I have the same USB connection that you have Michel Pet as well as the same USB connection that Matty Zee referenced (I bought them both.) I cannot get this to work. Do you have RS+ to A and RS- to B or do you have it hooked up the other way? What are the settings on your VFD? Is there something that I need to change with you com port settings with Device manager? I cannot get numbers besides 99 in PD001 and PD002. I have tried to start and stop my spindle, I hear a click but nothing turns on. If I have RS+ to B and RS- to A I don't get an e-stop, but if I have RS+ to A and RS- to B I do.
I asked Matty Zee which pins he had his set up with and he told me that he has RS- going to pin 1 on the DB9 connector and RS+ going to pin 2. This seems odd to me because receive and transmit are pin 2 and 3 respectively, at least in the pinout I'm reading. I tried RS+ to pin 1 and RS- to pin 2 and I still get nothing and vice versa, also tried to pins 2 and 3 etc. If anyone can help me out I would really appreciate it. Thanks,