In industrial sites, various analog sensors such as pressure, displacement, temperature, flow, and speed differ in their design and technical methods. The power distribution methods for sensor operation are mainly divided into two-wire and four-wire systems, and the output analog signals also vary, with common signals being 0-20mA, 4-20mA current signals, and 0-75mV, 0-5V, 1-5V … Read more
“PLC Device Coordination: Cross-System Collaboration Solutions, Boosting Production Efficiency by 80%, Boss Calls It Professional!” Have you ever been driven crazy by the “information islands” on the production line? Guess what? Yesterday, Old Zhang’s food factory had another fryer explosion—the PLC of the packaging line was outputting wildly, while the PLC of the filling line … Read more
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Click the blue textto follow us Introduction This chapter mainly introduces the basic structure and application characteristics of Siemens S7-1200 series Programmable Logic Controllers (PLCs), providing a detailed explanation of its programming environment and applications, along with typical instruction programming methods through examples, and discusses the main issues to consider in PLC application design. The … Read more
【Action Description】 As shown in Figure 2-5-1, a sewage tank is equipped with two sewage pumps for the discharge treatment of sewage, with the following specific control requirements: 1) Long press the start button for 3 seconds to start the device, the running indicator light Y1 (green light) will light up. Press the button a … Read more
Step control in programming is a very common control method in industrial automation, suitable for sequential execution of process flows. Unlike continuous control, step control allows industrial processes to execute in predetermined steps, ensuring that each process action is completed at the correct time. This article will detail seven practical programming methods for step control, … Read more
Dear colleagues! Today, let’s discuss a particularly strange yet very real issue. The PLC field is currently facing an unprecedented “talent shortage” for high-paying positions. Isn’t that odd? According to data from the Ministry of Industry and Information Technology, by 2025, the talent gap in our country’s intelligent manufacturing sector could reach 4.5 million! That’s … Read more
Click↑↑Technical Training, follow and pin it to subscribe for free long-term Over 180,000 industrial control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos The PLC, a replacement for contactor distribution cabinets and relay control cabinets, has become widely popular in the development of automated production. To help everyone better understand PLC … Read more
Behind the temptation of a “monthly salary exceeding 10,000”, there is the anxiety of countless practitioners: “Can electrical engineers in first-tier cities really earn 10-20K? Is 5-8K the ceiling in small and medium-sized cities?” The answer is harsh and realistic: Positions that only involve wiring and basic programming are disappearing; what companies are eager for … Read more
Invoking function blocks is akin to setting a one-button operation mode for various small appliances in a kitchen; just press a button, and it will automatically complete a series of actions. In the S7-1200, function blocks serve as “containers” for packaging reusable code, encapsulating commonly used control logic that can be called upon as needed, … Read more