Using IMAQ Image controls in LabVIEW steps

[Vladimir Drzik]

Hi guys So far, I was using TestStand 4.0 together with LabVIEW 8.5 and Vision Development Module 8.5 with no problems. Recently, I've updated to LV 8.6 and VDM 8.6. I've started to experience weird problems when using LabVIEW steps with inputs/outputs containing IMAQ Image controls. When I try to click on such a step in seq editor, or try to insert a new step into the sequence, the step initialization takes a very long time (tens of seconds) or freezes completely. I've also tried to upgrade TS to version 4.1, but no difference. Also, my colleague experiences very similar symptoms on the same software setup. The only difference is that on his machine, it takes only a few seconds when you click on the vision step. However, the steps not containing an IMAQ Image control behave normally, i.e. you can't experience any "initialization time" when clicking on them in the sequence.To illustrate, I'm attaching a simple VI containing nothing more that a single IMAQ Image control. If you don't link it to the connector pane, the VI works fine when inserted as a TS step. If the IMAQ Image control is linked to the connector pane, TS freezes when inserting such a step.Vladimir


ft5.vi:
http://forums.ni.com/attachments/ni/330/20842/1/ft5.vi

[Chris_G.]

Hello Vladimir,  Thank you for posting on the NI Discussion Forums. This was reported to R&D (#123249) for further investigation. The only workaround I can offer for now is to work with the VIs from version 8.5 of LabVIEW if they have vision controls linked to the connector pane. Thanks for the feedback!