I want the current time (the system time) on my graph(x axis). I want the system time to be synchronized with the readings. And I dont want all samples. Actually I will be adding a log loop later, which logs data every second. That's why I take average and get a single value every second. If I use waveforms, I will not be able to get the average.
Don't you think you can try on your own before crying for help?
This vi too is not as what I wanted.
You should always state in clear and full description, what your goal is. When it's not what you wanted you can adapt it as you like…
I can display current (system) time nicely on a chart - when using waveforms as suggested before:
(I replaced your DAQmx stuff to create a working example VI…)