Changing time to the number of cycle

Dear Friends,
I will appreciate if anyone helps me.
I am trying to convert time to no. of cycle in my program. Actually I am reading temperature from externel device. I put my program in a loop and I can see temperature chart which varies with time. how can I get a out put of time from wavechart output and calculate it to no. of cycle?
I know the frequency of my external device which sends temperature to labview.
Regards,
Mehdi
Attachments:
Panel.JPG ‏178 KB
front panel.JPG ‏193 KB

In general, if you know the time the first sample was taken and the time between samples, a little simple math will tell you the time each sample was taken:
time_for_sample_n = start_time + (time_between_samples * n)
Given this, you can easily calculate an array of times for each sample, that you can then use for the x-axis of a graph.
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Attachments:
TEST RIG 11 10-28-13.vi ‏298 KB

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cycle_count.jpg ‏8 KB

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Changing time to the number of cycle

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