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PLC简称为可编程控制器PLC programmable controller for short
PLC开始应用于工业控制是在20世纪60年代PLC began to application in industrial control is in the 1960s
PLC的特点有PLC characteristic
编程简单，可以现场修改程序，易于掌握Simple programming and can spot modify the program and easy to catch
维护方便Maintenance convenient
可靠性高，抗干扰性强High reliability and anti-interference is strong
体积小，重量轻，功耗低Small volume, light weight, low power consumption
功能强，通用性好Strong function, excellent versatility
PLC可以分为以下几类PLC can be claified into the following categories
整体式PLC和模块式PLCIntegral PLC and module type PLC
PLC的作用PLC role
用于开关逻辑控制，定时、计数控制Switching logic control, timing, counting control
用于闭环过程控制，数据处理，数字控制Used in closed loop of proce control, data proceing, digital control
随着应用领域的日益扩大，PLC技术及其产品仍在继续扩展As the fields of application, PLC technology and its growing product still continues to expand
其机构不断改进，功能日益增强，其性价比越来越高Its institutions continue to improve, the function, the ratio of growing increasingly high
PLC的组成PLC composition
中央处理单元The central proceing unit 存储器memory
输入、输出单元Input and output unit 单元电源Unit power
PLC programmable controller for short, Began to application in industrial control is in the 1960s.The characteristic of PLC, Simple programming and can spot modify the program and easy to catch, maintenance convenient.High reliability and anti-interference is strong.Small volume, light weight, low power consumption.PLC can be claified into the following categories.PLCIntegral PLC and module type PLC.PLC role, Switching logic control, timing, counting control.Used in closed loop of proce control, data proceing, digital control.As the fields of application, PLC technology and its growing product still continues to expand.Its institutions continue to improve, the function, the ratio of growing increasingly high.PLC composition, the central proceing unit, memory,input and output unit, unit power.
