prolific usb to serial comm port driver error

The drivers that my computer uses by default are, but when using those my computer doesn't recognize the device. I didn't know that! Definitely very helpful to know when doing RS232 communication. I've found a few forums that say it is likely just an error in the termination character, but I don't see anywhere to change the termination for the information on serial to USB convertion. If I open up the Initialize Sub-VI and run that, I get a different error: '-1073807339: Timeout' as the Error Sub-Sub-VI tries to run. The error is '-1073807346: Invalid VISA session' I attached a new image of my code while the F-Gen is attached as well as the showing the error I get. Ignore the error code in the image, I did not have the function generator attached when I ran it.ĭoes anyone have any thoughts on what could be going wrong? Or could someone send me a link to the serial cable I should be using (I need it to be female DB-9 to restarted my computer and got a different error. vi I am using as well as an image of the. The only thing I have not tried is a new serial cable, but I'm not sure exactly which one I need so I have put off buying a new one. I have been through quite a few support forums and tried many different solutions, but none have worked. The resource is valid, but VISA cannot currently access it.' I have checked the Parity, Baud Rate, and Data Bits to make sure they all match and they do, however, every time I run the program I continuously get error -1073807253 when trying to initialize the VISA connection between the PC and function generator. Since I know the function generator drivers work, I have been doing my RS232 testing with the function generator. I would just work with GPIB control, but the MKS 647B does not have a GPIB port so I have to use RS232 communication. Using the example provided with the driver for the function generator, I have remote control working via GPIB, but I cannot get RS232 control to work. Tools>Instrumentation>Find Instrument Drivers. I have installed NI-VISA (for RS232 control) and NI-488.2 (for GPIB control). I am trying to remote control the MKS 647B Mass Flow Controller and Aglient 33120A Function Generator for my college capstone project.

Prolific usb to serial comm port driver error