SDCS-PIN-41A

SDCS-PIN-41A
施耐德140NOE77101
施耐德140NOE77101
施耐德140NOE77101


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可以*PLC对程序执行有限次数扫描（从1次扫描到65,535次扫描），通过*PLC运行的扫描次数，可以监控程序过程变量的改变。**次扫描时，SM0.1数值为1。
1. 执行单次扫描
“单次扫描”使PLC从STOP转变成RUN，执行单次扫描，然后再转回STOP，因此与**次相关的状态信息不会消失。操作步骤如下：
（1）PLC必须位于STOP（停止）模式。如果不在STOP（停止）模式，将PLC转换成停止模式。
（2）用菜单“调试”→ “**扫描”。

图1  “执行扫描”对话框
2. 执行多次扫描
步骤如下：
（1）PLC须位于STOP（停止）模式。如果在STOP（停止）模式，将PLC转换成停止模式。
（2）用菜单“调试” →“ 多次扫描” →出现“执行扫描”对话框。如图3-23所示。
（3）输入所需的扫描次数数值，单击“确定”。
 
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