Hi!
I have an MKS 946 Vacuum System Controller, and I have LABVIEW 20.0.0in my computer. I have connected the device via serial port, I have installed the NI-serial driver. Still I cannot find the instrument on NI-MAX. I have tried several methods that I found from this discussion group, still I am unable to find my instrument. Moreover, when I open NI-Troubleshooter, it says "hardware presence is not verified". Please help. 
