PLC and frequency converter are the most commonly used devices in industrial control. They can be used alone or in close cooperation to achieve the purpose of automatic control. They are widely used. Today, let’s take a specific example: dual constant pressure towerless water supply system. This system is completed by the close cooperation of frequency converter and PLC, and is generally used in large projects.
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Recommended ReadingLatest update time:2024-11-16 12:49
PLC/DCS control system interference types and phenomena
Abstract: PLC/DCS control systems often encounter interference problems during actual operation, causing field instrument failures, abnormal analog display, and unstable data. Signal isolators can control external interference and have voltage and current limiting functions for lower-level equipment, thereby protect
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How to implement free port communication with Siemens S7-1200 compact PLC
Siemens S7-1200 compact PLC is widely used in the current market. Due to its high cost performance, it is often used as a controller for small automation control equipment, which also makes it often communicate with third-party devices (scanners, printers, etc.). Because there is no third-party device, here we take
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PLC Solutions for Industrial IoT Applications
Industrial Internet of Things (IIoT) applications promise to improve the efficiency of complex industrial systems. Since these IIoT applications are enabled by next-generation microcontroller-based programmable logic controllers (PLCs), developers are challenged to support the various industrial interfaces required
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How to add modules to Mitsubishi PLC programming software FX2N PLC
Mitsubishi Electric's FX2N series PLC is a small, high-performance programmable logic controller that is widely used in industrial automation. FX2N PLC supports a variety of expansion modules, including input/output modules, analog modules, special function modules, etc. This article will detail how to add modules t
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Detailed explanation of micro PLC based on AT89C51 single chip microcomputer
Programmable Controller PC (Programmable Controller), to distinguish it from Personal Computer PC (Personal Computer), can be referred to as PLC. It is based on mature and effective relay control concepts and design ideas, using advanced single-chip microcomputer technology to achieve real-time detection and control o
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Three basic process contents of PLC work
PLC adopts a cyclic scanning working mode. In PLC, user programs are stored in order. The CPU starts to execute the program from the first instruction until it encounters the end character and returns to the first instruction, and repeats this cycle over and over again. The scanning process of PLC is divided into se
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What is PLC? You will understand after reading this
What is PLC?
PLC (Programmable Logic Controller) is a new type of industrial control device based on microprocessors, integrating computer technology, automation technology and communication technology. It realizes networking communication, human-computer interaction, process control, logic programming and othe
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Configuration example of connecting a soft starter to a PLC via a ModbusRTU to Profinet gateway
In the sewage treatment system, the ModbusRTU to Profinet gateway can be used to connect the PLC and the inverter to achieve communication between the two. It effectively improves the work efficiency in the production process and provides more convenience and flexibility for the production process. This case is a co
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