编程器作用是将用户编写的程序下载至PLC的用户程序存储器，并利用编程器检查、修改和调试用户程序,监视用户
程序的执行过程，显示PLC状态、内部器件及系统的参数等。
编程器有简易编程器和图形编程器两种。简易编程器体积小，携带方便，但只能用语句形式进行联机编程，适合小型
PLC的编程及现场调试。图形编程器既可用语句形式编程，又可用梯形图编程，同时还能进行脱机编程。
目前PLC制造厂家大都开发了计算机辅助PLC编程支持软件，当个人计算机安装了PLC编程支持软件后，可用作图形
编程器，进行用户程序的编辑、修改，并通过个人计算机和PLC之间的通信接口实现用户程序的双向传送、监控PLC
运行状态等。
5.电源
PLC的电源将外部供给的交流电转换成供CPU、存储器等所需的直流电，是整个PLC的能源供给中心。PLC大都采用
高质量的工作稳定性好、抗干扰能力强的开关稳压电源，许多PLC电源还可向外部提供直流24V稳压电源，盱向输
入接口_上的接入电气元件供电,从而简化外围配置。
4. Sex quotient
The function of the programmer is to download the program written by the user to the user program memory of PLC, and use the programmer to check, modify and debug the user program and monitor the user
The execution process of the program, displaying PLC status, internal devices and system parameters, etc.
There are two kinds of programmers: simple programmer and graphic programmer. The simple programmer is small in size and easy to carry, but it can only be programmed online in the form of sentences, which is suitable for small
PLC programming and field debugging. The graphic programmer can be programmed in both sentence form and ladder diagram, and it can also be programmed offline.
At present, most PLC manufacturers have developed computer-aided PLC programming support software, which can be used as graphics when personal computers are installed with PLC programming support software
The programmer can edit and modify the user program, and realize the two-way transmission of the user program and the monitoring of PLC through the communication interface between personal computer and PLC
Operation status, etc.
5. Power supply
The power supply of PLC converts the external AC power supply into DC power for CPU, memory, etc., which is the energy supply center of the whole PLC. PLC is mostly used
High quality switching regulated power supply with good working stability and strong anti-interference ability. Many PLC power supplies can also provide DC 24V regulated power supply to the outside, Xuxiang transmission
Incoming interface_ The connected electrical components on the power supply, thereby simplifying the peripheral configuration.
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