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Hi all,

 

I have a project with an analog input which connected to a level transmitter. If I directly show the input on the screen, it can change 2-3 times in a second as it is not very stable. So I tried to solve it with sampling with a timer.

 

Timer runs as soon as PLC starts to run. When timer reaches to its "set time", it copies the data on the analog input to a bit and reset itself. On the screen I see the "bit" value. The problem is after some amount of time, lets say 3-4 days, it stops to copying the value and display shows the same value even if the level reaches to full.

 

What do you think? What am I doing wrong?

 

 

Thanks in advance.

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