP and User Datagram Protocol (UDP) networks. Its … Read more
How to determineif a Modbus TCPconnection is established? Answer: To performModbus TCPcommunication, a connection must be established. S7-200 SMART CPUas aModbus TCPclient: You can determine the connection status using the Modbus TCP Client instruction’s symbol table parameter mConnected, as shown in Figure 1. If mConnected=1, it indicates that the connection has been established, while mConnected=0 … Read more
Introduction In low-power applications, it is sometimes necessary to put the MCU into STOP mode to save power. In some chip architectures, to achieve this, the serial port pins are often configured as general I/O pins with external interrupt mode before entering low-power mode. While this can achieve the desired effect, it inevitably leads to … Read more
In the complex world of electronic circuits, various circuit module devices need to communicate with each other to work together. The I2C interface acts as a communication bridge between these circuit module devices, and today we will take a deep dive into it. 1. Starting with a Physical Example The image below shows an I2C … Read more
It’s very simple to understand can and cannot. Have you ever thought about whether you are using them correctly? In fact, the simpler the words, grammar, and structures in English, the more we can grasp the fundamental differences between English and Chinese grammar. So today, let’s review and update your understanding and mastery of can! … Read more
Produced by Zhien Intelligent Chip With the rapid development of sensors, electronic devices, and artificial intelligence technologies, mobile robots are evolving from single-function automation tools into complex systems with high autonomy and intelligence. Based on NXP’s “Exploring Mobile Robotics: Real-Time Control, Autonomy, and Performance Optimization,” we will examine the four enabling technologies for mobile robotsâedge … Read more
The RS-485 bus is widely used in communication, industrial automation, and other fields. In practical applications, it is common to encounter questions about whether pull-up and pull-down resistors are needed and what resistance values are appropriate. Below, we will analyze these issues in detail. 1. Why are Pull-Up and Pull-Down Resistors Needed? 1) When the … Read more
M-Bus Master to PROFIBUS DP Slave – adfweb Converter-HD67053 Author: Zou Wuyi Mobile185-020-77899 Email: [email protected] 1 Product Features: âHD67053-B2-xxxâ is a M-Bus Master Converter for converting between the PROFIBUS DP bus and the M-Bus . It has the following features: Electrical isolation between PROFIBUS and M-Bus ; Can be mounted on a 35mm DIN rail; … Read more
It is common to encounter situations in industrial settings where devices have dozens of sensors and actuators, each requiring individual wiring to the PLC. This not only takes a long time to wire but also increases the chances of errors, making troubleshooting particularly challenging later on. Today, let’s discuss AS-Interface bus technology, a fieldbus solution … Read more