Dear sir,

I have the same problem. I want to read value from sensor at different time. To this end, I have written a short programme to divide into many frame, each frame I save the data to Data Block. But at the final step when I want to get the average value. The saved values have changed along with period of time. 

How can I save value with is not depend on time? Can anyone deal with the problem same as me? 

Please help me!

Thanks

Best regards

Ted.

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Split from how can I store data from various sensors in PLC memory to display graphics for various periods of time.

I don't really get your question.

You want to save some values of a sensor, randomly in the time ?