Search WeChat Jicheng Training Common input devices for PLCs include buttons, limit switches, proximity switches, toggle switches, dip switches, and various sensors, while output devices include relays, contactors, and solenoid valves. Correctly connecting the input and output circuits is a prerequisite for ensuring the safe and reliable operation of the PLC. 1 Connecting PLC with … Read more
Before understanding the PLC control cabinet, we need to grasp a few requirements. 01 Wiring according to the diagram is the highest principle. First, before wiring, you must carefully read the drawings and fully understand the designer’s intentions, rather than relying on personal so-called rich experience. If there are unclear or contradictory points, you should … Read more
Today, I have gathered some ideas and methods on how to master PLC programming. I hope that after accepting this recommendation, everyone can have a general learning approach to PLC programming and independently apply PLCs to complete programming. 1. Basic Hardware Knowledge Before programming, it’s essential to understand some basic hardware knowledge. It’s best to … Read more
The Programmable Logic Controller (PLC) is a real-time embedded computer designed for industrial control, capable of implementing various logic and process control through dedicated control languages. Centered around PLCs, automated control systems can be constructed for fields such as national defense, manufacturing, rail transportation, electric power, water conservancy, and municipal services. PLC systems have become … Read more
1. Siemens RECRUIT LOGO and S7-200 are ultra-compact PLCs suitable for single machine control or small system control, applicable in various industries and situations for automatic detection, monitoring, and control. S7-300 is a modular small PLC system that can be used for direct control of devices and can monitor multiple lower-level programmable controllers. It is … Read more
Everyone knows that industrial production and technological development are inseparable from the automation control of PLCs. PLC can be broadly understood as: a centralized relay extension control cabinet. In practical production applications, PLC greatly reduces the cost of industrial control and enhances the centralized management and automatic control of equipment. To learn PLC well, it … Read more
Search on WeChat Technical Training Before selecting a PLC, we must first determine the system plan. Once that is established, we can choose the manufacturer and model. Do you know how to make these selections? This article provides detailed introductions from manufacturers and models to input/output (I/O) points, control functions, etc., helping you choose the … Read more
Search on WeChat Tech Training Anyone engaged in electrical work knows that industrial production and technological development cannot do without the automation control of PLCs. PLC can be broadly understood as: a centralized relay extension control cabinet; In actual production applications, PLCs greatly save the costs of industrial control and enhance the centralized management and … Read more
Search WeChat Technical Training Working Principles of PLC Concept of PLC (Basic Components, Working Principles) PLC Data Types & Addressing Methods (This part needs to be clarified, PLC storage size (bit, byte, word, double word BIT BYTE WORD DWORD), types of memory (Siemens DIDQAIAQMSMVLTCHTHC area; Mitsubishi XYMDTCRVZ area), Data types (INT16 DINT32 REAL STRING WORD16 … Read more
(English Full Name Meaning): Instruction Meaning 1 LD (Load): Active Contact 2 LDN (Load Not): Inactive Contact 3 A (And): Used for Series Connection of Active Contacts 4 AN (And Not): Used for Series Connection of Inactive Contacts 5 O (Or): Used for Parallel Connection of Active Contacts 6 ON (Or Not): Used for Parallel … Read more