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PLC controller

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PLC control system
PLC control systems, Programmable Logic Controller, programmable logic controller, a number-crunching operation electronic system, specially designed for applications in industrial environment. It uses a programmable memory for its internal storedprocedures, and perform logical operations, sequence control, timing, counting andarithmetic operations, such as user-oriented instruction, and through digital or analog inputs/outputs control of various types of machinery or production processes. Isthe core of industrial controls. PLC control system for remote monitoring.

Working principle
Scan technology
When the PLC controller running, their work tends to fall into three phases, namely input sampling, refresh user program execution and output stages. Completing the above three stages is called a scan cycle. Throughout the run, PLC controllers scan speed of the CPU needs to be repeated all three stages.
Areas of application
At present, the PLC controller both at home and abroad have been widely used in iron and steel, petroleum, chemical industry, electric power, building materials, machinery manufacturing, automobile, textile, transportation, environmental protection and cultural and entertainment industries,

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