Click the blue text to follow us In industrial automation and control systems, the PLC (Programmable Logic Controller) control cabinet is one of the core components. To ensure that the PLC system operates normally during power outages or voltage fluctuations, it is essential to select the appropriate UPS (Uninterruptible Power Supply). Let’s follow the editor … Read more
1. Essential Difference: Not “Old vs New”, but “Physical Layer vs Network Layer” Reconstruction Many people think: “RTU is serial port, TCP is network port – TCP is more advanced.” —— Wrong! They have the same application layer (function codes, register addresses, message structure), the difference is only in “how to transmit”: Physical Medium RS485/RS232 … Read more
According to a report by Reference News on November 18, the Spanish newspaper El Mundo published an article titled “The Capital of Artificial Intelligence and Robotics in China – Marco Polo Once Called It ‘The Most Beautiful and Luxurious City in the World’” on November 15, reported by journalist Lucas de la Calle from Hangzhou. … Read more
Modbus RTU Modbus RTU is a communication protocol used between industrial electronic devices. The main features are: Used in a master-slave network architecture, with one master and multiple slaves, up to 247 slaves. Physical communication lines, typically RS485 or RS422. The master is responsible for message requests, while the slaves respond to these requests, hence … Read more
The National Science and Technology Council (NSTC) of Taiwan held a press conference on September 20, announcing the Taiwan Chip Industry Innovation Program (TCIIP). NSTC Minister Wu Zhengzhong stated that as part of the TCIIP facility upgrade plan, a semiconductor company has expressed interest in donating a 12-inch wafer fab to meet the growing demand … Read more
“The Path of an Excellent Engineer in Three Stages” 1. Basic Stage: Siemens TIA Portal PLC Technology. 2. Intermediate Stage: TIA Portal and C# Advanced Language Technology. 3. Advanced Stage: Standardized Programming Methods for PLCs. The Path of Standardization! Modbus communication is a very open and universal protocol, and it is one of the most … Read more
【Introduction】Starting from version V15 of TIA Portal, the Modbus (RTU) instruction set has been updated to version V4.0 and above. The S7-1200 firmware must be at least version V4.2. This article mainly discusses the new features of Modbus RTU version 4 and above. S7-1200 Motion Control Example Download S7-1500 Analog Module Wiring Diagram PLC Manual … Read more
To understand the communication processes of Modbus TCP and Modbus RTU, we need to consider their frame structures, transmission mechanisms, and master-slave interaction logic. The former relies on the TCP/IP protocol stack for “reliable transmission,” while the latter transmits “binary data” directly over serial ports. The core differences lie in the “data encapsulation” and “link … Read more
Click the “Computer Enthusiast” above to follow us With the college entrance examination approaching, we wish all candidates success and acceptance into their first-choice schools! After getting into college or high school, it’s time to embrace communal living. Communicating with roommates through study or gaming is essential. But when it comes to dorms, many people’s … Read more
1. What is MODBUS?1. Basic Concept MODBUS is a soft communication protocol first advocated by MODICON (now a brand of Schneider Electric), which has gradually been recognized as a standard communication protocol through practical applications by most companies. As long as data communication or transmission follows this protocol, different systems can communicate with each other. … Read more