Can a waveform graph's display parameters be changed in an exe from outside that exe?

Hi all,
I have a kind of strange Q to post here:
I've got a quite stable test execution system still based on LV 7.11. Amoung others it has a waveform graph that shows curves for different test measurements. All be done in the exe, mostly via Refnums of that graph and property nodes in subVIs that (re-)configure the graph to show the respective signals, descriptions, scales etc. Worked fine for many months, if not years.
This morning I got a call from production floor that they got strange displays. Turned out that some of the properties of that graph became misconfigured, Example: X-sxale is now at autoscaling and the x-scrollbar is invisible. So I got a black bar when displaying ~350 s of ECG data instead of ~5 s. This never happened before and happened similar on at least two (independent) machines. They only share a mySQL-database, some shared folders on the LAN to store results, a LAN-based printer and a common source for an ini-file for test configuration.
They also had problems printing the test reports this morning.
Is there any configuration outside of my exe (for LV runtime?) that could have coused this?
Greetings from Germany!
Uwe

Coq Rouge wrote:
Have the computers been updated with some new software? Like windows service packs, new virus scanner etc
Hi Uwe,
I have to side with Coq Rouge on this Q.
It is possible to "reach-out and touch" if VI server is enabled on those machines but the possibility of malcious code finding the invokations required to pull that off.... unless you have a competitor that has you in their gun sights .... are remote.
There have been a couple of posting here where people have noticed odd things happening with window focus etc. In my case it seems like Windows is clcikcing my mouse for me. I have only seen this on teh Windows XP machine that I allow to get updates.
I believe the system logs should record signs of updates etc. The machines affected should be chcked.
I admit the above is of little use, but maybe it can inspire you.
Trying to help,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

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Dear nebb,
first of all, graph is usually an offline plot of the acquired data but to use it as an online display u need to use build arrays in for/while loop which keeps on adding new points & plots in waveform graph.
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waveform_graph_without_for_loop.vi ‏17 KB

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Attachments:
WaveformGraph.PNG ‏46 KB

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multiplot graph.vi ‏19 KB

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The block diagram is in the first capture
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Attachments:
Capture.PNG ‏44 KB
Capture1.PNG ‏7 KB
Capture2.PNG ‏29 KB

Hi Wayland,
The reason the cursors are always apparent in the example VI for the Transition Measurement.vi, is because the signal being generated is always resetting. So, the signal resets to a 'new' signal for the cursors to go over and therefore always remain in the somewhat same location. The Waveform Graph is also configured in such a way that it will not move or continue to show new data coming in, the data cursors have moved onto. So in your case, you will want to right click the graph and make sure "Ignore Time Stamp" is not checked/selected. This will make it so the graph keeps up with your incoming data and the cursors. You can check this in the example file by removing the True Constant going to the waveform generator and changing the time stamp option previously mentioned.
In order to view the available cursors and their numbered position, you can right click on the Waveform Graph and select properties. In the properties window there is a Cursors tab, inside this tab at the top is a drop down menu that lists all of available cursors, indexed starting with 0 at the top.
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Thanks so far,
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multigraph.llb ‏136 KB

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Message Edited by GerdW on 05-14-2008 01:28 PM
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

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Hi Scott,
Thanks for your suggestions.
I actually prefer relative time, but other users wanted absolute time so that is why I put it in.
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In previous version of LabVIEW it vas possible to create reference to cursor panel (array) so it was possible to resize, change number of rows, in it. It will be useful for me to have reference to TreeControl contained in cursor legend. How to create this reference? The method described in the manual works for scale legend but not work for cursors panel.

Thank you JLS once again.
In my opinion the cursor palette at list should have the following functionality:
Automatic resizing of the panel while adding and removing cursors programmatically (like plot legend)
Positioning the panel programmatically (like plot legend)
Hiding any columns and rows. For example when I hide one of the cursors (let say the second one, not necessary the last one) also this one should disappear from cursors panel, removing cursor from cursor list might be inconvenient. If I have one cursor and not enough room to show cursor panel I can not hide the cursor name column that is unusable but occupies place on the panel
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Formatting data displayed
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Can a waveform graph's display parameters be changed in an exe from outside that exe?

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