Plc modules development course

In the late 1970s, the programmable controller into the practical stage of development, the introduction of computer technology has been fully programmable plc programmable intelligent controller controller, its function occurred leap. Higher operation speed, ultra-small size, more reliable industrial anti-jamming design, analog operation, PID function and high cost laid it in modern industry. The early 1980s, the programmable controller in the advanced industrial countries has been widely used. Features programmable controller is a large-scale plc analog input output io module development of this period, high-speed, high-performance, product serialization. Another feature of this stage is the national production of programmable controllers increasing world production rising. This marks the programmable controller has entered a mature stage.