Opening COM port with DLL

[GeorgeWGFL]

I'm trying to open a com port by calling a function in a DLL for a Davis Vantage Pro 2 Weather station with no success. I'm pretty familiar with LabVIEW but not so with DLL's. I've attached the VI, DLL and documentation. Any help would be greatly appreciated.

[Eric_R]

Hi George

I looked at your LabVIEW VI and everything seems to be in order. You may want to look into the DLLs further, there may be an initialize DLL before running the com port open. You can find an example of a DLL made and deployed here, this might help in providing an example. Let me know if this helps, you may also want to contact the distributer of the DLL for the order of operations regarding it.