When it comes to the work of electricians, the older generation relied on abacuses and notebooks. To calculate loads, they would simply draw a line with a pen; to change wiring, they would manually sketch a wiring diagram. Later, relays were strung together like beads on an abacus, where any movement would trigger a response, … Read more
Imagine an automated factory: conveyor belts operating precisely, robotic arms moving freely, production lines running 24/7… Who is giving the orders behind this orderly operation? Is it a group of engineers frantically operating computers in the background? No! The real conductor is a metal box called PLC. It is the “strongest brain” in the field … Read more
In modern industrial automation systems, interconnectivity between devices is core. Whether for data acquisition, remote control, or production management, an efficient and stable communication system is essential. From the underlying physical interfaces to protocol standards, and up to the upper-level HMI and SCADA application software, industrial communication has gradually developed a complete architecture. Today, we … Read more
Screenshots of Electronic Books in the 400G Collection
1. Wiring according to the diagram is the highest principle, and this cannot be overstated. First, before wiring, one must carefully read the drawings and fully understand the designer’s intentions, rather than relying on personal so-called rich experience. If any unclear or contradictory points are found, one should immediately contact the designer for confirmation, and … Read more
Click the blue text above to follow us01Introduction: The Industrial Value of PLC and Offset Registers In the central control room of an industrial automation production line, Engineer Xiao Wang is troubled by the dense ladder diagrams on the screen—he needs to sum and display the real-time data from 10 temperature sensors. Using traditional programming … Read more
Recently, a project owner required MODBUS TCP/IP, with hardware consisting of S7-1200 and KTP1200 panel. The owner was unable to provide the IP subnet during the project implementation phase, thus a solution was needed to modify the PLC and panel IPs on-site:This can be divided into three steps: modifying the PLC IP, modifying the connection … Read more
Indexing: An address where the data storage location can change; for example, D0Z0: if Z0 equals 0, then D0Z0 is equivalent to D0; if Z0 equals 2, then D0Z0 is equivalent to D2. This is similar to an array.Why use indexing? It simplifies the program, making complex and cumbersome programs easier to manage;For example: Real-time … Read more
Functions of PLC Control Cabinets The PLC comprehensive control cabinet has protective functions such as overload, short circuit, and phase loss protection. It features a compact structure, stable operation, and complete functionality. It can be combined according to the actual control scale, allowing for both single cabinet automatic control and multiple cabinets to form a … Read more
PLC Programming Algorithms (1) In PLC, there are three main types of signals: digital signals, analog signals, and pulse signals. Once you understand the relationship between these three, you can master PLC programming. 1. Digital signals, also known as logical signals, refer to signals that have only two values: 0 or 1, ON or OFF. … Read more