UCCNC to AVF 5100 via Modbusez, problems communicating

Hi

I'm having having troubles configuring my new VFD.
It's a chinese VFD (Avf 5100) controlling my chinese spindle (2,2kw, watercooled, 400Hz, 24 000rpm). I'm using as stated in the title, UCCNC as control software.

I've configured the VFD for RS485 ( I think) and I'm using a serial to RS485 converter that worked perfectly with my old VFD.

I tried alot of different settings in Modbusez (v16) setup. At best the fan starts in the vfd but nothing more.

Attached some pictures of the modbusez settings, a couple of pages from the manual and a pic from the serial communication from one of my tries.

Anyone who can help me? Have run out of ideas now.

Thanks

Latest update,

I now can adjust the speed with UCCNC BUT only for a few seconds then the vfd resumes its speed!!!???

Forgot to mention that its hooked up by analog port now...