Labview calls CVI dll

[Fengfeng]

I got a problem for calling a CVI dll from Labview, anybody can help me out.

I implemented a CVI function to open a COM port and write a string to the poer, like:

OpenComConfig (1, "COM1", 9600, 0, 8, 1, 2048, 2048) ;

ComWrt (1, "This is a test string", 21);

then I can the function from labview, the function OpenComConfig alwany return -7 to tell me

"Cannot open port". If I run the function in Labwindow eveything is fine.

Fengfeng

[Ankita]

Hi,

Please make sure that you did not do any mistakes when creating the CVI DLL. This KB describes how to create a CVI dll.

Regards,

Ankita