I am trying to control a UV lamp using LabVIEW via rs232 DB9 cable.
It's working very well with the PC which is having DB9 port. The PC which I supposed to configure with the lamp doesn't have DB9 port. So, I tried using CH340 USB RS232 connector, the drivers were perfectly installed and it was detected as COM port in device manager.
The same LabVIEW VI is not working in this configuration. It is throwing some read error. Do I need to change any VISA settings for USB port ?