Programmable controller is a digital
operation of the electronic system, designed for use in industrial environments
and design. It uses programmable memory for storing commands such as logical
operations, sequential control, timing, counting, and arithmetic operations in
its internal control and controlling various types of machinery or production
via digital analog input and output process. Programmable controllers and their
associated equipment should be designed in a manner that is easy to integrate
with an industrial control system as a whole and easy to expand.
Features of PLC:
1.High reliability, strong anti-interference
ability
2.Programming is simple and easy to use
3.Design, easy installation, less maintenance
work
4.Functional, versatile, and can achieve
three integrated power
5.PLC combines electronic control (logic
control), electrical instrument (process control) and electric junction (motion
control).
6.Small size, low energy consumption
7.High cost performance
PLC plays an important role in industrial
automation. It has been widely used in machinery, metallurgy, petroleum,
chemical industry, light industry, textile, electric power, electronics, food
and transportation industry at home and abroad. Experience has shown that more
than 80% of industrial control can be done using PLC.