I remember now, the other thread about the manual.

So now is MODBUS connected? Bahh, then thats the problem, combine shady BOB and connect it using Modbus and chinglish software and manual and....

For me is a no brainer. DDCSV1 controller for 150 euro, no Mach# or 4 PCs etc., connect to VFD , via analogue voltage control and voilaaaa.