Author Topic: basic trend chart not graphing  (Read 1806 times)

lwaldner

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basic trend chart not graphing
« on: May 21, 2016, 04:12:52 PM »
I am trying to get the basic trend chart to graph the temperature change on my solo temp controller...... I have it set up properly with the addresses needed and high and low is also set properly within temp range but the trend chart doesn't graph anything at all....even if I download the advanced hmi/solo project and run it nothing is graphed..everything else works but the graph

Archie

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Re: basic trend chart not graphing
« Reply #1 on: May 21, 2016, 04:14:58 PM »
Check the YMinimum and YMaximum properties to make sure your expected value is within those limits. Also if the range is too wide, the line could be at the extreme bottom and not be visible.

lwaldner

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Re: basic trend chart not graphing
« Reply #2 on: May 21, 2016, 04:22:15 PM »
my range normally is 60-220

starting temp is 70 so it should show up.

Archie

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Re: basic trend chart not graphing
« Reply #3 on: May 21, 2016, 04:23:12 PM »
Add a BasicLabel to show the same address to make sure it is not scaled to something like x10

lwaldner

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Re: basic trend chart not graphing
« Reply #4 on: May 21, 2016, 04:33:57 PM »
ok that's the problem... its showing 777 which is 77.7.......anyway to add a decimal to the trend chart?

Archie

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Re: basic trend chart not graphing
« Reply #5 on: May 21, 2016, 04:45:48 PM »
The BasicTrendChart does not support scaling. Right off I do not remember if ChartBySampling has the scale factor implemented or not. I will have to test that out later.