Automation Open: the specified object can not be creatable

Question

Hi,
When i try interfacing TestStand with labView 7.1,the Acrivex Automation open  is throwing the error mentioned above.
The object its refering is "Sequence Context" of Test Stand.I could set other properties of TestStand from LabView 7.1 FDS,
only if  this object is created .Why is it do?.
jeyaseelan P
AutoTEC Systems Pvt Ltd,
Bangalore-46

Answer 1

Hi Jeyaseelan,
To load your steps limits from a LabVIEW VI, I would recommend taking the following steps:
1) Start from TestStand, and create a new "Action" step type named something like "Load Limits". Right click on the newly created step and select "Specify Module", then "Create VI".
2) Within your VI, load test limits from a file format of your choosing (ASCII should be the simplest). The Read From Spreadsheet File subVI should work great for this.
3) Next, you need to look up specific steps in your sequence and programatically change the limits. Right click on the Sequence Context input to your VI, and select Create >> Property >> Sequence. On the "Sequence" output of that property node, right click once again and select Create >> Method >> Get Step by Name. Enter the appropriate step name and group.
4)  Finally, right click on the "step" output of the previous invoke node, and select Create >> Method >> AsPropertyObject. Right click on the property object, and click Create >> Method >> SetValNumber. For the lookup string parameter, enter "limits.low" or "limits.high". The options should be set to 0, and the newvalue input should contain your limit value (obtained from text file).
After this, you can definitely customize the VI to meet your needs. For example, you could automatically go through every step in your sequence and detect which ones are numeric limit tests, then set the limits of those tests using data from a text file.
I hope this helps! Please let me know if you need any more information and I would be glad to assist you further. Have a great day!
Regards,
Casey Weltzin
Applications Engineer
National Instruments