1756-DHRIO~！~1756-DHRIO
1756-DHRIO~！~1756-DHRIO
1．S7-200系列PLC的特点：
是SIEMENS公司推出的一种小型PLC
（1）它结构紧凑
（2）扩展性良好
（3）指令功能强大
（4）价格低廉
成为当代各种小型控制工程的理想控制器。
销售负责人：张亮（工程师） 专线：0592-6809819
24小时移动专线：18030028083 QQ：2314094943 【传真：0592-6890859】
2．S7-200PLC的产品：
（1）集成一定数字I/O点的CPU：CPU221、CPU 222、CPU 224、CPU 226、CPU 226XM
（2）扩展模块：主要有
数字量扩展模块：EM221、EM222、EM223
模拟量扩展模块：EM231、EM 232、EM 235
通讯模块：EM277、EM241等
其它模块：特殊功能模块
可以十分方便地组成不同规模的控制器。其控制规模可以从几点到几百点。S7-200PLC可以方便地组成PLC-PLC网络和微机-PLC网络，从而完成规模更大的工程。
3．S7-200的编程软件：STEP7-Micro/WIN32。该编程软件可以方便地在Windows环境下对PLC编程、调试、监控。使得PLC的编程更加方便、快捷。可以说，S7-200可以完美地满足各种小规模控制系统的要求。
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