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PLC application characteristics
1. High reliability and strong anti-interference ability
High reliability is a key feature of electrical control equipment. PLC adopts modern large-scale integrated circuit technology and is manufactured by strict production process. The internal circuit adopts advanced anti-interference technology and has high reliability. The use of PLC to form a control system, compared with the same size of the relay contactor system, electrical wiring and switch contacts have been reduced to hundreds or even thousands of, the fault is greatly reduced. In addition, the PLC has a hardware fault self-detection function that can issue an alarm message in time when a fault occurs. In the application software, the application can also be programmed into the fault self-diagnosis program of the peripheral device, so that the circuit and the device other than the PLC in the system also obtain the fault self-diagnosis protection. In this way, the entire system will be extremely reliable.
2. Complete set, perfect function and strong applicability
Since the development of PLC to date, serialized products of various scales have been formed, which can be used in industrial control occasions of various scales. In addition to the logic processing functions, PLCs have perfect data computing capabilities and can be used in various digital control fields. A large variety of functional units have emerged, allowing PLCs to penetrate into various industrial controls such as position control, temperature control, and CNC. Coupled with the enhancement of PLC communication capabilities and the development of human-machine interface technology, it is very easy to use PLC to form various control systems.
3. Easy to learn and use, popular with engineering and technical personnel
PLC is an industrial control equipment for industrial and mining enterprises. Its interface is easy and the programming language is easy for engineers to accept. The graphical symbols of the ladder language are quite similar to the expressions and relay circuit diagrams. It opens the door for industrial control who are not familiar with electronic circuits, who do not understand computer principles and assembly language.
4. System design, small workload, easy maintenance, easy to transform
PLC replaces the wiring logic with storage logic, which greatly reduces the wiring outside the control device, shortens the design and construction cycle of the control system, and makes the daily maintenance easier. More importantly, the same device changes after changing the program. The production process is possible. This is especially suitable for production occasions of many varieties and small batches.
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