Basic Trend Chart Sampling time

[Mvlawn]

Is there a way to adjust the sampling rate and display time on the Basic trend chart? It appears to display about 5 minutes worth of data, sampling every couple seconds. I would like to sample every 5 minutes and display 24 hours of data.

[Archie]

The PollRateOverride of the driver sets the sample rate. If you want a different rate than everything else, add another driver instance and set the ComComponent property of the chart to point to the other driver. The PollRateOverride is in ms, so for 5 minutes you would have to set it to 3000000

[Mvlawn]

Thanks Archie!!! Being as I want to capture 24 hours of data once every 5 minutes I assume i would set the max points for 288 in the trend properties. Is that correct?

[Archie]

Yes, that is correct.

There is another possible option that may be better. Can you store the 288 points in your PLC/device in an array or consecutive addresses? If so, you can use the ChartByArray.