visa resource name can't find

[jimlipu]

I'm running a example, visa resource name list couldn't find the port, only com port list, added USB cable (FTDI TTL-232R-3V3-WE) into visa, change visa class I/O session to USB raw, then can see it, but in configure serial port vi, I got this pic. Did I do something wrong or any suggestion? 

thank you

[Dennis_Knutson]

Do NOT change the I/O class to USB RAW if you want to use the device as an RS-232 port. If the device does not show up in MAX as an additional com port, first verify that you installed the correct driver that came with the device. Then, see if it appears as a com port in windows device manager. Post back If it shows up in device manager and in Hyperterminal as a com port but MAX still does not list it.

[jimlipu]

thanks for reply

At first, usb cable showed up as com port in windows device manager, but after install it to VISA, it shows up as a NI VISA usb device, not in com port list

[Dennis_Knutson]

What do you mean install it to VISA? There is nothing required to install it to VISA. You didn't happen to run the VISA Driver Wizard did you? If you did, that was a mistake. If you did, remove the files that you created and re-install the driver you geot with the device. You would only use the driver wizard if you did want to use USB RAW for some reason and not use it as an RS-232 device.

[jimlipu]

yes , I did run VISA drive development wizard

I will try what you said,

thank you for helping