Limit Testing Issue

[GSO]

New user and am having an issue displaying upper and lower limits along with dynamic data from a daq.  I can somewhat do it on two different graphs with the attached VI but can't get it on one.  It looks like the time starts at the year 1903 in the limit graph and is current on the dynamic data graph.  Any help would be greatly appreciated.  thanks in advance.

[tbob]

Could it be that the chart starts at 1903 because X0 is set to 0?  You can combine the two signals into one chart by building an array of the two waveforms and feeding the array into the waveform chart.

[GSO]

Thanks for your reply.  I only want one chart with all the information on it.  According to limit test vi, I should be able to plot all the information on one chart.  How do I synchronize the limits with the dynamic data?

[tbob]

After looking at the Limit testing express vi, the signal in waveform is put into an array along with the upper and lower limits waveforms.  The output should contain 4 traces.  I can't run it because I don't have a DAQ hooked up.  Do you not see 4 traces on the waveform chart?  If you don't, wire waveform charts to both limit output waveforms and see if they show up there.

[GSO]

Bob;

That's the issue I'm experiecing is that I can't get all 4 plots to show up on the plot.  I really only want the limits along with the original waveform which  is the only reason I'm using the limit test vi.  Only the upper and lower limit show up.  I need the upper and lower limit along with the analog waveform. Is there another way to graph an upper and lower limit along with the dynamic data?  Thanks again.

[GSO]

BTT

[Dennis_Knutson]

Since you are using Dynamic Data, use the Express Mask & Limit Function. I think your basic problem is that you a taking a single point with thr DAQ Assistant.

[GSO]

Dennis:

Thanks for the reply.  I was in the process of trying this when your reply came through and it seemed to work after playing around with the scaling.  Thanks again. -- Kurt