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变量(PLC寄存器)变化如何产生事件触发

我将PLC的寄存器作为变量处理,对于变量值改变,labview中好像没有相应的事件生成,我在事件结构帮助中注意到可以使用值(信号)属性生成事件触发,但是我发现只要是执行了属性读取不管值有没有改变,事件一定触发,底下有一个试验程序感觉相当困惑。不知有没有解决方法,谢谢!!

 

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Sub: Variable (PLC registers) change how the event-triggered

 

 


Post: I will deal with PLC's registers as a variable for the variable value changes, labview it seems there is no corresponding event in the generation, I took note of in the event structure can be used to help value (signal) properties generate event-triggered, but I found that as long as the implementation of the property read regardless of the value has not changed, the event will trigger, there is a pilot program under the feeling quite confused. I wonder if there is not a solution, thank you! !


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