- 型号:330180-91-05
- 数量:3
- 制造商: 厦门兴锐达自动化设备有限公司
- 有效期:2019/10/10 0:00:00
BENTLY NEVADA 330180-91-05
BENTLY NEVADA 330180-91-05
BENTLY NEVADA 330180-91-05
可编程操控器,英文称ProgrammableLogicController,简称PLC。PLC是根据电子计算机,且适用于工业现场作业的电操控器。它源于继电操控设备,但它不像继电设备那样,通过电路的物理进程结束操控,而主要靠作业存储于PLC内存中的程序,进行入出信息变换结束操控。
PLC根据电子计算机,但并不等同于一般计算机。广泛计算机进行入出信息变换,多只考虑信息自身,信息的入出,只需人机界面好就可以了。而PLC则还要考虑信息入出的牢靠性、实时性,以及信息的运用等问题。特别要考虑怎样适应于工业环境,如便于装置,抗干扰等问题。
1.1结束操控要害
输入输出信息变换、牢靠物理结束,可以说是PLC结束操控的两个底子要害。
输入输出信息变换靠作业存储于PLC内存中的程序结束。PLC程序既有生产厂家的体系程序(不可更改),又有用户自行开发的运用(用户)程序。体系程序供给作业途径,一起,还为PLC程序牢靠作业及信号与信息变换进行必要的公共处理。用户程序由用户按操控要求规划。什么样的操控要求,就应有什么样的用户程序。
牢靠物理结束主要靠输人(INPUT)及输出(OUTPUT)电路。PLC的I/O电路,都是专门规划的。输入电路要对输入信号进行滤波,以去掉高频干扰。并且与内部计算机电路在电上是阻隔的,靠光耦元件树立联络。输出电路表里也是电阻隔的,靠光耦元件或输出继电器树立联络。输出电路还要进行功率放大,以足以带动一般的工业操控元器件,如电磁阀、接触器等等。
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- 传真:0592-5361191
- email:LJY_05228@163.com
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