Characteristic of PLC process designing applies

Dispatch of net of machine tool of Chinese numerical control: The applied face of PLC process designing wide, function is powerful, use convenient, had made one of main device of contemporary industry automation, all fields that produce in industry got extensive use, in other sphere (for example civil with domestic automation) application also got rapid development. International Electrotechnical Committee (IEC) is in the PLC draft standard 1985 in the 3rd draft, made following definitions to PLC: "It is the electric subsystem that operation of a kind of number operates, design to application falls in industrial environment only. It is used but the memory of program, use in-house memory to implement the directive of the operation such as logistic operation, sequence control, time, computation and arithmetic manipulation, pass the input of digital type, imitate type and output, control the machinery of all sorts of types or manufacturing process. But program controller reachs his to concern equipment, should press make industry controls a system to form a whole easily, easily the principle of its function devises extension. " can see from afore-mentioned definitions, PLC is a kind of industry that will change control function with the program controls the computer, besides can fulfil various control functions, still have the function with net of couplet of other computer communication. The promotion application of PLC process designing got swift and violent development in our country, it already in the electric control equipment that abundantly uses in all sorts of mechanical equipment and manufacturing process, all trades and professions also emerges the achievement that revealed large quantities of application PLC to transform equipment. Understand the working principle of PLC, have the design, capacity that debug and maintains PLC to control a system, had become modern industry to learn unripe main demand to electric technology personnel and engineering course. CNC Milling