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Author Topic: voltage for o2 only reading 0 or 1  (Read 1020 times)
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mccullochs
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« on: November 18, 2011, 02:10:19 pm »

I have had ScanXL Pro for years but recently moved computers and lost all my configurations.  For some reason I can only get the graphs to read oxygen sensors as 1v or 0v for the text when before it would read like .46v .91v .14v  The graph is fine with display but the text won't show me the real time o2 value.  Thank you.
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Weston@PPE
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« Reply #1 on: November 18, 2011, 02:17:14 pm »

You need to set the format string to %0.f, instead of %0.0f. That would leave all of the precision points on the end.
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mccullochs
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« Reply #2 on: November 18, 2011, 02:43:34 pm »

I tried it with no luck.  is there some place I can go to find all the standard setup information for the graphs?  On the o2 the grid on the side is 0 0 1 1 1 on the 5 vertical ticks.  This is killing me.  Thank you.
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Weston@PPE
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« Reply #3 on: November 18, 2011, 02:57:17 pm »

If you right-click on the graph, and go to Graph Settings you can change this. In Graph Settings, go to the Text Areas tab, and select Y-Axis Tick Labels for PID# (# being the PID you are having issues with. Change the Format String to %.2f. This leaves exactly 2 points of precision. Try that and see if it works any better.
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mccullochs
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« Reply #4 on: November 18, 2011, 03:28:11 pm »

Hi Weston,
I guess I didn't say it right.  The graph is fine displaying nice movement but the problem is the realtime display foir o2 voltage.  It displays either 0 volts or 1 volt.  I can watch the graph but I like to look at the individual numbers that make up the graph.  at .14 volts it displays 0 volts but graphs the correct .14 volts etc.  Thank you.
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Weston@PPE
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« Reply #5 on: November 18, 2011, 03:33:13 pm »

Same thing applies, just scroll down to Value PID#, instead of Y-Axis Labels for PID#. Here's a screenshot example using a default graph with no PIDs assigned.

Notice that the value of the red color PID changed from 0 to 0.00, I believe this is what you're trying to achieve. If you set it to %.2f, instead of %0.2f, it should leave the trailing zeros off (so it would be 0.1, instead of 0.10).
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mccullochs
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« Reply #6 on: November 18, 2011, 03:53:06 pm »

again, the mysteries of life are resolved.  That fixed it and now I understand it.  Thank you and have a great weekend.  I will decide over the weekend on bluetooth or wifi and place my order.  Regards, Rick
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