Description
PCD232A101 3BHE022293R0101 Digital Computing Electronic Systems
PCD232A101 3BHE022293R0101 sequential action in accordance with the logical conditions, and in accordance with the logical relationship between the control of interlocking protective actions, and a large number of discrete quantities of data acquisition. Traditionally, these functions are realized through pneumatic or electrical control systems. 1968 GM (General Motors) proposed to replace the requirements of the successor to the electrical control device, the next year, the United States digital company developed a control device based on integrated circuits and electronics, the first time the use of programmed means of application to the electrical control, which is the first generation of programmable controllers, said the Programmable Controller (PC).
There are many definitions of PCD232A101 3BHE022293R0101. The International Electrotechnical Commission (IEC) definition of PLC is: a programmable controller is a digital algorithmic operation of electronic systems, designed for application in industrial environments. It uses a programmable memory for storing instructions within it to perform operations such as logic operations, sequence control, timing, counting, and arithmetic operations, and to control various types of machinery or production processes through digital and analog inputs and outputs. Programmable controllers and their related equipment, should be easy to form a whole with the industrial control system, easy to expand its functionality of the principle of design.