IC693PCM311

IC693PCM311 PLC除具有中档PLC的功能外，还增加了带符号算术运算、矩阵运算、位逻辑运算、平方根运算及其他特殊功能函数的运算、制表及表格传送功能等。PLC具有更强的通信联网功能，可用于大规模过程控制或构成分布式网络控制系统，进而实现工厂自动化。

3.按I/O点数分类

根据PLC的I/O点数多少，可将PLC分为小型、中型和大型三类。

（1）小型PLC

小型PLC的I/O点数小于256，具有单CPU及8位或16位处理器，用户存储器容量为4KB以下。例如：三菱FX0S系列。

（2）中型PLC

中型PLC的I/O点数在256～2048，具有双CPU，用户存储器容量为2～8KB。

IC693PCM311大型PLC

大型PLC的I/O点数大于2048，具有多CPU及16位或32位处理器，用户存储器容量为8～16KB。

上，PLC产品可按地域分成三大流派，一个流派是美国产品，一个流派是欧洲产品，一个流派是日本产品。美国和欧洲的PLC技术是在相互隔离情况下独立研究开发的，因此美国和欧洲的PLC产品有明显的差异性。而日本的PLC技术是由美国引进的，对美国的PLC产品有的继承性，但日本的主推产品定位在小型PLC上。美国和欧洲以大中型PLC而闻名，而日本则以小型PLC著称。

IC693PCM311  

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