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hirzel
4 Posts |
 Posted - 08 Mar 2006 : 11:11:19
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I'm attempting to set up a temperatur control using your PID.
My question regards the "PIDCalc" method.
Do I need to use this method to get the PIDoutput or does the PID automatically cycle and compute a new PID output.
EXAMPLE:
Private Sub PID_OnInternalTimer()
PID.PIDInputValue = MyTemperature
PID.SDataSimulationMode = False
PID.PIDSetpoint = My_Setpoint
PID.PIDPropGain = My_PGain
PID.PIDIntegralGain = My_IGain
PID.PIDDerivGain = My_DGain
PID.PIDSamplePeriod = 0.017 ' time is in minutes
My_Valve_Position = MediaPID.CalcPID(MyTemperature)
End Sub
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quinncurtis
1164 Posts |
Posted - 08 Mar 2006 : 13:09:09
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Please specify the full name of the product you are asking about. This look like something from the Real-Time Graphics ActiveX Controls (WIN-AXC-200), not the Real-Time Graphics tools for Windows (WIN-BMC-200). If so, you are posting in the wrong forum.
Do you have a commercial version of that product ?
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hirzel
4 Posts |
Posted - 08 Mar 2006 : 13:34:10
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WOOPS, Sorry about that, It is WIN-AXC-200.
This is the DEMO version, I have two requirements that your product may fill the need, the PID and the Charting. I like what I see so far, but am trying to get a better understanding on how the PID interacts with my software before I commit to purchase.
The PID seems to work with the sub routine I included, but I'm not sure if this is the appropriate way to use the activex.
Thanks
John
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quinncurtis
1164 Posts |
Posted - 08 Mar 2006 : 13:43:04
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The demo that you can download from our web site is not a trial version (we only offer trial versions of our .Net products) of the software, and we don't provide any technical support on it, either directly or through these forums.
With respect to your original question: It is up to you to call the PIDCalc method with the proper interval, using a timer or some other event. You must call the PIDCalc method with the same interval that you specified as the PIDSamplePeriod property of the control. |
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hirzel
4 Posts |
Posted - 08 Mar 2006 : 14:29:39
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Thanks, it looks like this will do the trick.
However, I'm a bit confused about your first statement regarding demo and product support?
I assumed that the demo is fully functional (It seems to be in the test software I've run), but I don't understand what you meant about "not a trial version"
Also, I'm confused about the statements "we don't provide any technical support on it, either directly or through these forums".
Is this in reference to the Demo or the actual product, or both??
I would be concerned about purchasing a product that the vendor indicates they will not support!
Thanks
JOhn
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quinncurtis
1164 Posts |
Posted - 08 Mar 2006 : 14:49:12
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The ActiveX demo download is a demo, not trial software. It was originally designed so that programmers could load our serialization files and see few some examples of scrolling graphs, bars and meters. That is what is described in the README file of the install directory. We never meant for anyone to try and program it, which is why the ActiveX controls themselves are NOT fully functional, and it does not include example program. We do not provide any technical support for anyone trying to program the demo controls.
We do provide technical support for the commercial WIN-AXC-200 product, in our ActiveX forum.
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hirzel
4 Posts |
Posted - 08 Mar 2006 : 15:38:32
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OK, Good deal. I'm still messing with the chart, but so far so good.
Thanks
john |
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Basic PID Operation
