1784-PCIC

1784-PCIC

1784-PCIC

3、存储器
PLC存储器是保存程序和数据的地方，分内制式和外插式两种，存储器容量在512~128M字节之间，一定要根据实际情况选取足够大的存储器，并且要求有一部分空余作为缓存。
PLC存储器按照类型可分随机存储器（RAM）、只读存储器（ROM）、可擦除只读存储器（EPROM）等。RAM可以任意读写，在掉电后程序只能保持一段时间，最适合于在自控系统调试时使用。ROM只能读不能写，程序是由厂家或开发商事先固化的，不能更改，即使失电也不丢失。EPROM与ROM只是EPROM通过特殊的方式（如紫外线）可以擦除再写，适合于应用在长时间工作而改动不大的系统中。

4、易于更改
PLC较继电器控制的另一个优势在于它可以根据实际需要任意更改控制结构（或控制过程），这就要求更改程序方便快捷。

现货，现货，降降降，火火火，火火火……

现货，现货，降降降，火火火，火火火……

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◆ 企业名称：厦门泰尼电气有限公司

◆ 联系人： 小廖（女士）

◆ 电话：0592-6539066
   
◆ 手机：18965113601 

◆ 传真：0592-6890859

◆ QQ:1490371370

诚信经营，质量为首，服务至上，厦门泰尼小廖竭诚为您服务！！！

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