ETS Wierenga

Hi Everyone, I bought the SM35-j-r20 for a new project. I have experience with the unistream models. With that, it was easy to connect via ethernet or USB. But with the Samba (visilogic) I have problems to connect with the plc. I get an communication drive error (206). I use a glodX GXMU-1200 USB to serial converter, with Prolific driver (I've tried different versions) . My baudrate is set to 57600. My OS is Win 11. I hope you can help me. Thank you in advance. Francis