You were correct about using the modules will not create seperate instances of the dll. I was able to successfully use the driver dll to access the device and to access the dll's global variable to determine if errors occurred.

Thanks for the information and help. I really appreciate it.

In reply to Re^4: How to use Win32::API to access variable in DLL file? by dasgar
in thread How to use Win32::API to access variable in DLL file? by dasgar

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