230问答网 > 西门子PLC程序中SM继电器起什么作用

西门子PLC程序中SM继电器起什么作用

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2025-04-08 05:33:54
推荐回答（1个）
回答1：

《S7-200可编程控制器系统手册》里面附录D 特殊存储器（SM）标志位

该文的下载地址
http://www2.ad.siemens.com.cn/download/Upload/AS/manual/1109582[1].pdf

希望对你有所帮助。

另外，PLC不一样，其含义可能不一样，使用特殊存储器之前，请参见其对应的系统手册。

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