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S71500做主站，S71200做从站 | 找知识-找PLC
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  1. 找知识-找PLC首页
  2. 自动化系统
  3. SIMATIC S7-1500

S71500做主站，S71200做从站

• SIMATIC S7-1500

S71500做主站，在集中控制台，而S71200做从站，在就地控制变频器；
那么在集中控制台给S71500输入4-20mA的电流信号，能实现在就地S71200输出4-20mA的电流信号去控制变频器吗？

最佳答案

能倒是能，但就是不算好。
前面都没问题，但1200为啥子要用4-20mA去控制变频器呢？1200除了以太网接口，还内置了一个485口呢，用这个控制变频器不是更好？西门子不是支持USS（西门子所有传动产品）就是支持MODBUS-RTU（绝大多数变频器，也包括部分西门子变频器），而1200应该两种通讯协议都支持的吧。

提问者对于答案的评价：
谢谢，我先试一试。

原创文章，作者：more0621，如若转载，请注明出处：https://www.zhaoplc.com/plc125710.html

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